[MINOR] Refactoring matrix block slice and append operations

Project: http://git-wip-us.apache.org/repos/asf/systemml/repo
Commit: http://git-wip-us.apache.org/repos/asf/systemml/commit/d16cc7cf
Tree: http://git-wip-us.apache.org/repos/asf/systemml/tree/d16cc7cf
Diff: http://git-wip-us.apache.org/repos/asf/systemml/diff/d16cc7cf

Branch: refs/heads/master
Commit: d16cc7cf89a790c1b9901650db1b9637024e5aed
Parents: ff8bb58
Author: Matthias Boehm <[email protected]>
Authored: Sun Feb 25 23:35:01 2018 -0800
Committer: Matthias Boehm <[email protected]>
Committed: Sun Feb 25 23:35:01 2018 -0800

----------------------------------------------------------------------
 .../hops/recompile/LiteralReplacement.java      |  2 +-
 .../runtime/compress/CompressedMatrixBlock.java | 34 ++++++++++----------
 .../controlprogram/caching/CacheBlock.java      |  2 +-
 .../controlprogram/caching/MatrixObject.java    |  4 +--
 .../context/SparkExecutionContext.java          |  4 +--
 .../parfor/DataPartitionerLocal.java            |  4 +--
 .../parfor/DataPartitionerRemoteMapper.java     |  4 +--
 .../DataPartitionerRemoteSparkMapper.java       |  4 +--
 .../cp/FrameAppendCPInstruction.java            |  2 +-
 .../cp/FrameIndexingCPInstruction.java          |  2 +-
 .../cp/MatrixAppendCPInstruction.java           |  2 +-
 .../cp/MatrixBuiltinNaryCPInstruction.java      |  2 +-
 .../cp/MatrixIndexingCPInstruction.java         |  2 +-
 .../instructions/mr/AppendGInstruction.java     |  8 ++---
 .../instructions/mr/AppendRInstruction.java     |  2 +-
 .../mr/CumulativeOffsetInstruction.java         |  2 +-
 .../mr/CumulativeSplitInstruction.java          |  2 +-
 .../spark/AppendGSPInstruction.java             |  8 ++---
 .../spark/BuiltinNarySPInstruction.java         |  4 +--
 .../spark/CumulativeOffsetSPInstruction.java    |  4 +--
 .../spark/FrameAppendMSPInstruction.java        |  2 +-
 .../spark/FrameAppendRSPInstruction.java        |  2 +-
 .../spark/FrameIndexingSPInstruction.java       |  6 ++--
 .../spark/MatrixAppendMSPInstruction.java       |  2 +-
 .../spark/MatrixAppendRSPInstruction.java       |  2 +-
 .../spark/MatrixIndexingSPInstruction.java      |  6 ++--
 .../instructions/spark/ReorgSPInstruction.java  |  4 +--
 .../spark/data/PartitionedBlock.java            |  4 +--
 .../spark/data/PartitionedBroadcast.java        |  4 +--
 .../spark/utils/FrameRDDConverterUtils.java     |  4 +--
 .../spark/utils/RDDConverterUtils.java          |  4 +--
 .../instructions/spark/utils/RDDSortUtils.java  |  8 ++---
 .../runtime/io/FrameWriterBinaryBlock.java      |  2 +-
 .../sysml/runtime/io/WriterBinaryBlock.java     |  8 ++---
 .../data/BinaryBlockToRowBlockConverter.java    |  2 +-
 .../sysml/runtime/matrix/data/CM_N_COVCell.java |  4 +--
 .../sysml/runtime/matrix/data/FrameBlock.java   | 10 +++---
 .../sysml/runtime/matrix/data/LibMatrixAgg.java |  2 +-
 .../runtime/matrix/data/LibMatrixReorg.java     | 12 +++----
 .../sysml/runtime/matrix/data/MatrixBlock.java  | 34 ++++++++++----------
 .../sysml/runtime/matrix/data/MatrixCell.java   |  4 +--
 .../sysml/runtime/matrix/data/MatrixValue.java  |  4 +--
 .../matrix/data/OperationsOnMatrixValues.java   | 12 +++----
 .../runtime/matrix/mapred/GMRCtableBuffer.java  |  2 +-
 .../matrix/mapred/GroupedAggMRMapper.java       |  4 +--
 .../sysml/runtime/util/DataConverter.java       |  2 +-
 .../codegen/CPlanVectorPrimitivesTest.java      |  8 ++---
 .../compress/BasicMatrixAppendTest.java         |  4 +--
 .../compress/BasicUnaryAggregateTest.java       |  2 +-
 .../compress/LargeParUnaryAggregateTest.java    |  2 +-
 .../compress/ParUnaryAggregateTest.java         |  2 +-
 .../functions/frame/FrameAppendTest.java        |  4 +--
 .../functions/frame/FrameIndexingTest.java      |  4 +--
 .../DataFrameVectorFrameConversionTest.java     |  2 +-
 .../mlcontext/DataFrameVectorScriptTest.java    |  2 +-
 55 files changed, 139 insertions(+), 139 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/hops/recompile/LiteralReplacement.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/hops/recompile/LiteralReplacement.java 
b/src/main/java/org/apache/sysml/hops/recompile/LiteralReplacement.java
index f0c8955..6c38740 100644
--- a/src/main/java/org/apache/sysml/hops/recompile/LiteralReplacement.java
+++ b/src/main/java/org/apache/sysml/hops/recompile/LiteralReplacement.java
@@ -348,7 +348,7 @@ public class LiteralReplacement
                                if( mo.getNumRows()*mo.getNumColumns() < 
REPLACE_LITERALS_MAX_MATRIX_SIZE )
                                {
                                        MatrixBlock mBlock = mo.acquireRead();
-                                       MatrixBlock mBlock2 = 
mBlock.sliceOperations((int)(rlval-1), (int)(ruval-1), (int)(clval-1), 
(int)(cuval-1), new MatrixBlock());
+                                       MatrixBlock mBlock2 = 
mBlock.slice((int)(rlval-1), (int)(ruval-1), (int)(clval-1), (int)(cuval-1), 
new MatrixBlock());
                                        double value = 
replaceUnaryAggregate((AggUnaryOp)c, mBlock2);
                                        mo.release();
                                                

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/compress/CompressedMatrixBlock.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/compress/CompressedMatrixBlock.java 
b/src/main/java/org/apache/sysml/runtime/compress/CompressedMatrixBlock.java
index c5fbd35..de99391 100644
--- a/src/main/java/org/apache/sysml/runtime/compress/CompressedMatrixBlock.java
+++ b/src/main/java/org/apache/sysml/runtime/compress/CompressedMatrixBlock.java
@@ -966,14 +966,14 @@ public class CompressedMatrixBlock extends MatrixBlock 
implements Externalizable
        }
 
        @Override
-       public MatrixBlock appendOperations(MatrixBlock that, MatrixBlock ret) 
+       public MatrixBlock append(MatrixBlock that, MatrixBlock ret) 
                throws DMLRuntimeException
        {
                //call uncompressed matrix append if necessary
                if( !isCompressed() ) {
                        if( that instanceof CompressedMatrixBlock )
                                that = ((CompressedMatrixBlock) 
that).decompress();
-                       return super.appendOperations(that, ret, true);
+                       return super.append(that, ret, true);
                }
                
                final int m = rlen;
@@ -1154,7 +1154,7 @@ public class CompressedMatrixBlock extends MatrixBlock 
implements Externalizable
                        MatrixBlock tmpOut = new MatrixBlock(right?rl:1, 
right?1:cl, false).allocateBlock();
                        if( right ) { //MM right
                                for(int i=0; i<that.getNumRows(); i++) { //on 
transpose
-                                       tmpIn = that.sliceOperations(i, i, 0, 
that.getNumColumns()-1, tmpIn);
+                                       tmpIn = that.slice(i, i, 0, 
that.getNumColumns()-1, tmpIn);
                                        MatrixBlock tmpIn2 = 
LibMatrixReorg.transpose(tmpIn, //meta data op
                                                new 
MatrixBlock(tmpIn.getNumColumns(), tmpIn.getNumRows(), false));
                                        tmpOut.reset(tmpOut.getNumRows(), 
tmpOut.getNumColumns());
@@ -1167,7 +1167,7 @@ public class CompressedMatrixBlock extends MatrixBlock 
implements Externalizable
                        }
                        else { // MM left
                                for(int i=0; i<that.getNumRows(); i++) {
-                                       tmpIn = that.sliceOperations(i, i, 0, 
that.getNumColumns()-1, tmpIn);
+                                       tmpIn = that.slice(i, i, 0, 
that.getNumColumns()-1, tmpIn);
                                        if( op.getNumThreads()>1 )
                                                
leftMultByVectorTranspose(_colGroups, tmpIn, tmpOut, false, op.getNumThreads());
                                        else
@@ -2006,25 +2006,25 @@ public class CompressedMatrixBlock extends MatrixBlock 
implements Externalizable
        }
 
        @Override
-       public MatrixBlock appendOperations(MatrixBlock that, MatrixBlock ret, 
boolean cbind) 
+       public MatrixBlock append(MatrixBlock that, MatrixBlock ret, boolean 
cbind) 
                throws DMLRuntimeException {
                if( cbind ) //use supported operation
-                       return appendOperations(that, ret);                     
-               printDecompressWarning("appendOperations-rbind", that);
+                       return append(that, ret);                       
+               printDecompressWarning("append-rbind", that);
                MatrixBlock left = isCompressed() ? decompress() : this;
                MatrixBlock right = getUncompressed(that);
-               return left.appendOperations(right, ret, cbind);
+               return left.append(right, ret, cbind);
        }
        
        @Override
-       public void appendOperations(MatrixValue v2,
+       public void append(MatrixValue v2,
                        ArrayList<IndexedMatrixValue> outlist, int 
blockRowFactor,
                        int blockColFactor, boolean cbind, boolean m2IsLast, 
int nextNCol)
                        throws DMLRuntimeException {
-               printDecompressWarning("appendOperations", (MatrixBlock)v2);
+               printDecompressWarning("append", (MatrixBlock)v2);
                MatrixBlock left = isCompressed() ? decompress() : this;
                MatrixBlock right = getUncompressed(v2);
-               left.appendOperations(right, outlist, blockRowFactor, 
blockColFactor, cbind, m2IsLast, nextNCol);
+               left.append(right, outlist, blockRowFactor, blockColFactor, 
cbind, m2IsLast, nextNCol);
        }
 
        @Override
@@ -2060,21 +2060,21 @@ public class CompressedMatrixBlock extends MatrixBlock 
implements Externalizable
        }
 
        @Override
-       public MatrixBlock sliceOperations(int rl, int ru, int cl, int cu, 
CacheBlock ret) 
+       public MatrixBlock slice(int rl, int ru, int cl, int cu, CacheBlock 
ret) 
                        throws DMLRuntimeException {
-               printDecompressWarning("sliceOperations");
+               printDecompressWarning("slice");
                MatrixBlock tmp = isCompressed() ? decompress() : this;
-               return tmp.sliceOperations(rl, ru, cl, cu, ret);
+               return tmp.slice(rl, ru, cl, cu, ret);
        }
 
        @Override
-       public void sliceOperations(ArrayList<IndexedMatrixValue> outlist, 
IndexRange range, 
+       public void slice(ArrayList<IndexedMatrixValue> outlist, IndexRange 
range, 
                        int rowCut, int colCut, int normalBlockRowFactor,
                        int normalBlockColFactor, int boundaryRlen, int 
boundaryClen) {
-               printDecompressWarning("sliceOperations");
+               printDecompressWarning("slice");
                try {
                        MatrixBlock tmp = isCompressed() ? decompress() : this;
-                       tmp.sliceOperations(outlist, range, rowCut, colCut, 
normalBlockRowFactor,
+                       tmp.slice(outlist, range, rowCut, colCut, 
normalBlockRowFactor,
                                        normalBlockColFactor, boundaryRlen, 
boundaryClen);
                }
                catch(DMLRuntimeException ex) {

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/controlprogram/caching/CacheBlock.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/controlprogram/caching/CacheBlock.java 
b/src/main/java/org/apache/sysml/runtime/controlprogram/caching/CacheBlock.java
index bd03ead..14e1e02 100644
--- 
a/src/main/java/org/apache/sysml/runtime/controlprogram/caching/CacheBlock.java
+++ 
b/src/main/java/org/apache/sysml/runtime/controlprogram/caching/CacheBlock.java
@@ -95,7 +95,7 @@ public interface CacheBlock extends Writable
         * @return sub-block of cache block
         * @throws DMLRuntimeException if DMLRuntimeException occurs
         */
-       public CacheBlock sliceOperations(int rl, int ru, int cl, int cu, 
CacheBlock block) 
+       public CacheBlock slice(int rl, int ru, int cl, int cu, CacheBlock 
block) 
                throws DMLRuntimeException;
        
        /**

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/controlprogram/caching/MatrixObject.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/controlprogram/caching/MatrixObject.java
 
b/src/main/java/org/apache/sysml/runtime/controlprogram/caching/MatrixObject.java
index 0aaca69..e744ecb 100644
--- 
a/src/main/java/org/apache/sysml/runtime/controlprogram/caching/MatrixObject.java
+++ 
b/src/main/java/org/apache/sysml/runtime/controlprogram/caching/MatrixObject.java
@@ -326,12 +326,12 @@ public class MatrixObject extends 
CacheableData<MatrixBlock>
                                if( _partitionFormat == 
PDataPartitionFormat.ROW_BLOCK_WISE )
                                {
                                        int rix = 
(int)((pred.rowStart-1)%brlen);
-                                       mb = mb.sliceOperations(rix, rix, 
(int)(pred.colStart-1), (int)(pred.colEnd-1), new MatrixBlock());
+                                       mb = mb.slice(rix, rix, 
(int)(pred.colStart-1), (int)(pred.colEnd-1), new MatrixBlock());
                                }
                                if( _partitionFormat == 
PDataPartitionFormat.COLUMN_BLOCK_WISE )
                                {
                                        int cix = 
(int)((pred.colStart-1)%bclen);
-                                       mb = 
mb.sliceOperations((int)(pred.rowStart-1), (int)(pred.rowEnd-1), cix, cix, new 
MatrixBlock());
+                                       mb = mb.slice((int)(pred.rowStart-1), 
(int)(pred.rowEnd-1), cix, cix, new MatrixBlock());
                                }
                        }
                        

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/controlprogram/context/SparkExecutionContext.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/controlprogram/context/SparkExecutionContext.java
 
b/src/main/java/org/apache/sysml/runtime/controlprogram/context/SparkExecutionContext.java
index 098eb37..a76b39b 100644
--- 
a/src/main/java/org/apache/sysml/runtime/controlprogram/context/SparkExecutionContext.java
+++ 
b/src/main/java/org/apache/sysml/runtime/controlprogram/context/SparkExecutionContext.java
@@ -707,7 +707,7 @@ public class SparkExecutionContext extends ExecutionContext
                                        int col_offset = blockCol*bclen;
 
                                        //copy submatrix to block
-                                       src.sliceOperations( row_offset, 
row_offset+maxRow-1,
+                                       src.slice( row_offset, 
row_offset+maxRow-1,
                                                                     
col_offset, col_offset+maxCol-1, block );
 
                                        //append block to sequence file
@@ -741,7 +741,7 @@ public class SparkExecutionContext extends ExecutionContext
                        FrameBlock block = new FrameBlock(src.getSchema());
 
                        //copy sub frame to block, incl meta data on first
-                       src.sliceOperations( roffset, roffset+maxRow-1, 0, 
src.getNumColumns()-1, block );
+                       src.slice( roffset, roffset+maxRow-1, 0, 
src.getNumColumns()-1, block );
                        if( roffset == 0 )
                                
block.setColumnMetadata(src.getColumnMetadata());
 

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerLocal.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerLocal.java
 
b/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerLocal.java
index c54e5e9..cdb5d4d 100644
--- 
a/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerLocal.java
+++ 
b/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerLocal.java
@@ -511,7 +511,7 @@ public class DataPartitionerLocal extends DataPartitioner
                        {
                                String pdir = 
LocalFileUtils.checkAndCreateStagingDir(dir+"/"+(row_offset+1+i));
                                String pfname = 
pdir+"/"+"block_"+(col_offset/bclen+1);
-                               mb.sliceOperations(i, i, 0, (int)(cols-1), 
_reuseBlk);
+                               mb.slice(i, i, 0, (int)(cols-1), _reuseBlk);
                                LocalFileUtils.writeMatrixBlockToLocal(pfname, 
_reuseBlk);
                                _reuseBlk.reset();
                        }
@@ -531,7 +531,7 @@ public class DataPartitionerLocal extends DataPartitioner
                        {
                                String pdir = 
LocalFileUtils.checkAndCreateStagingDir(dir+"/"+(col_offset+1+i));
                                String pfname = 
pdir+"/"+"block_"+(row_offset/brlen+1);                         
-                               mb.sliceOperations(0, (int)(rows-1), i, i, 
_reuseBlk);
+                               mb.slice(0, (int)(rows-1), i, i, _reuseBlk);
                                LocalFileUtils.writeMatrixBlockToLocal(pfname, 
_reuseBlk);
                                _reuseBlk.reset();
                        }                               

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerRemoteMapper.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerRemoteMapper.java
 
b/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerRemoteMapper.java
index e26201e..f535b32 100644
--- 
a/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerRemoteMapper.java
+++ 
b/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerRemoteMapper.java
@@ -340,7 +340,7 @@ public class DataPartitionerRemoteMapper
                                                {
                                                        
_longKey.set(row_offset+1+i);
                                                        _pairKey.setIndexes(1, 
(col_offset/_bclen+1) ); 
-                                                       
value2.sliceOperations(i, i, 0, (int)(cols-1), _reuseBlk);
+                                                       value2.slice(i, i, 0, 
(int)(cols-1), _reuseBlk);
                                                        out.collect(_longKey, 
_pair);
                                                        _reuseBlk.reset();
                                                }
@@ -366,7 +366,7 @@ public class DataPartitionerRemoteMapper
                                                {
                                                        
_longKey.set(col_offset+1+i);
                                                        
_pairKey.setIndexes(row_offset/_brlen+1, 1);                                    
                
-                                                       
value2.sliceOperations(0, (int)(rows-1), i, i, _reuseBlk);
+                                                       value2.slice(0, 
(int)(rows-1), i, i, _reuseBlk);
                                                        out.collect(_longKey, 
_pair );
                                                        _reuseBlk.reset();
                                                }       

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerRemoteSparkMapper.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerRemoteSparkMapper.java
 
b/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerRemoteSparkMapper.java
index 89456dc..ab14ca3 100644
--- 
a/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerRemoteSparkMapper.java
+++ 
b/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/DataPartitionerRemoteSparkMapper.java
@@ -119,7 +119,7 @@ public class DataPartitionerRemoteSparkMapper extends 
ParWorker implements PairF
                                        for( int i=0; i<rows; i+=_n ) {
                                                PairWritableBlock tmp = new 
PairWritableBlock();
                                                tmp.indexes = new 
MatrixIndexes(1, col_offset/_bclen+1);
-                                               tmp.block = 
value2.sliceOperations(i, Math.min(i+(int)_n-1, value2.getNumRows()-1), 
+                                               tmp.block = value2.slice(i, 
Math.min(i+(int)_n-1, value2.getNumRows()-1), 
                                                                0, 
value2.getNumColumns()-1, new MatrixBlock());
                                                ret.add(new 
Tuple2<Long,Writable>(new Long((row_offset+i)/_n+1),tmp));
                                        }
@@ -154,7 +154,7 @@ public class DataPartitionerRemoteSparkMapper extends 
ParWorker implements PairF
                                        for( int i=0; i<cols; i+=_n ) {
                                                PairWritableBlock tmp = new 
PairWritableBlock();
                                                tmp.indexes = new 
MatrixIndexes(row_offset/_brlen+1, 1);
-                                               tmp.block = 
value2.sliceOperations(0, value2.getNumRows()-1, 
+                                               tmp.block = value2.slice(0, 
value2.getNumRows()-1, 
                                                                i, 
Math.min(i+(int)_n-1, value2.getNumColumns()-1), new MatrixBlock());
                                                ret.add(new 
Tuple2<Long,Writable>(new Long((col_offset+i)/_n+1),tmp));
                                        }

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/cp/FrameAppendCPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/cp/FrameAppendCPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/cp/FrameAppendCPInstruction.java
index e194c87..255dfd0 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/cp/FrameAppendCPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/cp/FrameAppendCPInstruction.java
@@ -50,7 +50,7 @@ public final class FrameAppendCPInstruction extends 
AppendCPInstruction {
                } 
                        
                //execute append operations (append both inputs to initially 
empty output)
-               FrameBlock ret = fin1.appendOperations(fin2, new FrameBlock(), 
_type==AppendType.CBIND);
+               FrameBlock ret = fin1.append(fin2, new FrameBlock(), 
_type==AppendType.CBIND);
                
                //set output and release inputs 
                ec.setFrameOutput(output.getName(), ret);

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/cp/FrameIndexingCPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/cp/FrameIndexingCPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/cp/FrameIndexingCPInstruction.java
index d585148..967b168 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/cp/FrameIndexingCPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/cp/FrameIndexingCPInstruction.java
@@ -52,7 +52,7 @@ public final class FrameIndexingCPInstruction extends 
IndexingCPInstruction {
                {
                        //execute right indexing operation
                        FrameBlock in = ec.getFrameInput(input1.getName());
-                       FrameBlock out = in.sliceOperations(ixrange, new 
FrameBlock()); 
+                       FrameBlock out = in.slice(ixrange, new FrameBlock());   
                                
                        //unpin rhs input
                        ec.releaseFrameInput(input1.getName());

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixAppendCPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixAppendCPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixAppendCPInstruction.java
index 28f9b6b..420535b 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixAppendCPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixAppendCPInstruction.java
@@ -50,7 +50,7 @@ public final class MatrixAppendCPInstruction extends 
AppendCPInstruction {
                } 
                        
                //execute append operations (append both inputs to initially 
empty output)
-               MatrixBlock ret = matBlock1.appendOperations(matBlock2, new 
MatrixBlock(), _type==AppendType.CBIND);
+               MatrixBlock ret = matBlock1.append(matBlock2, new 
MatrixBlock(), _type==AppendType.CBIND);
                
                //set output and release inputs 
                ec.setMatrixOutput(output.getName(), ret, getExtendedOpcode());

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixBuiltinNaryCPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixBuiltinNaryCPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixBuiltinNaryCPInstruction.java
index c3c04b4..4e4fb95 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixBuiltinNaryCPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixBuiltinNaryCPInstruction.java
@@ -41,7 +41,7 @@ public class MatrixBuiltinNaryCPInstruction extends 
BuiltinNaryCPInstruction {
                MatrixBlock outBlock = null;
                if( "cbind".equals(getOpcode()) || "rbind".equals(getOpcode()) 
) {
                        boolean cbind = "cbind".equals(getOpcode());
-                       outBlock = in1.appendOperations(in2, new MatrixBlock(), 
cbind);
+                       outBlock = in1.append(in2, new MatrixBlock(), cbind);
                }
                else {
                        throw new DMLRuntimeException("Unknown opcode: 
"+getOpcode());

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixIndexingCPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixIndexingCPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixIndexingCPInstruction.java
index 73f7f72..2eeade3 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixIndexingCPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/cp/MatrixIndexingCPInstruction.java
@@ -67,7 +67,7 @@ public final class MatrixIndexingCPInstruction extends 
IndexingCPInstruction {
                                //execute right indexing operation (with 
shallow row copies for range
                                //of entire sparse rows, which is safe due to 
copy on update)
                                MatrixBlock matBlock = 
ec.getMatrixInput(input1.getName(), getExtendedOpcode());
-                               resultBlock = 
matBlock.sliceOperations((int)ixrange.rowStart, (int)ixrange.rowEnd, 
+                               resultBlock = 
matBlock.slice((int)ixrange.rowStart, (int)ixrange.rowEnd, 
                                        (int)ixrange.colStart, 
(int)ixrange.colEnd, false, new MatrixBlock());
                                
                                //unpin rhs input

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/mr/AppendGInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/mr/AppendGInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/mr/AppendGInstruction.java
index 8c84563..ea39010 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/mr/AppendGInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/mr/AppendGInstruction.java
@@ -135,7 +135,7 @@ public class AppendGInstruction extends AppendInstruction {
                                                ix1.setIndexes( 
tmpix.getRowIndex(), cix1);
                                                tmpvalNew.reset( 
tmpval.getNumRows(), cols1 );
                                                tmpvalNew.copy(0, 
tmpval.getNumRows()-1, (int)((_offset+1)%blen)-1, cols1-1, 
-                                                                      
tmpval.sliceOperations(0, tmpval.getNumRows()-1, 0, 
+                                                                      
tmpval.slice(0, tmpval.getNumRows()-1, 0, 
                                                                                
                     (int)(cols1-((_offset)%blen)-1), new MatrixBlock()), true);
                                                
data1.getIndexes().setIndexes(ix1);
                                                
@@ -150,7 +150,7 @@ public class AppendGInstruction extends AppendInstruction {
                                                        ix2.setIndexes( 
tmpix.getRowIndex(), cix2);
                                                        tmpvalNew2.reset( 
tmpval.getNumRows(), cols2 );
                                                        tmpvalNew2.copy(0, 
tmpval.getNumRows()-1, 0, cols2-1, 
-                                                                              
tmpval.sliceOperations(0, tmpval.getNumRows()-1, (int)(cols1-((_offset)%blen)), 
+                                                                              
tmpval.slice(0, tmpval.getNumRows()-1, (int)(cols1-((_offset)%blen)), 
                                                                                
                             tmpval.getNumColumns()-1, new MatrixBlock()), 
true);
                                                        
data2.getIndexes().setIndexes(ix2);
                                                }       
@@ -163,7 +163,7 @@ public class AppendGInstruction extends AppendInstruction {
                                                ix1.setIndexes( rix1, 
tmpix.getColumnIndex());
                                                tmpvalNew.reset( rows1, 
tmpval.getNumColumns() );
                                                
tmpvalNew.copy((int)((_offset+1)%blen)-1, rows1-1, 0, tmpval.getNumColumns()-1, 
 
-                                                                      
tmpval.sliceOperations(0,(int)(rows1-((_offset)%blen)-1), 
+                                                                      
tmpval.slice(0,(int)(rows1-((_offset)%blen)-1), 
                                                                                
   0, tmpval.getNumColumns()-1, new MatrixBlock()), true);
                                                
data1.getIndexes().setIndexes(ix1);
                                                
@@ -178,7 +178,7 @@ public class AppendGInstruction extends AppendInstruction {
                                                        ix2.setIndexes(rix2, 
tmpix.getColumnIndex());
                                                        tmpvalNew2.reset( 
rows2, tmpval.getNumColumns() );
                                                        tmpvalNew2.copy(0, 
rows2-1, 0, tmpval.getNumColumns()-1,  
-                                                                              
tmpval.sliceOperations((int)(rows1-((_offset)%blen)), tmpval.getNumRows()-1, 
+                                                                              
tmpval.slice((int)(rows1-((_offset)%blen)), tmpval.getNumRows()-1, 
                                                                                
           0, tmpval.getNumColumns()-1, new MatrixBlock()), true);
                                                        
data2.getIndexes().setIndexes(ix2);
                                                }       

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/mr/AppendRInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/mr/AppendRInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/mr/AppendRInstruction.java
index d3847a5..32e61e2 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/mr/AppendRInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/mr/AppendRInstruction.java
@@ -63,7 +63,7 @@ public class AppendRInstruction extends AppendInstruction {
                MatrixBlock mbLeft = (MatrixBlock)left.getValue();
                MatrixBlock mbRight = (MatrixBlock)right.getValue();
                
-               MatrixBlock ret = mbLeft.appendOperations(mbRight, new 
MatrixBlock(), _cbind);
+               MatrixBlock ret = mbLeft.append(mbRight, new MatrixBlock(), 
_cbind);
                
                //put result into cache
                cachedValues.add(output, new 
IndexedMatrixValue(left.getIndexes(), ret));

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/mr/CumulativeOffsetInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/mr/CumulativeOffsetInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/mr/CumulativeOffsetInstruction.java
index e01be29..fadea8d 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/mr/CumulativeOffsetInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/mr/CumulativeOffsetInstruction.java
@@ -89,7 +89,7 @@ public class CumulativeOffsetInstruction extends 
BinaryInstruction {
                
                //blockwise offset aggregation and prefix sum computation
                MatrixBlock data2 = new MatrixBlock(data); //cp data
-               MatrixBlock fdata2 = data2.sliceOperations(0, 0, 0, 
data2.getNumColumns()-1, new MatrixBlock()); //1-based
+               MatrixBlock fdata2 = data2.slice(0, 0, 0, 
data2.getNumColumns()-1, new MatrixBlock()); //1-based
                fdata2.binaryOperationsInPlace(_bop, offset); //sum offset to 
first row
                data2.copy(0, 0, 0, data2.getNumColumns()-1, fdata2, true); 
//0-based
                data2.unaryOperations(_uop, blk); //compute columnwise prefix 
sums/prod/min/max

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/mr/CumulativeSplitInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/mr/CumulativeSplitInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/mr/CumulativeSplitInstruction.java
index 0ff3298..bc21b47 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/mr/CumulativeSplitInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/mr/CumulativeSplitInstruction.java
@@ -97,7 +97,7 @@ public class CumulativeSplitInstruction extends 
UnaryInstruction {
                                        IndexedMatrixValue out = 
cachedValues.holdPlace(output, valueClass);
                                        MatrixBlock tmpBlk = (MatrixBlock) 
out.getValue();
                                        tmpBlk.reset(1,blk.getNumColumns());
-                                       blk.sliceOperations(i, i, 0, 
blk.getNumColumns()-1, tmpBlk);    
+                                       blk.slice(i, i, 0, 
blk.getNumColumns()-1, tmpBlk);      
                                        
out.getIndexes().setIndexes(rixOffset+i+2, inix.getColumnIndex());
                                }
                }

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/AppendGSPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/AppendGSPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/AppendGSPInstruction.java
index f50ae9c..3f28f3f 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/AppendGSPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/AppendGSPInstruction.java
@@ -197,11 +197,11 @@ public class AppendGSPInstruction extends 
BinarySPInstruction {
                                }
                                else {
                                        // Since merge requires the dimensions 
matching, shifting = slicing + left indexing
-                                       MatrixBlock firstSlicedBlk = 
in.sliceOperations(0, in.getNumRows()-1, 0, cutAt-1, new MatrixBlock());
+                                       MatrixBlock firstSlicedBlk = 
in.slice(0, in.getNumRows()-1, 0, cutAt-1, new MatrixBlock());
                                        MatrixBlock firstBlk = new 
MatrixBlock(in.getNumRows(), lblen1, true);
                                        firstBlk = 
firstBlk.leftIndexingOperations(firstSlicedBlk, 0, in.getNumRows()-1, _shiftBy, 
_blen-1, new MatrixBlock(), UpdateType.INPLACE_PINNED);
                                        
-                                       MatrixBlock secondSlicedBlk = 
in.sliceOperations(0, in.getNumRows()-1, cutAt, in.getNumColumns()-1, new 
MatrixBlock());
+                                       MatrixBlock secondSlicedBlk = 
in.slice(0, in.getNumRows()-1, cutAt, in.getNumColumns()-1, new MatrixBlock());
                                        int llen2 = 
UtilFunctions.computeBlockSize(_outlen, secondIndex.getColumnIndex(), _blen);
                                        MatrixBlock secondBlk = new 
MatrixBlock(in.getNumRows(), llen2, true);
                                        secondBlk = 
secondBlk.leftIndexingOperations(secondSlicedBlk, 0, in.getNumRows()-1, 0, 
secondSlicedBlk.getNumColumns()-1, new MatrixBlock(), 
UpdateType.INPLACE_PINNED);
@@ -223,11 +223,11 @@ public class AppendGSPInstruction extends 
BinarySPInstruction {
                                }
                                else {
                                        // Since merge requires the dimensions 
matching, shifting = slicing + left indexing
-                                       MatrixBlock firstSlicedBlk = 
in.sliceOperations(0, cutAt-1, 0, in.getNumColumns()-1, new MatrixBlock());
+                                       MatrixBlock firstSlicedBlk = 
in.slice(0, cutAt-1, 0, in.getNumColumns()-1, new MatrixBlock());
                                        MatrixBlock firstBlk = new 
MatrixBlock(lblen1, in.getNumColumns(), true);
                                        firstBlk = 
firstBlk.leftIndexingOperations(firstSlicedBlk, _shiftBy, _blen-1, 0, 
in.getNumColumns()-1, new MatrixBlock(), UpdateType.INPLACE_PINNED);
                                        
-                                       MatrixBlock secondSlicedBlk = 
in.sliceOperations(cutAt, in.getNumRows()-1, 0, in.getNumColumns()-1, new 
MatrixBlock());
+                                       MatrixBlock secondSlicedBlk = 
in.slice(cutAt, in.getNumRows()-1, 0, in.getNumColumns()-1, new MatrixBlock());
                                        int lblen2 = 
UtilFunctions.computeBlockSize(_outlen, secondIndex.getRowIndex(), _blen);
                                        MatrixBlock secondBlk = new 
MatrixBlock(lblen2, in.getNumColumns(), true);
                                        secondBlk = 
secondBlk.leftIndexingOperations(secondSlicedBlk, 0, 
secondSlicedBlk.getNumRows()-1, 0, in.getNumColumns()-1, new MatrixBlock(), 
UpdateType.INPLACE_PINNED);

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/BuiltinNarySPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/BuiltinNarySPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/BuiltinNarySPInstruction.java
index cc96cd9..ea09a67 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/BuiltinNarySPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/BuiltinNarySPInstruction.java
@@ -136,9 +136,9 @@ public class BuiltinNarySPInstruction extends SPInstruction
                        
                        //cbind or rbind to pad to right blocksize
                        if( brlen > mb.getNumRows() ) //rbind
-                               mb = mb.appendOperations(new 
MatrixBlock(brlen-mb.getNumRows(),bclen,true), new MatrixBlock(), false);
+                               mb = mb.append(new 
MatrixBlock(brlen-mb.getNumRows(),bclen,true), new MatrixBlock(), false);
                        else if( bclen > mb.getNumColumns() ) //cbind
-                               mb = mb.appendOperations(new 
MatrixBlock(brlen,bclen-mb.getNumColumns(),true), new MatrixBlock(), true);
+                               mb = mb.append(new 
MatrixBlock(brlen,bclen-mb.getNumColumns(),true), new MatrixBlock(), true);
                        return new Tuple2<>(ix, mb);
                }
        }

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/CumulativeOffsetSPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/CumulativeOffsetSPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/CumulativeOffsetSPInstruction.java
index 88fb5ae..cbe6282 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/CumulativeOffsetSPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/CumulativeOffsetSPInstruction.java
@@ -156,7 +156,7 @@ public class CumulativeOffsetSPInstruction extends 
BinarySPInstruction {
                                {
                                        MatrixIndexes tmpix = new 
MatrixIndexes(rixOffset+i+2, ixIn.getColumnIndex());
                                        MatrixBlock tmpblk = new MatrixBlock(1, 
blkIn.getNumColumns(), blkIn.isInSparseFormat());
-                                       blkIn.sliceOperations(i, i, 0, 
blkIn.getNumColumns()-1, tmpblk);        
+                                       blkIn.slice(i, i, 0, 
blkIn.getNumColumns()-1, tmpblk);  
                                        ret.add(new Tuple2<>(tmpix, tmpblk));
                                }
                        
@@ -188,7 +188,7 @@ public class CumulativeOffsetSPInstruction extends 
BinarySPInstruction {
                        
                        //blockwise offset aggregation and prefix sum 
computation
                        MatrixBlock data2 = new MatrixBlock(dblkIn); //cp data
-                       MatrixBlock fdata2 = data2.sliceOperations(0, 0, 0, 
data2.getNumColumns()-1, new MatrixBlock()); //1-based
+                       MatrixBlock fdata2 = data2.slice(0, 0, 0, 
data2.getNumColumns()-1, new MatrixBlock()); //1-based
                        fdata2.binaryOperationsInPlace(_bop, oblkIn); //sum 
offset to first row
                        data2.copy(0, 0, 0, data2.getNumColumns()-1, fdata2, 
true); //0-based
                        data2.unaryOperations(_uop, blkOut); //compute 
columnwise prefix sums/prod/min/max

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameAppendMSPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameAppendMSPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameAppendMSPInstruction.java
index 3f95e8c..081db1f 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameAppendMSPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameAppendMSPInstruction.java
@@ -121,7 +121,7 @@ public class FrameAppendMSPInstruction extends 
AppendMSPInstruction {
                                int colix = 1;
                                
                                FrameBlock in2 = _pm.getBlock(rowix, colix);
-                               FrameBlock out = in1.appendOperations(in2, new 
FrameBlock(), true); //cbind
+                               FrameBlock out = in1.append(in2, new 
FrameBlock(), true); //cbind
                                return new Tuple2<>(ix, out);
                        }                       
                }

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameAppendRSPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameAppendRSPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameAppendRSPInstruction.java
index b386669..eca944f 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameAppendRSPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameAppendRSPInstruction.java
@@ -92,7 +92,7 @@ public class FrameAppendRSPInstruction extends 
AppendRSPInstruction {
                        FrameBlock left = arg0._1();
                        FrameBlock right = arg0._2();
                        
-                       return left.appendOperations(right, new FrameBlock(), 
_cbind);
+                       return left.append(right, new FrameBlock(), _cbind);
                }
        }
 

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameIndexingSPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameIndexingSPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameIndexingSPInstruction.java
index 2daaad5..0f338d7 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameIndexingSPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/FrameIndexingSPInstruction.java
@@ -321,7 +321,7 @@ public class FrameIndexingSPInstruction extends 
IndexingSPInstruction {
                                long rhs_ru_pb = Math.min(rhs_ru, 
(((rhs_rl-1)/brlen)+1)*brlen); 
                                while(rhs_rl_pb <= rhs_ru_pb) {
                                        // Provide global zero-based index to 
sliceOperations, but only for one RHS partition block at a time.
-                                       FrameBlock slicedRHSMatBlock = 
_binput.sliceOperations(rhs_rl_pb, rhs_ru_pb, rhs_cl, rhs_cu, new FrameBlock());
+                                       FrameBlock slicedRHSMatBlock = 
_binput.slice(rhs_rl_pb, rhs_ru_pb, rhs_cl, rhs_cu, new FrameBlock());
                                        
                                        // Provide local zero-based index to 
leftIndexingOperations
                                        int lhs_lrl_pb = (int) (lhs_lrl + 
(rhs_rl_pb - rhs_rl));
@@ -359,7 +359,7 @@ public class FrameIndexingSPInstruction extends 
IndexingSPInstruction {
                                        in.getNumRows()-1 : 
_ixrange.rowEnd-rowindex);
                        
                        //slice out the block
-                       FrameBlock out = in.sliceOperations(rl, ru, 
(int)(_ixrange.colStart-1), 
+                       FrameBlock out = in.slice(rl, ru, 
(int)(_ixrange.colStart-1), 
                                        (int)(_ixrange.colEnd-1), new 
FrameBlock());
                        
                        //return block with shifted row index
@@ -403,7 +403,7 @@ public class FrameIndexingSPInstruction extends 
IndexingSPInstruction {
                                FrameBlock in = arg._2();
                                
                                //slice out the block
-                               FrameBlock out = in.sliceOperations(0, 
in.getNumRows()-1, 
+                               FrameBlock out = in.slice(0, in.getNumRows()-1, 
                                                (int)_ixrange.colStart-1, 
(int)_ixrange.colEnd-1, new FrameBlock());
                                
                                //return block with shifted row index

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixAppendMSPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixAppendMSPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixAppendMSPInstruction.java
index eb04947..8ada4e8 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixAppendMSPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixAppendMSPInstruction.java
@@ -234,7 +234,7 @@ public class MatrixAppendMSPInstruction extends 
AppendMSPInstruction {
                                        int rowix = _cbind ? 
(int)ix.getRowIndex() : 1;
                                        int colix = _cbind ? 1 : 
(int)ix.getColumnIndex();
                                        MatrixBlock in2 = _pm.getBlock(rowix, 
colix);
-                                       MatrixBlock out = 
in1.appendOperations(in2, new MatrixBlock(), _cbind);
+                                       MatrixBlock out = in1.append(in2, new 
MatrixBlock(), _cbind);
                                        return new Tuple2<>(ix, out);
                                }
                        }

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixAppendRSPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixAppendRSPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixAppendRSPInstruction.java
index aba212e..efe4f9d 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixAppendRSPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixAppendRSPInstruction.java
@@ -76,7 +76,7 @@ public class MatrixAppendRSPInstruction extends 
AppendRSPInstruction {
                public MatrixBlock call(Tuple2<MatrixBlock, MatrixBlock> arg0)
                        throws Exception 
                {
-                       return arg0._1().appendOperations(arg0._2(), new 
MatrixBlock(), _cbind);
+                       return arg0._1().append(arg0._2(), new MatrixBlock(), 
_cbind);
                }
        }
 }

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixIndexingSPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixIndexingSPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixIndexingSPInstruction.java
index dd7f2bd..78486cb 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixIndexingSPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/MatrixIndexingSPInstruction.java
@@ -223,7 +223,7 @@ public class MatrixIndexingSPInstruction extends 
IndexingSPInstruction {
                
                MatrixBlock tmp = list.get(0);
                MatrixBlock mbout = (tmp.getNumRows()==mcOut.getRows() && 
tmp.getNumColumns()==mcOut.getCols()) ? 
-                               tmp : tmp.sliceOperations( //reference full 
block or slice out sub-block
+                               tmp : tmp.slice( //reference full block or 
slice out sub-block
                                
UtilFunctions.computeCellInBlock(ixrange.rowStart, mcIn.getRowsPerBlock()), 
                                
UtilFunctions.computeCellInBlock(ixrange.rowEnd, mcIn.getRowsPerBlock()), 
                                
UtilFunctions.computeCellInBlock(ixrange.colStart, mcIn.getColsPerBlock()), 
@@ -438,7 +438,7 @@ public class MatrixIndexingSPInstruction extends 
IndexingSPInstruction {
                                        long rhs_cu = rhs_cl + (lhs_cu - 
lhs_cl);
                                        
                                        // Provide global zero-based index to 
sliceOperations
-                                       MatrixBlock slicedRHSMatBlock = 
_binput.sliceOperations(rhs_rl, rhs_ru, rhs_cl, rhs_cu, new MatrixBlock());
+                                       MatrixBlock slicedRHSMatBlock = 
_binput.slice(rhs_rl, rhs_ru, rhs_cl, rhs_cu, new MatrixBlock());
                                        
                                        // Provide local zero-based index to 
leftIndexingOperations
                                        int lhs_lrl = 
UtilFunctions.computeCellInBlock(lhs_rl, _brlen);
@@ -494,7 +494,7 @@ public class MatrixIndexingSPInstruction extends 
IndexingSPInstruction {
                        }
                        else {
                                return new Tuple2<>(ixOut, 
-                                       block.sliceOperations(lrl, lru, lcl, 
lcu, new MatrixBlock()));
+                                       block.slice(lrl, lru, lcl, lcu, new 
MatrixBlock()));
                        }
                }               
        }

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/ReorgSPInstruction.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/ReorgSPInstruction.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/ReorgSPInstruction.java
index 5d85ae4..79d791d 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/ReorgSPInstruction.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/ReorgSPInstruction.java
@@ -335,7 +335,7 @@ public class ReorgSPInstruction extends UnarySPInstruction {
                public MatrixBlock call(MatrixBlock arg0) 
                        throws Exception 
                {
-                       return arg0.sliceOperations(0, arg0.getNumRows()-1, 
_col, _col, new MatrixBlock());
+                       return arg0.slice(0, arg0.getNumRows()-1, _col, _col, 
new MatrixBlock());
                }
        }
        
@@ -361,7 +361,7 @@ public class ReorgSPInstruction extends UnarySPInstruction {
                        for(int i=0; i<_cols.length; i++)
                                if( UtilFunctions.isInBlockRange(ix, _brlen, 
_bclen, new IndexRange(1, Long.MAX_VALUE, _cols[i], _cols[i])) ) {
                                        int index = 
UtilFunctions.computeCellInBlock(_cols[i], _bclen);
-                                       
out.leftIndexingOperations(in.sliceOperations(0, in.getNumRows()-1, index, 
index, new MatrixBlock()),
+                                       out.leftIndexingOperations(in.slice(0, 
in.getNumRows()-1, index, index, new MatrixBlock()),
                                                0, in.getNumRows()-1, i, i, 
out, UpdateType.INPLACE);
                                }
                        return new Tuple2<>(new MatrixIndexes(ix.getRowIndex(), 
1), out);

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/data/PartitionedBlock.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/data/PartitionedBlock.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/data/PartitionedBlock.java
index ed5167b..c4febbf 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/data/PartitionedBlock.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/data/PartitionedBlock.java
@@ -82,7 +82,7 @@ public class PartitionedBlock<T extends CacheBlock> 
implements Externalizable
                        for( int i=0, ix=0; i<nrblks; i++ )
                                for( int j=0; j<ncblks; j++, ix++ ) {
                                        T tmp = (T) 
CacheBlockFactory.newInstance(code);
-                                       block.sliceOperations(i*_brlen, 
Math.min((i+1)*_brlen, rlen)-1, 
+                                       block.slice(i*_brlen, 
Math.min((i+1)*_brlen, rlen)-1, 
                                                                   j*_bclen, 
Math.min((j+1)*_bclen, clen)-1, tmp);
                                        _partBlocks[ix] = tmp;
                                }
@@ -215,7 +215,7 @@ public class PartitionedBlock<T extends CacheBlock> 
implements Externalizable
         * @throws DMLRuntimeException if DMLRuntimeException occurs
         */
        @SuppressWarnings("unchecked")
-       public T sliceOperations(long rl, long ru, long cl, long cu, T block) 
+       public T slice(long rl, long ru, long cl, long cu, T block) 
                throws DMLRuntimeException 
        {
                int lrl = (int) rl;

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/data/PartitionedBroadcast.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/data/PartitionedBroadcast.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/data/PartitionedBroadcast.java
index c58eb91..4c4766b 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/data/PartitionedBroadcast.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/data/PartitionedBroadcast.java
@@ -93,14 +93,14 @@ public class PartitionedBroadcast<T extends CacheBlock> 
implements Serializable
                return _pbc[pix].value().getBlock(rowIndex, colIndex);
        }
        
-       public T sliceOperations(long rl, long ru, long cl, long cu, T block) 
+       public T slice(long rl, long ru, long cl, long cu, T block) 
                        throws DMLRuntimeException 
        {
                T ret = null;
                
                for( Broadcast<PartitionedBlock<T>> bc : _pbc ) {
                        PartitionedBlock<T> pm = bc.value();
-                       T tmp = pm.sliceOperations(rl, ru, cl, cu, block);
+                       T tmp = pm.slice(rl, ru, cl, cu, block);
                        if( ret != null )
                                ret.merge(tmp, false);
                        else

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/FrameRDDConverterUtils.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/FrameRDDConverterUtils.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/FrameRDDConverterUtils.java
index e244c3c..ad408a1 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/FrameRDDConverterUtils.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/FrameRDDConverterUtils.java
@@ -941,7 +941,7 @@ public class FrameRDDConverterUtils
                                MatrixIndexes ixout = new MatrixIndexes(rix, 1);
                                MatrixBlock out = new MatrixBlock(ru-i+1, 
(int)_clen, sparse);
                                out.copy(0, out.getNumRows()-1, (int)cl, 
(int)cu, 
-                                       mb.sliceOperations(i, ru, 0, 
mb.getNumColumns()-1, mbreuse), true);
+                                       mb.slice(i, ru, 0, 
mb.getNumColumns()-1, mbreuse), true);
                                out.examSparsity();
                                ret.add(new Tuple2<>(ixout,out));
                        }
@@ -1026,7 +1026,7 @@ public class FrameRDDConverterUtils
                                        long cpos = 
UtilFunctions.computeCellIndex(cix, bclen, 0);
                                        int lclen = 
UtilFunctions.computeBlockSize(clen, cix, bclen);
                                        MatrixBlock matrix = new 
MatrixBlock(lrlen, lclen, false);
-                                       FrameBlock frame = 
blk.sliceOperations(fix, fix2, 
+                                       FrameBlock frame = blk.slice(fix, fix2, 
                                                        (int)cpos-1, 
(int)cpos+lclen-2, new FrameBlock());
                                        MatrixBlock mframe = 
DataConverter.convertToMatrixBlock(frame);
                                        ret.add(new Tuple2<>(new 
MatrixIndexes(rix, cix), 

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/RDDConverterUtils.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/RDDConverterUtils.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/RDDConverterUtils.java
index 2dedc91..9ed2f00 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/RDDConverterUtils.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/RDDConverterUtils.java
@@ -463,7 +463,7 @@ public class RDDConverterUtils
                {
                        ArrayList<LabeledPoint> ret = new ArrayList<>();
                        for( int i=0; i<arg0.getNumRows(); i++ ) {
-                               MatrixBlock tmp = arg0.sliceOperations(i, i, 0, 
arg0.getNumColumns()-2, new MatrixBlock());
+                               MatrixBlock tmp = arg0.slice(i, i, 0, 
arg0.getNumColumns()-2, new MatrixBlock());
                                ret.add(new LabeledPoint(arg0.getValue(i, 
arg0.getNumColumns()-1), createVector(tmp)));
                        }
                        
@@ -969,7 +969,7 @@ public class RDDConverterUtils
                        MatrixIndexes ix = arg0._1();
                        MatrixBlock blk = arg0._2();
                        for( int i=0; i<blk.getNumRows(); i++ ) {
-                               MatrixBlock tmpBlk = blk.sliceOperations(i, i, 
0, blk.getNumColumns()-1, new MatrixBlock());
+                               MatrixBlock tmpBlk = blk.slice(i, i, 0, 
blk.getNumColumns()-1, new MatrixBlock());
                                long rix = 
UtilFunctions.computeCellIndex(ix.getRowIndex(), _brlen, i);
                                ret.add(new Tuple2<>(rix, new 
Tuple2<>(ix.getColumnIndex(),tmpBlk)));
                        }

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/RDDSortUtils.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/RDDSortUtils.java
 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/RDDSortUtils.java
index 9232374..8571963 100644
--- 
a/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/RDDSortUtils.java
+++ 
b/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/RDDSortUtils.java
@@ -294,7 +294,7 @@ public class RDDSortUtils
                        throws Exception {
                        ArrayList<MatrixBlock> rows = new ArrayList<>();
                        for(int i=0; i<arg0.getNumRows(); i++)
-                               rows.add(arg0.sliceOperations(i, i, 0, 
arg0.getNumColumns()-1, new MatrixBlock()));
+                               rows.add(arg0.slice(i, i, 0, 
arg0.getNumColumns()-1, new MatrixBlock()));
                        return rows.iterator();
                }
        }
@@ -371,7 +371,7 @@ public class RDDSortUtils
                        long ixoffset = (ix.getRowIndex()-1)*_brlen;
                        for( int i=0; i<mb.getNumRows(); i++) {
                                double[] vals = 
DataConverter.convertToDoubleVector(
-                                       mb.sliceOperations(i, i, 0, 
mb.getNumColumns()-1, new MatrixBlock()));
+                                       mb.slice(i, i, 0, mb.getNumColumns()-1, 
new MatrixBlock()));
                                ret.add(new Tuple2<>(new 
ValuesIndexPair(vals,ixoffset+i+1), vals));
                        }
                        
@@ -778,7 +778,7 @@ public class RDDSortUtils
                                        int pos = 
UtilFunctions.computeCellInBlock(valix, _brlen);
                                        int len = 
UtilFunctions.computeBlockSize(_rlen, rix, _brlen);           
                                        MatrixIndexes lix = new 
MatrixIndexes(rix,ixmap.getColumnIndex());
-                                       MatrixBlock tmp = 
data.sliceOperations(_currPos, _currPos, 0, data.getNumColumns()-1, new 
MatrixBlock());
+                                       MatrixBlock tmp = data.slice(_currPos, 
_currPos, 0, data.getNumColumns()-1, new MatrixBlock());
                                        _currPos++;
                                        
                                        //handle end of block situations
@@ -867,7 +867,7 @@ public class RDDSortUtils
                                        int pos = 
UtilFunctions.computeCellInBlock(valix, _brlen);
                                        int len = 
UtilFunctions.computeBlockSize(_rlen, rix, _brlen);           
                                        MatrixIndexes lix = new 
MatrixIndexes(rix,ixmap.getColumnIndex());
-                                       MatrixBlock tmp = 
data.sliceOperations(_currPos, _currPos, 0, data.getNumColumns()-1, new 
MatrixBlock());
+                                       MatrixBlock tmp = data.slice(_currPos, 
_currPos, 0, data.getNumColumns()-1, new MatrixBlock());
                                        _currPos++;
                                        
                                        //handle end of block situations

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/io/FrameWriterBinaryBlock.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/io/FrameWriterBinaryBlock.java 
b/src/main/java/org/apache/sysml/runtime/io/FrameWriterBinaryBlock.java
index 38e1afb..d6b12c9 100644
--- a/src/main/java/org/apache/sysml/runtime/io/FrameWriterBinaryBlock.java
+++ b/src/main/java/org/apache/sysml/runtime/io/FrameWriterBinaryBlock.java
@@ -115,7 +115,7 @@ public class FrameWriterBinaryBlock extends FrameWriter
                                        
                                        //get reuse frame block and copy 
subpart to block (incl meta on first)
                                        FrameBlock block = 
getFrameBlockForReuse(blocks);
-                                       src.sliceOperations( bi, bi+len-1, 0, 
src.getNumColumns()-1, block );
+                                       src.slice( bi, bi+len-1, 0, 
src.getNumColumns()-1, block );
                                        if( bi==0 ) //first block
                                                
block.setColumnMetadata(src.getColumnMetadata());
                                        

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/io/WriterBinaryBlock.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/sysml/runtime/io/WriterBinaryBlock.java 
b/src/main/java/org/apache/sysml/runtime/io/WriterBinaryBlock.java
index 0d8e221..c9cea0f 100644
--- a/src/main/java/org/apache/sysml/runtime/io/WriterBinaryBlock.java
+++ b/src/main/java/org/apache/sysml/runtime/io/WriterBinaryBlock.java
@@ -160,7 +160,7 @@ public class WriterBinaryBlock extends MatrixWriter
                                                MatrixBlock block = 
getMatrixBlockForReuse(blocks, maxRow, maxCol, brlen, bclen);
        
                                                //copy submatrix to block
-                                               src.sliceOperations( 
row_offset, row_offset+maxRow-1, 
+                                               src.slice( row_offset, 
row_offset+maxRow-1, 
                                                                             
col_offset, col_offset+maxCol-1, block );
                                                
                                                //append block to sequence file
@@ -238,7 +238,7 @@ public class WriterBinaryBlock extends MatrixWriter
                                                        block = 
getMatrixBlockForReuse(blocks, maxRow, maxCol, brlen, bclen);
                
                                                        //copy submatrix to 
block
-                                                       src.sliceOperations( 
row_offset, row_offset+maxRow-1, 
+                                                       src.slice( row_offset, 
row_offset+maxRow-1, 
                                                                col_offset, 
col_offset+maxCol-1, block );
                                                }
                                                else //empty block (not on 
diagonal)
@@ -310,7 +310,7 @@ public class WriterBinaryBlock extends MatrixWriter
                                                                MatrixBlock 
block = getMatrixBlockForReuse(blocks, maxRow, maxCol, brlen, bclen);
                        
                                                                //copy 
submatrix to block
-                                                               
src.sliceOperations( row_offset, row_offset+maxRow-1, 
+                                                               src.slice( 
row_offset, row_offset+maxRow-1, 
                                                                                
             col_offset, col_offset+maxCol-1, block );
                                                                
                                                                //append block 
to sequence file
@@ -360,7 +360,7 @@ public class WriterBinaryBlock extends MatrixWriter
                                                                MatrixBlock 
block = getMatrixBlockForReuse(blocks, maxRow, maxCol, brlen, bclen);
                        
                                                                //copy 
submatrix to block
-                                                               
src.sliceOperations( row_offset, row_offset+maxRow-1, 
+                                                               src.slice( 
row_offset, row_offset+maxRow-1, 
                                                                                
             col_offset, col_offset+maxCol-1, block );
                                                                
                                                                //append block 
to sequence file

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/matrix/data/BinaryBlockToRowBlockConverter.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/matrix/data/BinaryBlockToRowBlockConverter.java
 
b/src/main/java/org/apache/sysml/runtime/matrix/data/BinaryBlockToRowBlockConverter.java
index cd133da..5182004 100644
--- 
a/src/main/java/org/apache/sysml/runtime/matrix/data/BinaryBlockToRowBlockConverter.java
+++ 
b/src/main/java/org/apache/sysml/runtime/matrix/data/BinaryBlockToRowBlockConverter.java
@@ -90,7 +90,7 @@ public class BinaryBlockToRowBlockConverter implements 
Converter<MatrixIndexes,
                //slice next row
                try {
                        //rowlow, rowup, collow, colup (1-based specification)
-                       _srcBlock.sliceOperations( _pos, _pos, 0, 
_srcBlock.getNumColumns()-1, _destBlock );
+                       _srcBlock.slice( _pos, _pos, 0, 
_srcBlock.getNumColumns()-1, _destBlock );
                }
                catch(DMLException ex) {
                        throw new RuntimeException("Failed to slice matrix 
block into row blocks.", ex);

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/matrix/data/CM_N_COVCell.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/matrix/data/CM_N_COVCell.java 
b/src/main/java/org/apache/sysml/runtime/matrix/data/CM_N_COVCell.java
index a01d1bb..65ef6ec 100644
--- a/src/main/java/org/apache/sysml/runtime/matrix/data/CM_N_COVCell.java
+++ b/src/main/java/org/apache/sysml/runtime/matrix/data/CM_N_COVCell.java
@@ -271,7 +271,7 @@ public class CM_N_COVCell extends MatrixValue implements 
WritableComparable
        }
 
        @Override
-       public void sliceOperations(ArrayList<IndexedMatrixValue> outlist,
+       public void slice(ArrayList<IndexedMatrixValue> outlist,
                        IndexRange range, int rowCut, int colCut, int 
blockRowFactor,
                        int blockColFactor, int boundaryRlen, int boundaryClen)
                        throws DMLRuntimeException {
@@ -293,7 +293,7 @@ public class CM_N_COVCell extends MatrixValue implements 
WritableComparable
        }
 
        @Override
-       public void appendOperations(MatrixValue valueIn2, 
ArrayList<IndexedMatrixValue> outlist,
+       public void append(MatrixValue valueIn2, ArrayList<IndexedMatrixValue> 
outlist,
                        int blockRowFactor, int blockColFactor, boolean cbind, 
boolean m2IsLast, int nextNCol)
        throws DMLRuntimeException   {
                throw new DMLRuntimeException("operation not supported for 
CM_N_COVCell");

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/matrix/data/FrameBlock.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/sysml/runtime/matrix/data/FrameBlock.java 
b/src/main/java/org/apache/sysml/runtime/matrix/data/FrameBlock.java
index 67d4f97..ff720a2 100644
--- a/src/main/java/org/apache/sysml/runtime/matrix/data/FrameBlock.java
+++ b/src/main/java/org/apache/sysml/runtime/matrix/data/FrameBlock.java
@@ -848,10 +848,10 @@ public class FrameBlock implements Writable, CacheBlock, 
Externalizable
                return ret;
        }
 
-       public FrameBlock sliceOperations(IndexRange ixrange, FrameBlock ret) 
+       public FrameBlock slice(IndexRange ixrange, FrameBlock ret) 
                throws DMLRuntimeException
        {
-               return sliceOperations(
+               return slice(
                                (int)ixrange.rowStart, (int)ixrange.rowEnd,
                                (int)ixrange.colStart, (int)ixrange.colEnd, 
ret);
        }
@@ -868,7 +868,7 @@ public class FrameBlock implements Writable, CacheBlock, 
Externalizable
         * @return frame block
         * @throws DMLRuntimeException if DMLRuntimeException occurs
         */
-       public FrameBlock sliceOperations(int rl, int ru, int cl, int cu, 
CacheBlock retCache) 
+       public FrameBlock slice(int rl, int ru, int cl, int cu, CacheBlock 
retCache) 
                throws DMLRuntimeException
        {
                FrameBlock ret = (FrameBlock)retCache;
@@ -923,7 +923,7 @@ public class FrameBlock implements Writable, CacheBlock, 
Externalizable
        }
        
        
-       public void sliceOperations(ArrayList<Pair<Long,FrameBlock>> outlist, 
IndexRange range, int rowCut)
+       public void slice(ArrayList<Pair<Long,FrameBlock>> outlist, IndexRange 
range, int rowCut)
        {
                FrameBlock top=null, bottom=null;
                Iterator<Pair<Long,FrameBlock>> p=outlist.iterator();
@@ -968,7 +968,7 @@ public class FrameBlock implements Writable, CacheBlock, 
Externalizable
         * @return frame block
         * @throws DMLRuntimeException if DMLRuntimeException occurs
         */
-       public FrameBlock appendOperations( FrameBlock that, FrameBlock ret, 
boolean cbind )
+       public FrameBlock append( FrameBlock that, FrameBlock ret, boolean 
cbind )
                throws DMLRuntimeException
        {
                if( cbind ) //COLUMN APPEND

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixAgg.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixAgg.java 
b/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixAgg.java
index ac8a185..a81dd17 100644
--- a/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixAgg.java
+++ b/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixAgg.java
@@ -365,7 +365,7 @@ public class LibMatrixAgg
                        ArrayList<CumAggTask> tasks2 = new ArrayList<>();
                        for( int i=0; i<k & i*blklen<m; i++ ) {
                                double[] agg = (i==0)? null : 
-                                       
DataConverter.convertToDoubleVector(tmp2.sliceOperations(i-1, i-1, 0, n2-1, new 
MatrixBlock()), false);
+                                       
DataConverter.convertToDoubleVector(tmp2.slice(i-1, i-1, 0, n2-1, new 
MatrixBlock()), false);
                                tasks2.add( new CumAggTask(in, agg, out, 
aggtype, uop, i*blklen, Math.min((i+1)*blklen, m)) );
                        }
                        List<Future<Long>> taskret2 = pool.invokeAll(tasks2);   

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixReorg.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixReorg.java 
b/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixReorg.java
index 3138cd3..e7988c8 100644
--- a/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixReorg.java
+++ b/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixReorg.java
@@ -274,7 +274,7 @@ public class LibMatrixReorg
                        //slice first block
                        MatrixIndexes outix1 = new MatrixIndexes(blkix1, 
inix.getColumnIndex());
                        MatrixBlock outblk1 = new MatrixBlock(blklen1, 
inblk.getNumColumns(), inblk.isInSparseFormat());
-                       MatrixBlock tmp1 = tmpblk.sliceOperations(0, iposCut, 
0, tmpblk.getNumColumns()-1, new MatrixBlock());
+                       MatrixBlock tmp1 = tmpblk.slice(0, iposCut, 0, 
tmpblk.getNumColumns()-1, new MatrixBlock());
                        outblk1.leftIndexingOperations(tmp1, ipos1, 
ipos1+tmp1.getNumRows()-1,
                                0, tmpblk.getNumColumns()-1, outblk1, 
UpdateType.INPLACE_PINNED);
                        out.add(new IndexedMatrixValue(outix1, outblk1));
@@ -283,7 +283,7 @@ public class LibMatrixReorg
                        if( blkix1 != blkix2 ) {
                                MatrixIndexes outix2 = new 
MatrixIndexes(blkix2, inix.getColumnIndex());
                                MatrixBlock outblk2 = new MatrixBlock(blklen2, 
inblk.getNumColumns(), inblk.isInSparseFormat());
-                               MatrixBlock tmp2 = 
tmpblk.sliceOperations(iposCut+1, tmpblk.getNumRows()-1, 0, 
tmpblk.getNumColumns()-1, new MatrixBlock());
+                               MatrixBlock tmp2 = tmpblk.slice(iposCut+1, 
tmpblk.getNumRows()-1, 0, tmpblk.getNumColumns()-1, new MatrixBlock());
                                outblk2.leftIndexingOperations(tmp2, 0, 
tmp2.getNumRows()-1, 0, tmpblk.getNumColumns()-1, outblk2, 
UpdateType.INPLACE_PINNED);
                                out.add(new IndexedMatrixValue(outix2, 
outblk2));
                        }
@@ -578,7 +578,7 @@ public class LibMatrixReorg
                                if( rix > 0 ) //otherwise empty row
                                {
                                        //get single row from source block
-                                       MatrixBlock src = (MatrixBlock) 
linData.sliceOperations(
+                                       MatrixBlock src = (MatrixBlock) 
linData.slice(
                                                          i, i, 0, 
(int)(clen-1), new MatrixBlock());
                                        long brix = (rix-1)/brlen+1;
                                        long lbrix = (rix-1)%brlen;
@@ -606,7 +606,7 @@ public class LibMatrixReorg
                                if( cix > 0 ) //otherwise empty row
                                {
                                        //get single row from source block
-                                       MatrixBlock src = (MatrixBlock) 
linData.sliceOperations(
+                                       MatrixBlock src = (MatrixBlock) 
linData.slice(
                                                          0, (int)(rlen-1), i, 
i, new MatrixBlock());
                                        long bcix = (cix-1)/bclen+1;
                                        long lbcix = (cix-1)%bclen;
@@ -700,7 +700,7 @@ public class LibMatrixReorg
                if( rows ) //expanded vertically
                {
                        for( int rl=0; rl<tmp.getNumRows(); rl+=brlen ) {
-                               MatrixBlock mb = tmp.sliceOperations(
+                               MatrixBlock mb = tmp.slice(
                                                rl, (int)(Math.min(rl+brlen, 
tmp.getNumRows())-1), 
                                                0, tmp.getNumColumns()-1, new 
MatrixBlock());
                                outList.add(new IndexedMatrixValue(
@@ -710,7 +710,7 @@ public class LibMatrixReorg
                else //expanded horizontally
                {
                        for( int cl=0; cl<tmp.getNumColumns(); cl+=bclen ) {
-                               MatrixBlock mb = tmp.sliceOperations(
+                               MatrixBlock mb = tmp.slice(
                                                0, tmp.getNumRows()-1,
                                                cl, (int)(Math.min(cl+bclen, 
tmp.getNumColumns())-1), new MatrixBlock());
                                outList.add(new IndexedMatrixValue(

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixBlock.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixBlock.java 
b/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixBlock.java
index 15e37e8..7de42a5 100644
--- a/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixBlock.java
+++ b/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixBlock.java
@@ -3385,15 +3385,15 @@ public class MatrixBlock extends MatrixValue implements 
CacheBlock, Externalizab
                return result;
        }
 
-       public MatrixBlock appendOperations( MatrixBlock that, MatrixBlock ret 
) throws DMLRuntimeException {
-               return appendOperations(that, ret, true); //default cbind
+       public MatrixBlock append( MatrixBlock that, MatrixBlock ret ) throws 
DMLRuntimeException {
+               return append(that, ret, true); //default cbind
        }
 
-       public MatrixBlock appendOperations( MatrixBlock that, MatrixBlock ret, 
boolean cbind ) throws DMLRuntimeException {
-               return appendOperations(new MatrixBlock[]{that}, ret, cbind);
+       public MatrixBlock append( MatrixBlock that, MatrixBlock ret, boolean 
cbind ) throws DMLRuntimeException {
+               return append(new MatrixBlock[]{that}, ret, cbind);
        }
        
-       public MatrixBlock appendOperations( MatrixBlock[] that, MatrixBlock 
ret, boolean cbind )
+       public MatrixBlock append( MatrixBlock[] that, MatrixBlock ret, boolean 
cbind )
                throws DMLRuntimeException 
        {
                MatrixBlock result = checkType( ret );
@@ -3687,15 +3687,15 @@ public class MatrixBlock extends MatrixValue implements 
CacheBlock, Externalizab
        
        
 
-       public MatrixBlock sliceOperations(IndexRange ixrange, MatrixBlock ret) 
throws DMLRuntimeException {
-               return sliceOperations(
+       public MatrixBlock slice(IndexRange ixrange, MatrixBlock ret) throws 
DMLRuntimeException {
+               return slice(
                        (int)ixrange.rowStart, (int)ixrange.rowEnd, 
                        (int)ixrange.colStart, (int)ixrange.colEnd, true, ret);
        }
        
        @Override
-       public MatrixBlock sliceOperations(int rl, int ru, int cl, int cu, 
CacheBlock ret) throws DMLRuntimeException {
-               return sliceOperations(rl, ru, cl, cu, true, ret);
+       public MatrixBlock slice(int rl, int ru, int cl, int cu, CacheBlock 
ret) throws DMLRuntimeException {
+               return slice(rl, ru, cl, cu, true, ret);
        }
        
        /**
@@ -3711,7 +3711,7 @@ public class MatrixBlock extends MatrixValue implements 
CacheBlock, Externalizab
         * @return matrix block output matrix block
         * @throws DMLRuntimeException if DMLRuntimeException occurs
         */
-       public MatrixBlock sliceOperations(int rl, int ru, int cl, int cu, 
boolean deep, CacheBlock ret) 
+       public MatrixBlock slice(int rl, int ru, int cl, int cu, boolean deep, 
CacheBlock ret) 
                throws DMLRuntimeException 
        {       
                // check the validity of bounds
@@ -3832,7 +3832,7 @@ public class MatrixBlock extends MatrixValue implements 
CacheBlock, Externalizab
        }
        
        @Override
-       public void sliceOperations(ArrayList<IndexedMatrixValue> outlist, 
IndexRange range, int rowCut, int colCut, 
+       public void slice(ArrayList<IndexedMatrixValue> outlist, IndexRange 
range, int rowCut, int colCut, 
                        int normalBlockRowFactor, int normalBlockColFactor, int 
boundaryRlen, int boundaryClen)
        {
                MatrixBlock topleft=null, topright=null, bottomleft=null, 
bottomright=null;
@@ -3944,7 +3944,7 @@ public class MatrixBlock extends MatrixValue implements 
CacheBlock, Externalizab
        @Override
        //This the append operations for MR side
        //nextNCol is the number columns for the block right of block v2
-       public void appendOperations(MatrixValue v2,
+       public void append(MatrixValue v2,
                        ArrayList<IndexedMatrixValue> outlist, int 
blockRowFactor,
                        int blockColFactor, boolean cbind, boolean m2IsLast, 
int nextNCol)
                        throws DMLRuntimeException 
@@ -3965,7 +3965,7 @@ public class MatrixBlock extends MatrixValue implements 
CacheBlock, Externalizab
                        if( cbind && clen + m2.clen < blockColFactor
                                || !cbind && rlen + m2.rlen < blockRowFactor )
                        {
-                               appendOperations(m2, (MatrixBlock) 
outlist.get(0).getValue(), cbind);
+                               append(m2, (MatrixBlock) 
outlist.get(0).getValue(), cbind);
                        }
                        //two output blocks (via slice and append)
                        else
@@ -3974,15 +3974,15 @@ public class MatrixBlock extends MatrixValue implements 
CacheBlock, Externalizab
                                MatrixBlock ret1 = (MatrixBlock) 
outlist.get(0).getValue();
                                int lrlen1 = cbind ? rlen-1 : 
blockRowFactor-rlen-1;
                                int lclen1 = cbind ? blockColFactor-clen-1 : 
clen-1;
-                               MatrixBlock tmp1 = m2.sliceOperations(0, 
lrlen1, 0, lclen1, new MatrixBlock());
-                               appendOperations(tmp1, ret1, cbind);
+                               MatrixBlock tmp1 = m2.slice(0, lrlen1, 0, 
lclen1, new MatrixBlock());
+                               append(tmp1, ret1, cbind);
        
                                //prepare output block 2
                                MatrixBlock ret2 = (MatrixBlock) 
outlist.get(1).getValue();
                                if( cbind )
-                                       m2.sliceOperations(0, rlen-1, lclen1+1, 
m2.clen-1, ret2);
+                                       m2.slice(0, rlen-1, lclen1+1, 
m2.clen-1, ret2);
                                else
-                                       m2.sliceOperations(lrlen1+1, m2.rlen-1, 
0, clen-1, ret2);
+                                       m2.slice(lrlen1+1, m2.rlen-1, 0, 
clen-1, ret2);
                        }
                }
        }

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixCell.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixCell.java 
b/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixCell.java
index a9b5b37..e59ff0d 100644
--- a/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixCell.java
+++ b/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixCell.java
@@ -372,7 +372,7 @@ public class MatrixCell extends MatrixValue implements 
WritableComparable, Seria
        }
 
        @Override
-       public void sliceOperations(ArrayList<IndexedMatrixValue> outlist,
+       public void slice(ArrayList<IndexedMatrixValue> outlist,
                        IndexRange range, int rowCut, int colCut, int 
blockRowFactor,
                        int blockColFactor, int boundaryRlen, int boundaryClen)
                        throws DMLRuntimeException {
@@ -401,7 +401,7 @@ public class MatrixCell extends MatrixValue implements 
WritableComparable, Seria
        }
 
        @Override
-       public void appendOperations(MatrixValue valueIn2, 
ArrayList<IndexedMatrixValue> outlist,
+       public void append(MatrixValue valueIn2, ArrayList<IndexedMatrixValue> 
outlist,
                        int blockRowFactor, int blockColFactor, boolean cbind, 
boolean m2IsLast, int nextNCol) 
        throws DMLRuntimeException  {
                ((MatrixCell)outlist.get(0).getValue()).setValue(this.value);

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixValue.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixValue.java 
b/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixValue.java
index 4f225be..3c1c117 100644
--- a/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixValue.java
+++ b/src/main/java/org/apache/sysml/runtime/matrix/data/MatrixValue.java
@@ -148,14 +148,14 @@ public abstract class MatrixValue implements 
WritableComparable
        public abstract MatrixValue zeroOutOperations(MatrixValue result, 
IndexRange range, boolean complementary)
        throws DMLRuntimeException;
        
-       public abstract void sliceOperations(ArrayList<IndexedMatrixValue> 
outlist, IndexRange range, int rowCut, int colCut, 
+       public abstract void slice(ArrayList<IndexedMatrixValue> outlist, 
IndexRange range, int rowCut, int colCut, 
                        int blockRowFactor, int blockColFactor, int 
boundaryRlen, int boundaryClen)
        throws DMLRuntimeException;
 
        public abstract MatrixValue replaceOperations( MatrixValue result, 
double pattern, double replacement )
                        throws DMLRuntimeException;
 
-       public abstract void appendOperations(MatrixValue valueIn2, 
ArrayList<IndexedMatrixValue> outlist,
+       public abstract void append(MatrixValue valueIn2, 
ArrayList<IndexedMatrixValue> outlist,
                        int blockRowFactor, int blockColFactor, boolean cbind, 
boolean m2IsLast, int nextNCol)
                        throws DMLRuntimeException ;
 }

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/matrix/data/OperationsOnMatrixValues.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/matrix/data/OperationsOnMatrixValues.java
 
b/src/main/java/org/apache/sysml/runtime/matrix/data/OperationsOnMatrixValues.java
index a5e1d7b..79cddda 100644
--- 
a/src/main/java/org/apache/sysml/runtime/matrix/data/OperationsOnMatrixValues.java
+++ 
b/src/main/java/org/apache/sysml/runtime/matrix/data/OperationsOnMatrixValues.java
@@ -59,7 +59,7 @@ public class OperationsOnMatrixValues
                        ArrayList<IndexedMatrixValue> outlist, int 
blockRowFactor, int blockColFactor,  boolean cbind, boolean m2IsLast, int 
nextNCol) 
        throws DMLRuntimeException
        {
-               valueIn1.appendOperations(valueIn2, outlist, blockRowFactor, 
blockColFactor, cbind, m2IsLast, nextNCol);
+               valueIn1.append(valueIn2, outlist, blockRowFactor, 
blockColFactor, cbind, m2IsLast, nextNCol);
        }
        
        public static void performZeroOut(MatrixIndexes indexesIn, MatrixValue 
valueIn, 
@@ -344,7 +344,7 @@ public class OperationsOnMatrixValues
                        }
                
                //execute actual slice operation
-               in.getValue().sliceOperations(outlist, tmpRange, rowCut, 
colCut, brlen, bclen, boundaryRlen, boundaryClen);
+               in.getValue().slice(outlist, tmpRange, rowCut, colCut, brlen, 
bclen, boundaryRlen, boundaryClen);
        }
 
        public static void performShift(IndexedMatrixValue in, IndexRange 
ixrange, int brlen, int bclen, long rlen, long clen, 
ArrayList<IndexedMatrixValue> outlist) 
@@ -387,7 +387,7 @@ public class OperationsOnMatrixValues
                                int rhs_lcl = 
UtilFunctions.computeCellInBlock(rhs_cl, bclen);
                                int rhs_lcu = 
UtilFunctions.computeCellInBlock(rhs_cu, bclen);
                                
-                               MatrixBlock slicedRHSBlk = 
mb.sliceOperations(rhs_lrl, rhs_lru, rhs_lcl, rhs_lcu, new MatrixBlock());
+                               MatrixBlock slicedRHSBlk = mb.slice(rhs_lrl, 
rhs_lru, rhs_lcl, rhs_lcu, new MatrixBlock());
                                
                                int lbrlen = 
UtilFunctions.computeBlockSize(rlen, leftRowIndex, brlen);
                                int lbclen = 
UtilFunctions.computeBlockSize(clen, leftColIndex, bclen);
@@ -420,7 +420,7 @@ public class OperationsOnMatrixValues
                                int row_offset = blockRow*brlen;
 
                                //copy submatrix to block
-                               MatrixBlock tmp = out.sliceOperations( 
row_offset, row_offset+maxRow-1, 
+                               MatrixBlock tmp = out.slice( row_offset, 
row_offset+maxRow-1, 
                                                             0, 
out.getNumColumns()-1, new MatrixBlock() );
                                
                                //append block to result cache
@@ -498,7 +498,7 @@ public class OperationsOnMatrixValues
                }
                
                //execute actual slice operation
-               block.sliceOperations(outlist, tmpRange, rowCut);
+               block.slice(outlist, tmpRange, rowCut);
        }
 
        public static void performShift(Pair<Long,FrameBlock> in, IndexRange 
ixrange, int brlenLeft, int clenLeft/*, int bclen*/, long rlen, long clen, 
ArrayList<Pair<Long,FrameBlock>> outlist) 
@@ -538,7 +538,7 @@ public class OperationsOnMatrixValues
                        int rhs_lcl = (int)rhs_cl-1;
                        int rhs_lcu = (int)rhs_cu-1;
                                                                                
                                                                                
-                       FrameBlock slicedRHSBlk = fb.sliceOperations(rhs_lrl, 
rhs_lru, rhs_lcl, rhs_lcu, new FrameBlock());
+                       FrameBlock slicedRHSBlk = fb.slice(rhs_lrl, rhs_lru, 
rhs_lcl, rhs_lcu, new FrameBlock());
                        
                        int lbclen = clenLeft;
                        

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/matrix/mapred/GMRCtableBuffer.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/matrix/mapred/GMRCtableBuffer.java 
b/src/main/java/org/apache/sysml/runtime/matrix/mapred/GMRCtableBuffer.java
index eba98ad..d485fd3 100644
--- a/src/main/java/org/apache/sysml/runtime/matrix/mapred/GMRCtableBuffer.java
+++ b/src/main/java/org/apache/sysml/runtime/matrix/mapred/GMRCtableBuffer.java
@@ -182,7 +182,7 @@ public class GMRCtableBuffer
                                                                MatrixBlock 
block = MatrixWriter.getMatrixBlockForReuse(blocks, maxRow, maxCol, brlen, 
bclen);
                        
                                                                //copy 
submatrix to block
-                                                               
outBlock.sliceOperations( row_offset, row_offset+maxRow-1, 
+                                                               outBlock.slice( 
row_offset, row_offset+maxRow-1, 
                                                                                
                                  col_offset, col_offset+maxCol-1, block );
                                                                
                                                                // TODO: skip 
empty "block"

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/matrix/mapred/GroupedAggMRMapper.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/runtime/matrix/mapred/GroupedAggMRMapper.java 
b/src/main/java/org/apache/sysml/runtime/matrix/mapred/GroupedAggMRMapper.java
index 88152f5..2702360 100644
--- 
a/src/main/java/org/apache/sysml/runtime/matrix/mapred/GroupedAggMRMapper.java
+++ 
b/src/main/java/org/apache/sysml/runtime/matrix/mapred/GroupedAggMRMapper.java
@@ -74,9 +74,9 @@ public class GroupedAggMRMapper extends MapperBase
                                        {
                                                try 
                                                {
-                                                       MatrixBlock group = 
block.sliceOperations(0, block.getNumRows()-1, 
+                                                       MatrixBlock group = 
block.slice(0, block.getNumRows()-1, 
                                                                        
block.getNumColumns()-1, block.getNumColumns()-1, new MatrixBlock());
-                                                       MatrixBlock target = 
block.sliceOperations(0, block.getNumRows()-1, 
+                                                       MatrixBlock target = 
block.slice(0, block.getNumRows()-1, 
                                                                        0, 
block.getNumColumns()-2, new MatrixBlock());
                                                                
                                                        MatrixBlock tmp = 
group.groupedAggOperations(target, null, new MatrixBlock(), ins.getNGroups(), 
ins.getOperator());

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/main/java/org/apache/sysml/runtime/util/DataConverter.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/sysml/runtime/util/DataConverter.java 
b/src/main/java/org/apache/sysml/runtime/util/DataConverter.java
index 284e783..83b8149 100644
--- a/src/main/java/org/apache/sysml/runtime/util/DataConverter.java
+++ b/src/main/java/org/apache/sysml/runtime/util/DataConverter.java
@@ -786,7 +786,7 @@ public class DataConverter
                        //cache-friendly sparse/dense row slicing 
                        if( !mb.isEmptyBlock(false) ) {
                                for( int i=0; i<rows; i++ )
-                                       mb.sliceOperations(i, i, 0, cols-1, 
ret[i]);
+                                       mb.slice(i, i, 0, cols-1, ret[i]);
                        }
                }
                

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/test/java/org/apache/sysml/test/integration/functions/codegen/CPlanVectorPrimitivesTest.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/sysml/test/integration/functions/codegen/CPlanVectorPrimitivesTest.java
 
b/src/test/java/org/apache/sysml/test/integration/functions/codegen/CPlanVectorPrimitivesTest.java
index 076620b..23dd6fb 100644
--- 
a/src/test/java/org/apache/sysml/test/integration/functions/codegen/CPlanVectorPrimitivesTest.java
+++ 
b/src/test/java/org/apache/sysml/test/integration/functions/codegen/CPlanVectorPrimitivesTest.java
@@ -729,7 +729,7 @@ public class CPlanVectorPrimitivesTest extends 
AutomatedTestBase
                                                in.getSparseBlock().pos(i), 
in.getSparseBlock().size(i), n));
                                
                                //execute comparison operation
-                               MatrixBlock in2 = in.sliceOperations(i, i, 0, 
n-1, new MatrixBlock());
+                               MatrixBlock in2 = in.slice(i, i, 0, n-1, new 
MatrixBlock());
                                Double ret2 = -1d;
                                switch( aggtype ) {
                                        case ROW_SUMS: ret2 = in2.sum(); break;
@@ -770,7 +770,7 @@ public class CPlanVectorPrimitivesTest extends 
AutomatedTestBase
                                String opcode = 
utype.name().split("_")[1].toLowerCase();
                                UnaryOperator uop = new 
UnaryOperator(Builtin.getBuiltinFnObject(opcode));
                                double[] ret2 = 
DataConverter.convertToDoubleVector(((MatrixBlock)in
-                                       .sliceOperations(i, i, 0, n-1, new 
MatrixBlock())
+                                       .slice(i, i, 0, n-1, new MatrixBlock())
                                        .unaryOperations(uop, new 
MatrixBlock())), false);
                                
                                //compare results
@@ -828,8 +828,8 @@ public class CPlanVectorPrimitivesTest extends 
AutomatedTestBase
                                
                                //execute comparison operation
                                String opcode = 
Hop.getBinaryOpCode(OpOp2.valueOf(bintype.name().split("_")[1]));
-                               MatrixBlock in1 = inA.sliceOperations(i, i, 0, 
n-1, new MatrixBlock());
-                               MatrixBlock in2 = inB.sliceOperations(i, i, 0, 
n-1, new MatrixBlock());
+                               MatrixBlock in1 = inA.slice(i, i, 0, n-1, new 
MatrixBlock());
+                               MatrixBlock in2 = inB.slice(i, i, 0, n-1, new 
MatrixBlock());
                                double[] ret2 = null;
                                if( type1 == InputType.SCALAR ) {
                                        ScalarOperator bop = 
InstructionUtils.parseScalarBinaryOperator(opcode, true);

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/test/java/org/apache/sysml/test/integration/functions/compress/BasicMatrixAppendTest.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/sysml/test/integration/functions/compress/BasicMatrixAppendTest.java
 
b/src/test/java/org/apache/sysml/test/integration/functions/compress/BasicMatrixAppendTest.java
index 83a1164..c44bc28 100644
--- 
a/src/test/java/org/apache/sysml/test/integration/functions/compress/BasicMatrixAppendTest.java
+++ 
b/src/test/java/org/apache/sysml/test/integration/functions/compress/BasicMatrixAppendTest.java
@@ -165,10 +165,10 @@ public class BasicMatrixAppendTest extends 
AutomatedTestBase
                                cmb.compress();
                        
                        //matrix-vector uncompressed
-                       MatrixBlock ret1 = 
(MatrixBlock)mb.appendOperations(vector, new MatrixBlock());
+                       MatrixBlock ret1 = (MatrixBlock)mb.append(vector, new 
MatrixBlock());
                        
                        //matrix-vector compressed
-                       MatrixBlock ret2 = cmb.appendOperations(vector, new 
MatrixBlock());
+                       MatrixBlock ret2 = cmb.append(vector, new 
MatrixBlock());
                        if( compress )
                                ret2 = 
((CompressedMatrixBlock)ret2).decompress();
                        

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/test/java/org/apache/sysml/test/integration/functions/compress/BasicUnaryAggregateTest.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/sysml/test/integration/functions/compress/BasicUnaryAggregateTest.java
 
b/src/test/java/org/apache/sysml/test/integration/functions/compress/BasicUnaryAggregateTest.java
index 9edaf9c..38e81f2 100644
--- 
a/src/test/java/org/apache/sysml/test/integration/functions/compress/BasicUnaryAggregateTest.java
+++ 
b/src/test/java/org/apache/sysml/test/integration/functions/compress/BasicUnaryAggregateTest.java
@@ -1052,7 +1052,7 @@ public class BasicUnaryAggregateTest extends 
AutomatedTestBase
                                input = TestUtils.round(input);
                        }
                        MatrixBlock mb = 
DataConverter.convertToMatrixBlock(input);
-                       mb = mb.appendOperations(MatrixBlock.seqOperations(0.1, 
rows-0.1, 1), new MatrixBlock()); //uc group
+                       mb = mb.append(MatrixBlock.seqOperations(0.1, rows-0.1, 
1), new MatrixBlock()); //uc group
                        
                        //prepare unary aggregate operator
                        AggregateUnaryOperator auop = null;

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/test/java/org/apache/sysml/test/integration/functions/compress/LargeParUnaryAggregateTest.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/sysml/test/integration/functions/compress/LargeParUnaryAggregateTest.java
 
b/src/test/java/org/apache/sysml/test/integration/functions/compress/LargeParUnaryAggregateTest.java
index 69f2c57..65553ff 100644
--- 
a/src/test/java/org/apache/sysml/test/integration/functions/compress/LargeParUnaryAggregateTest.java
+++ 
b/src/test/java/org/apache/sysml/test/integration/functions/compress/LargeParUnaryAggregateTest.java
@@ -1055,7 +1055,7 @@ public class LargeParUnaryAggregateTest extends 
AutomatedTestBase
                                input = TestUtils.round(input);
                        }
                        MatrixBlock mb = 
DataConverter.convertToMatrixBlock(input);
-                       mb = mb.appendOperations(MatrixBlock.seqOperations(0.1, 
rows-0.1, 1), new MatrixBlock()); //uc group
+                       mb = mb.append(MatrixBlock.seqOperations(0.1, rows-0.1, 
1), new MatrixBlock()); //uc group
                        
                        //prepare unary aggregate operator
                        AggregateUnaryOperator auop = null;

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/test/java/org/apache/sysml/test/integration/functions/compress/ParUnaryAggregateTest.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/sysml/test/integration/functions/compress/ParUnaryAggregateTest.java
 
b/src/test/java/org/apache/sysml/test/integration/functions/compress/ParUnaryAggregateTest.java
index 7355645..cbe43ee 100644
--- 
a/src/test/java/org/apache/sysml/test/integration/functions/compress/ParUnaryAggregateTest.java
+++ 
b/src/test/java/org/apache/sysml/test/integration/functions/compress/ParUnaryAggregateTest.java
@@ -1054,7 +1054,7 @@ public class ParUnaryAggregateTest extends 
AutomatedTestBase
                                input = TestUtils.round(input);
                        }
                        MatrixBlock mb = 
DataConverter.convertToMatrixBlock(input);
-                       mb = mb.appendOperations(MatrixBlock.seqOperations(0.1, 
rows-0.1, 1), new MatrixBlock()); //uc group
+                       mb = mb.append(MatrixBlock.seqOperations(0.1, rows-0.1, 
1), new MatrixBlock()); //uc group
                        
                        //prepare unary aggregate operator
                        AggregateUnaryOperator auop = null;

http://git-wip-us.apache.org/repos/asf/systemml/blob/d16cc7cf/src/test/java/org/apache/sysml/test/integration/functions/frame/FrameAppendTest.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/sysml/test/integration/functions/frame/FrameAppendTest.java
 
b/src/test/java/org/apache/sysml/test/integration/functions/frame/FrameAppendTest.java
index 46d07b5..2ca15de 100644
--- 
a/src/test/java/org/apache/sysml/test/integration/functions/frame/FrameAppendTest.java
+++ 
b/src/test/java/org/apache/sysml/test/integration/functions/frame/FrameAppendTest.java
@@ -110,10 +110,10 @@ public class FrameAppendTest extends AutomatedTestBase
                        //core append operations matrix blocks
                        MatrixBlock mbA = DataConverter.convertToMatrixBlock(A);
                        MatrixBlock mbB = DataConverter.convertToMatrixBlock(B);
-                       MatrixBlock mbC = mbA.appendOperations(mbB, new 
MatrixBlock(), atype==AppendType.CBIND);
+                       MatrixBlock mbC = mbA.append(mbB, new MatrixBlock(), 
atype==AppendType.CBIND);
                        
                        //core append operations frame blocks
-                       FrameBlock frame3 = frame1.appendOperations(frame2, new 
FrameBlock(), atype==AppendType.CBIND);
+                       FrameBlock frame3 = frame1.append(frame2, new 
FrameBlock(), atype==AppendType.CBIND);
                        
                        //check basic meta data
                        if( frame3.getNumRows() != mbC.getNumRows() )

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