Repository: systemml
Updated Branches:
  refs/heads/master 140f1e1b7 -> 215a1cc6b


http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/main/java/org/apache/sysml/hops/globalopt/gdfresolve/GDFMismatchHeuristicBlocksizeOrFirst.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/hops/globalopt/gdfresolve/GDFMismatchHeuristicBlocksizeOrFirst.java
 
b/src/main/java/org/apache/sysml/hops/globalopt/gdfresolve/GDFMismatchHeuristicBlocksizeOrFirst.java
deleted file mode 100644
index df40724..0000000
--- 
a/src/main/java/org/apache/sysml/hops/globalopt/gdfresolve/GDFMismatchHeuristicBlocksizeOrFirst.java
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- * 
- *   http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-package org.apache.sysml.hops.globalopt.gdfresolve;
-
-import org.apache.sysml.hops.globalopt.RewriteConfig;
-
-public class GDFMismatchHeuristicBlocksizeOrFirst extends GDFMismatchHeuristic
-{
-       
-       @Override
-       public String getName(){
-               return "BLOCKSIZE_OR_FIRST";
-       }
-       
-       @Override
-       public boolean resolveMismatch( RewriteConfig currRc, RewriteConfig 
newRc ) 
-       {
-               //check for blocksize mismatch
-               if( currRc.getBlockSize() != newRc.getBlockSize() ) 
-               {
-                       //choose the new rewrite config if its blocksize is 
larger than 
-                       //the current (intuition: we generally prefer larger 
blocksizes 
-                       //because this often enables better physical operators 
with constraints
-                       //like ncol(X) <= blocksize)
-                       return (currRc.getBlockSize() < newRc.getBlockSize());
-               }
-               
-               //return the current rewrite configuration (first come first 
served)
-               //if the previous check for blocksize mismatch failed
-               return false;
-       }
-}

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/main/java/org/apache/sysml/hops/globalopt/gdfresolve/GDFMismatchHeuristicFirst.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/hops/globalopt/gdfresolve/GDFMismatchHeuristicFirst.java
 
b/src/main/java/org/apache/sysml/hops/globalopt/gdfresolve/GDFMismatchHeuristicFirst.java
deleted file mode 100644
index a96bc33..0000000
--- 
a/src/main/java/org/apache/sysml/hops/globalopt/gdfresolve/GDFMismatchHeuristicFirst.java
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- * 
- *   http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-package org.apache.sysml.hops.globalopt.gdfresolve;
-
-import org.apache.sysml.hops.globalopt.RewriteConfig;
-
-public class GDFMismatchHeuristicFirst extends GDFMismatchHeuristic
-{
-       
-       @Override
-       public String getName(){
-               return "FIRST";
-       }
-       
-       @Override
-       public boolean resolveMismatch( RewriteConfig currRc, RewriteConfig 
newRc ) 
-       {
-               //always return the current rewrite configuration (first come 
first served)
-               return false;
-       }
-}

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/main/java/org/apache/sysml/hops/globalopt/gdfresolve/MismatchHeuristicFactory.java
----------------------------------------------------------------------
diff --git 
a/src/main/java/org/apache/sysml/hops/globalopt/gdfresolve/MismatchHeuristicFactory.java
 
b/src/main/java/org/apache/sysml/hops/globalopt/gdfresolve/MismatchHeuristicFactory.java
deleted file mode 100644
index 9846850..0000000
--- 
a/src/main/java/org/apache/sysml/hops/globalopt/gdfresolve/MismatchHeuristicFactory.java
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- * 
- *   http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-package org.apache.sysml.hops.globalopt.gdfresolve;
-
-import 
org.apache.sysml.hops.globalopt.gdfresolve.GDFMismatchHeuristic.MismatchHeuristicType;
-import org.apache.sysml.runtime.DMLRuntimeException;
-
-public abstract class MismatchHeuristicFactory 
-{
-
-       public static GDFMismatchHeuristic createMismatchHeuristic( 
MismatchHeuristicType type ) 
-               throws DMLRuntimeException
-       {
-               switch( type ) {
-                       case FIRST: 
-                               return new GDFMismatchHeuristicFirst(); 
-                       case BLOCKSIZE_OR_FIRST: 
-                               return new 
GDFMismatchHeuristicBlocksizeOrFirst();
-                               
-                       default:
-                               throw new DMLRuntimeException("Unsupported 
mismatch heuristic: "+type);
-               }       
-       }
-}

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/main/java/org/apache/sysml/utils/Explain.java
----------------------------------------------------------------------
diff --git a/src/main/java/org/apache/sysml/utils/Explain.java 
b/src/main/java/org/apache/sysml/utils/Explain.java
index b72fe99..e0a9c92 100644
--- a/src/main/java/org/apache/sysml/utils/Explain.java
+++ b/src/main/java/org/apache/sysml/utils/Explain.java
@@ -39,9 +39,6 @@ import org.apache.sysml.hops.UnaryOp;
 import org.apache.sysml.hops.codegen.cplan.CNode;
 import org.apache.sysml.hops.codegen.cplan.CNodeMultiAgg;
 import org.apache.sysml.hops.codegen.cplan.CNodeTpl;
-import org.apache.sysml.hops.globalopt.gdfgraph.GDFLoopNode;
-import org.apache.sysml.hops.globalopt.gdfgraph.GDFNode;
-import org.apache.sysml.hops.globalopt.gdfgraph.GDFNode.NodeType;
 import org.apache.sysml.hops.ipa.FunctionCallGraph;
 import org.apache.sysml.lops.Lop;
 import org.apache.sysml.parser.DMLProgram;
@@ -474,22 +471,6 @@ public class Explain
                return explainCNode(node, level);
        }
 
-       public static String explainGDFNodes( ArrayList<GDFNode> gdfnodes ) 
-               throws DMLRuntimeException
-       {
-               return explainGDFNodes(gdfnodes, 0);
-       }
-
-       public static String explainGDFNodes( ArrayList<GDFNode> gdfnodes, int 
level ) 
-               throws DMLRuntimeException
-       {
-               StringBuilder sb = new StringBuilder();
-               HashSet<Long> memo = new HashSet<>();
-               for( GDFNode gnode : gdfnodes )
-                       sb.append(explainGDFNode(gnode, level, memo));
-               return sb.toString();
-       }
-       
        /**
         * Counts the number of compiled MRJob/Spark instructions in the
         * given runtime program.
@@ -980,104 +961,7 @@ public class Explain
                
                return sb.toString();
        }
-       
-       //////////////
-       // internal explain GDFNODE
 
-       /**
-        * Do a post-order traverse through the GDFNode DAG and explain each 
GDFNode.
-        * Note: nodes referring to literalops are suppressed.
-        * 
-        * @param gnode GDF node
-        * @param level offset
-        * @param memo memoization table
-        * @return string explanation
-        * @throws DMLRuntimeException if DMLRuntimeException occurs
-        */
-       private static String explainGDFNode(GDFNode gnode, int level, 
HashSet<Long> memo) 
-               throws DMLRuntimeException 
-       {
-               //basic memoization via memo table since gnode has no visit 
status
-               if( memo.contains(gnode.getID()) || 
-                       gnode.getNodeType()==NodeType.HOP_NODE && 
gnode.getHop() instanceof LiteralOp ) 
-               {
-                       return "";
-               }
-               
-               StringBuilder sb = new StringBuilder();
-               String offset = createOffset(level);
-               
-               for( GDFNode input : gnode.getInputs() )
-                       sb.append(explainGDFNode(input, level, memo));
-               
-               //indentation
-               sb.append(offset);
-               
-               //hop id
-               String deps = null;
-               if( SHOW_DATA_DEPENDENCIES ) {
-                       sb.append("("+gnode.getID()+") ");
-               
-                       StringBuilder childs = new StringBuilder();
-                       childs.append(" (");
-                       boolean childAdded = false;
-                       for( GDFNode input : gnode.getInputs() ) {
-                               childs.append(childAdded?",":"");
-                               childs.append(input.getID());
-                               childAdded = true;
-                       }
-                       childs.append(")");             
-                       if( childAdded )
-                               deps = childs.toString();
-               }
-               
-               //operation string
-               if( gnode instanceof GDFLoopNode ) //LOOP NODES
-               {
-                       GDFLoopNode lgnode = (GDFLoopNode) gnode;
-                       String offset2 = createOffset(level+1);
-                       sb.append(lgnode.explain(deps)+"\n"); //loop header
-                       sb.append(offset2+"PRED:\n");
-                       
sb.append(explainGDFNode(lgnode.getLoopPredicate(),level+2, memo));
-                       sb.append(offset2+"BODY:\n");
-                       //note: memo table and already done child explain 
prevents redundancy
-                       for( Entry<String,GDFNode> root : 
lgnode.getLoopOutputs().entrySet() ) {
-                               sb.append(explainGDFNode(root.getValue(), 
level+2, memo));
-                       }
-               }
-               else //GENERAL CASE (BASIC/CROSSBLOCK NODES)
-               {
-                       sb.append(gnode.explain(deps));
-                       sb.append('\n');
-               }
-               
-               /*
-               //matrix characteristics
-               sb.append(" [" + hop.getDim1() + "," 
-                              + hop.getDim2() + "," 
-                                      + hop.getRowsInBlock() + "," 
-                              + hop.getColsInBlock() + "," 
-                                      + hop.getNnz() + "]");
-               
-               //memory estimates
-               sb.append(" [" + showMem(hop.getInputMemEstimate(), false) + 
"," 
-                              + showMem(hop.getIntermediateMemEstimate(), 
false) + "," 
-                                      + showMem(hop.getOutputMemEstimate(), 
false) + " -> " 
-                              + showMem(hop.getMemEstimate(), true) + "]");
-               
-               //exec type
-               if (hop.getExecType() != null)
-                       sb.append(", " + hop.getExecType());
-               */
-               
-               
-               //memoization
-               memo.add(gnode.getID());
-               
-               return sb.toString();
-       }
-       
-       
        //////////////
        // internal explain RUNTIME
 

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOLinregCG.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOLinregCG.java
 
b/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOLinregCG.java
deleted file mode 100644
index af5be94..0000000
--- 
a/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOLinregCG.java
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- * 
- *   http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-package org.apache.sysml.test.integration.functions.gdfo;
-
-import java.io.File;
-import java.util.HashMap;
-
-import org.junit.Test;
-import org.apache.sysml.api.DMLScript;
-import org.apache.sysml.api.DMLScript.RUNTIME_PLATFORM;
-import org.apache.sysml.lops.LopProperties.ExecType;
-import org.apache.sysml.runtime.matrix.data.MatrixValue.CellIndex;
-import org.apache.sysml.test.integration.AutomatedTestBase;
-import org.apache.sysml.test.integration.TestConfiguration;
-import org.apache.sysml.test.utils.TestUtils;
-
-/**
- * 
- */
-public class GDFOLinregCG extends AutomatedTestBase 
-{
-       
-       private final static String TEST_NAME1 = "LinregCG";
-       private final static String TEST_DIR = "functions/gdfo/";
-       private final static String TEST_CLASS_DIR = TEST_DIR + 
GDFOLinregCG.class.getSimpleName() + "/";
-       private final static String TEST_CONF = "SystemML-config-globalopt.xml";
-       private final static File   TEST_CONF_FILE = new File(SCRIPT_DIR + 
TEST_DIR, TEST_CONF);
-       
-       private final static double eps = 1e-5;
-       
-       private final static int rows = 1468;
-       private final static int cols = 1007;
-               
-       private final static double sparsity1 = 0.7; //dense
-       private final static double sparsity2 = 0.1; //sparse
-       
-       private final static int intercept = 0;
-       private final static double epsilon = 0.000000001;
-       private final static double maxiter = 10;
-       
-       @Override
-       public void setUp() 
-       {
-               TestUtils.clearAssertionInformation();
-               addTestConfiguration(TEST_NAME1, new 
TestConfiguration(TEST_CLASS_DIR, TEST_NAME1, new String[] { "w" })); 
-       }
-
-       @Test
-       public void testGDFOLinregCGDenseCP() 
-       {
-               runGDFOTest(TEST_NAME1, false, ExecType.CP);
-       }
-       
-       @Test
-       public void testGDFOLinregCGSparseCP() 
-       {
-               runGDFOTest(TEST_NAME1, true, ExecType.CP);
-       }
-       
-       /*
-       @Test
-       public void testGDFOLinregCGDenseMR() 
-       {
-               runGDFOTest(TEST_NAME1, false, ExecType.MR);
-       }
-       
-       @Test
-       public void testGDFOLinregCGSparseMR() 
-       {
-               runGDFOTest(TEST_NAME1, true, ExecType.MR);
-       }
-       
-       @Test
-       public void testGDFOLinregCGDenseSP() 
-       {
-               runGDFOTest(TEST_NAME1, false, ExecType.SPARK);
-       }
-       
-       @Test
-       public void testGDFOLinregCGSparseSP() 
-       {
-               runGDFOTest(TEST_NAME1, true, ExecType.SPARK);
-       }
-       */
-       
-       /**
-        * 
-        * @param sparseM1
-        * @param sparseM2
-        * @param instType
-        */
-       private void runGDFOTest( String testname,boolean sparse, ExecType 
instType)
-       {
-               //rtplatform for MR
-               RUNTIME_PLATFORM platformOld = rtplatform;
-               switch( instType ){
-                       case MR: rtplatform = RUNTIME_PLATFORM.HADOOP; break;
-                       case SPARK: rtplatform = RUNTIME_PLATFORM.SPARK; break;
-                       default: rtplatform = RUNTIME_PLATFORM.HYBRID; break;
-               }
-       
-               boolean sparkConfigOld = DMLScript.USE_LOCAL_SPARK_CONFIG;
-               if( rtplatform == RUNTIME_PLATFORM.SPARK )
-                       DMLScript.USE_LOCAL_SPARK_CONFIG = true;
-
-               try
-               {
-                       String TEST_NAME = testname;
-                       TestConfiguration config = 
getTestConfiguration(TEST_NAME);
-                       loadTestConfiguration(config);
-                       
-                       /* This is for running the junit test the new way, 
i.e., construct the arguments directly */
-                       String HOME = SCRIPT_DIR + TEST_DIR;
-                       fullDMLScriptName = HOME + TEST_NAME + ".dml";
-                       programArgs = new String[]{ "-explain", //"hops",
-                               "-args", input("X"), input("y"),
-                               String.valueOf(intercept), 
String.valueOf(epsilon),
-                               String.valueOf(maxiter), output("w")};
-
-                       rCmd = getRCmd(inputDir(), 
String.valueOf(intercept),String.valueOf(epsilon),
-                               String.valueOf(maxiter), expectedDir());
-       
-                       //generate actual datasets
-                       double[][] X = getRandomMatrix(rows, cols, 0, 1, 
sparse?sparsity2:sparsity1, 7);
-                       writeInputMatrixWithMTD("X", X, true);
-                       double[][] y = getRandomMatrix(rows, 1, 0, 10, 1.0, 3);
-                       writeInputMatrixWithMTD("y", y, true);
-                       
-                       runTest(true, false, null, -1); 
-                       runRScript(true); 
-                       
-                       //compare matrices 
-                       HashMap<CellIndex, Double> dmlfile = 
readDMLMatrixFromHDFS("w");
-                       HashMap<CellIndex, Double> rfile  = 
readRMatrixFromFS("w");
-                       TestUtils.compareMatrices(dmlfile, rfile, eps, 
"Stat-DML", "Stat-R");
-               }
-               finally
-               {
-                       rtplatform = platformOld;
-                       DMLScript.USE_LOCAL_SPARK_CONFIG = sparkConfigOld;
-               }
-       }
-
-       /**
-        * Override default configuration with custom test configuration to 
ensure
-        * scratch space and local temporary directory locations are also 
updated.
-        */
-       @Override
-       protected File getConfigTemplateFile() {
-               // Instrumentation in this test's output log to show custom 
configuration file used for template.
-               System.out.println("This test case overrides default 
configuration with " + TEST_CONF_FILE.getPath());
-               return TEST_CONF_FILE;
-       }
-}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOLinregDS.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOLinregDS.java
 
b/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOLinregDS.java
deleted file mode 100644
index 61abfea..0000000
--- 
a/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOLinregDS.java
+++ /dev/null
@@ -1,166 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- * 
- *   http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-package org.apache.sysml.test.integration.functions.gdfo;
-
-import java.io.File;
-import java.util.HashMap;
-
-import org.junit.Test;
-import org.apache.sysml.api.DMLScript;
-import org.apache.sysml.api.DMLScript.RUNTIME_PLATFORM;
-import org.apache.sysml.lops.LopProperties.ExecType;
-import org.apache.sysml.runtime.matrix.data.MatrixValue.CellIndex;
-import org.apache.sysml.test.integration.AutomatedTestBase;
-import org.apache.sysml.test.integration.TestConfiguration;
-import org.apache.sysml.test.utils.TestUtils;
-
-/**
- * 
- */
-public class GDFOLinregDS extends AutomatedTestBase 
-{
-       
-       private final static String TEST_NAME1 = "LinregDS";
-       private final static String TEST_DIR = "functions/gdfo/";
-       private final static String TEST_CLASS_DIR = TEST_DIR + 
GDFOLinregDS.class.getSimpleName() + "/";
-       private final static String TEST_CONF = "SystemML-config-globalopt.xml";
-       private final static File   TEST_CONF_FILE = new File(SCRIPT_DIR + 
TEST_DIR, TEST_CONF);
-       
-       private final static double eps = 1e-8;
-       
-       private final static int rows = 1468;
-       private final static int cols = 1007;
-               
-       private final static double sparsity1 = 0.7; //dense
-       private final static double sparsity2 = 0.1; //sparse
-       
-       private final static int intercept = 0;
-       private final static double lambda = 0.01;
-       
-       @Override
-       public void setUp() 
-       {
-               TestUtils.clearAssertionInformation();
-               addTestConfiguration(TEST_NAME1, new 
TestConfiguration(TEST_CLASS_DIR, TEST_NAME1, new String[] { "B" })); 
-       }
-
-       @Test
-       public void testGDFOLinregDSDenseCP() 
-       {
-               runGDFOTest(TEST_NAME1, false, ExecType.CP);
-       }
-       
-       @Test
-       public void testGDFOLinregDSSparseCP() 
-       {
-               runGDFOTest(TEST_NAME1, true, ExecType.CP);
-       }
-
-       @Test
-       public void testGDFOLinregDSDenseMR() 
-       {
-               runGDFOTest(TEST_NAME1, false, ExecType.MR);
-       }
-
-       @Test
-       public void testGDFOLinregDSSparseMR() 
-       {
-               runGDFOTest(TEST_NAME1, true, ExecType.MR);
-       }
-       
-       @Test
-       public void testGDFOLinregDSDenseSP() 
-       {
-               runGDFOTest(TEST_NAME1, false, ExecType.SPARK);
-       }
-       
-       @Test
-       public void testGDFOLinregDSSparseSP() 
-       {
-               runGDFOTest(TEST_NAME1, true, ExecType.SPARK);
-       }
-       
-       /**
-        * 
-        * @param sparseM1
-        * @param sparseM2
-        * @param instType
-        */
-       private void runGDFOTest( String testname,boolean sparse, ExecType 
instType)
-       {
-               //rtplatform for MR
-               RUNTIME_PLATFORM platformOld = rtplatform;
-               switch( instType ){
-                       case MR: rtplatform = RUNTIME_PLATFORM.HADOOP; break;
-                       case SPARK: rtplatform = RUNTIME_PLATFORM.SPARK; break;
-                       default: rtplatform = RUNTIME_PLATFORM.HYBRID; break;
-               }
-       
-               boolean sparkConfigOld = DMLScript.USE_LOCAL_SPARK_CONFIG;
-               if( rtplatform == RUNTIME_PLATFORM.SPARK )
-                       DMLScript.USE_LOCAL_SPARK_CONFIG = true;
-
-               try
-               {
-                       String TEST_NAME = testname;
-                       TestConfiguration config = 
getTestConfiguration(TEST_NAME);
-                       loadTestConfiguration(config);
-                       
-                       /* This is for running the junit test the new way, 
i.e., construct the arguments directly */
-                       String HOME = SCRIPT_DIR + TEST_DIR;
-                       fullDMLScriptName = HOME + TEST_NAME + ".dml";
-                       programArgs = new String[]{ "-explain","hops",
-                               "-args", input("X"), input("y"),
-                               String.valueOf(intercept), 
String.valueOf(lambda), output("B")};
-
-                       rCmd = getRCmd(inputDir(), String.valueOf(intercept), 
String.valueOf(lambda), expectedDir());
-       
-                       //generate actual datasets
-                       double[][] X = getRandomMatrix(rows, cols, 0, 1, 
sparse?sparsity2:sparsity1, 7);
-                       writeInputMatrixWithMTD("X", X, true);
-                       double[][] y = getRandomMatrix(rows, 1, 0, 10, 1.0, 3);
-                       writeInputMatrixWithMTD("y", y, true);
-                       
-                       runTest(true, false, null, -1); 
-                       runRScript(true); 
-                       
-                       //compare matrices 
-                       HashMap<CellIndex, Double> dmlfile = 
readDMLMatrixFromHDFS("B");
-                       HashMap<CellIndex, Double> rfile  = 
readRMatrixFromFS("B");
-                       TestUtils.compareMatrices(dmlfile, rfile, eps, 
"Stat-DML", "Stat-R");
-               }
-               finally
-               {
-                       rtplatform = platformOld;
-                       DMLScript.USE_LOCAL_SPARK_CONFIG = sparkConfigOld;
-               }
-       }
-
-       /**
-        * Override default configuration with custom test configuration to 
ensure
-        * scratch space and local temporary directory locations are also 
updated.
-        */
-       @Override
-       protected File getConfigTemplateFile() {
-               // Instrumentation in this test's output log to show custom 
configuration file used for template.
-               System.out.println("This test case overrides default 
configuration with " + TEST_CONF_FILE.getPath());
-               return TEST_CONF_FILE;
-       }
-}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOLinregDSsimpl.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOLinregDSsimpl.java
 
b/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOLinregDSsimpl.java
deleted file mode 100644
index f095844..0000000
--- 
a/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOLinregDSsimpl.java
+++ /dev/null
@@ -1,166 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- * 
- *   http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-package org.apache.sysml.test.integration.functions.gdfo;
-
-import java.io.File;
-import java.util.HashMap;
-
-import org.junit.Test;
-import org.apache.sysml.api.DMLScript;
-import org.apache.sysml.api.DMLScript.RUNTIME_PLATFORM;
-import org.apache.sysml.lops.LopProperties.ExecType;
-import org.apache.sysml.runtime.matrix.data.MatrixValue.CellIndex;
-import org.apache.sysml.test.integration.AutomatedTestBase;
-import org.apache.sysml.test.integration.TestConfiguration;
-import org.apache.sysml.test.utils.TestUtils;
-
-/**
- * 
- */
-public class GDFOLinregDSsimpl extends AutomatedTestBase 
-{
-       
-       private final static String TEST_NAME1 = "LinregDSsimpl";
-       private final static String TEST_DIR = "functions/gdfo/";
-       private final static String TEST_CLASS_DIR = TEST_DIR + 
GDFOLinregDSsimpl.class.getSimpleName() + "/";
-       private final static String TEST_CONF = "SystemML-config-globalopt.xml";
-       private final static File   TEST_CONF_FILE = new File(SCRIPT_DIR + 
TEST_DIR, TEST_CONF);
-       
-       private final static double eps = 1e-8;
-       
-       private final static int rows = 1468;
-       private final static int cols = 1007;
-               
-       private final static double sparsity1 = 0.7; //dense
-       private final static double sparsity2 = 0.1; //sparse
-       
-       private final static int intercept = 0;
-       private final static double lambda = 0.01;
-       
-       @Override
-       public void setUp() 
-       {
-               TestUtils.clearAssertionInformation();
-               addTestConfiguration(TEST_NAME1, new 
TestConfiguration(TEST_CLASS_DIR, TEST_NAME1, new String[] { "B" })); 
-       }
-
-       @Test
-       public void testGDFOLinregDSDenseCP() 
-       {
-               runGDFOTest(TEST_NAME1, false, ExecType.CP);
-       }
-       
-       @Test
-       public void testGDFOLinregDSSparseCP() 
-       {
-               runGDFOTest(TEST_NAME1, true, ExecType.CP);
-       }
-
-       @Test
-       public void testGDFOLinregDSDenseMR() 
-       {
-               runGDFOTest(TEST_NAME1, false, ExecType.MR);
-       }
-
-       @Test
-       public void testGDFOLinregDSSparseMR() 
-       {
-               runGDFOTest(TEST_NAME1, true, ExecType.MR);
-       }
-       
-       @Test
-       public void testGDFOLinregDSDenseSP() 
-       {
-               runGDFOTest(TEST_NAME1, false, ExecType.SPARK);
-       }
-       
-       @Test
-       public void testGDFOLinregDSSparseSP() 
-       {
-               runGDFOTest(TEST_NAME1, true, ExecType.SPARK);
-       }
-       
-       /**
-        * 
-        * @param sparseM1
-        * @param sparseM2
-        * @param instType
-        */
-       private void runGDFOTest( String testname,boolean sparse, ExecType 
instType)
-       {
-               //rtplatform for MR
-               RUNTIME_PLATFORM platformOld = rtplatform;
-               switch( instType ){
-                       case MR: rtplatform = RUNTIME_PLATFORM.HADOOP; break;
-                       case SPARK: rtplatform = RUNTIME_PLATFORM.SPARK; break;
-                       default: rtplatform = RUNTIME_PLATFORM.HYBRID; break;
-               }
-       
-               boolean sparkConfigOld = DMLScript.USE_LOCAL_SPARK_CONFIG;
-               if( rtplatform == RUNTIME_PLATFORM.SPARK )
-                       DMLScript.USE_LOCAL_SPARK_CONFIG = true;
-
-               try
-               {
-                       String TEST_NAME = testname;
-                       TestConfiguration config = 
getTestConfiguration(TEST_NAME);
-                       loadTestConfiguration(config);
-                       
-                       /* This is for running the junit test the new way, 
i.e., construct the arguments directly */
-                       String HOME = SCRIPT_DIR + TEST_DIR;
-                       fullDMLScriptName = HOME + TEST_NAME + ".dml";
-                       programArgs = new String[]{ "-explain","hops",
-                               "-args", input("X"), input("y"),
-                               String.valueOf(intercept), 
String.valueOf(lambda), output("B")};
-
-                       rCmd = getRCmd(inputDir(), String.valueOf(intercept), 
String.valueOf(lambda), expectedDir());
-       
-                       //generate actual datasets
-                       double[][] X = getRandomMatrix(rows, cols, 0, 1, 
sparse?sparsity2:sparsity1, 7);
-                       writeInputMatrixWithMTD("X", X, true);
-                       double[][] y = getRandomMatrix(rows, 1, 0, 10, 1.0, 3);
-                       writeInputMatrixWithMTD("y", y, true);
-                       
-                       runTest(true, false, null, -1); 
-                       runRScript(true); 
-                       
-                       //compare matrices 
-                       HashMap<CellIndex, Double> dmlfile = 
readDMLMatrixFromHDFS("B");
-                       HashMap<CellIndex, Double> rfile  = 
readRMatrixFromFS("B");
-                       TestUtils.compareMatrices(dmlfile, rfile, eps, 
"Stat-DML", "Stat-R");
-               }
-               finally
-               {
-                       rtplatform = platformOld;
-                       DMLScript.USE_LOCAL_SPARK_CONFIG = sparkConfigOld;
-               }
-       }
-
-       /**
-        * Override default configuration with custom test configuration to 
ensure
-        * scratch space and local temporary directory locations are also 
updated.
-        */
-       @Override
-       protected File getConfigTemplateFile() {
-               // Instrumentation in this test's output log to show custom 
configuration file used for template.
-               System.out.println("This test case overrides default 
configuration with " + TEST_CONF_FILE.getPath());
-               return TEST_CONF_FILE;
-       }
-}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOMMChainLoop.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOMMChainLoop.java
 
b/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOMMChainLoop.java
deleted file mode 100644
index 7f29b9a..0000000
--- 
a/src/test/java/org/apache/sysml/test/integration/functions/gdfo/GDFOMMChainLoop.java
+++ /dev/null
@@ -1,132 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- * 
- *   http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-package org.apache.sysml.test.integration.functions.gdfo;
-
-import java.io.File;
-import java.util.HashMap;
-
-import org.junit.Test;
-import org.apache.sysml.api.DMLScript.RUNTIME_PLATFORM;
-import org.apache.sysml.lops.LopProperties.ExecType;
-import org.apache.sysml.runtime.matrix.data.MatrixValue.CellIndex;
-import org.apache.sysml.test.integration.AutomatedTestBase;
-import org.apache.sysml.test.integration.TestConfiguration;
-import org.apache.sysml.test.utils.TestUtils;
-
-/**
- * 
- */
-public class GDFOMMChainLoop extends AutomatedTestBase 
-{
-       
-       private final static String TEST_NAME1 = "MMChainLoop";
-       private final static String TEST_DIR = "functions/gdfo/";
-       private final static String TEST_CLASS_DIR = TEST_DIR + 
GDFOMMChainLoop.class.getSimpleName() + "/";
-       private final static String TEST_CONF = "SystemML-config-globalopt.xml";
-       private final static File   TEST_CONF_FILE = new File(SCRIPT_DIR + 
TEST_DIR, TEST_CONF);
-       
-       private final static double eps = 1e-10;
-       
-       private final static int rows = 1468;
-       private final static int cols = 1007;
-               
-       private final static double sparsity1 = 0.7; //dense
-       private final static double sparsity2 = 0.1; //sparse
-       
-       private final static double maxiter = 10;
-       
-       @Override
-       public void setUp() 
-       {
-               TestUtils.clearAssertionInformation();
-               addTestConfiguration(TEST_NAME1, new 
TestConfiguration(TEST_CLASS_DIR, TEST_NAME1, new String[] { "w" })); 
-       }
-
-       @Test
-       public void testMMChainLoopDenseCP() 
-       {
-               runGDFOTest(TEST_NAME1, false, ExecType.CP);
-       }
-       
-       @Test
-       public void testMMChainLoopSparseCP() 
-       {
-               runGDFOTest(TEST_NAME1, true, ExecType.CP);
-       }
-       
-       /**
-        * 
-        * @param sparseM1
-        * @param sparseM2
-        * @param instType
-        */
-       private void runGDFOTest( String testname,boolean sparse, ExecType 
instType)
-       {
-               //rtplatform for MR
-               RUNTIME_PLATFORM platformOld = rtplatform;
-               rtplatform = (instType==ExecType.MR) ? RUNTIME_PLATFORM.HADOOP 
: RUNTIME_PLATFORM.HYBRID;
-
-               try
-               {
-                       String TEST_NAME = testname;
-                       TestConfiguration config = 
getTestConfiguration(TEST_NAME);
-                       loadTestConfiguration(config);
-                       
-                       /* This is for running the junit test the new way, 
i.e., construct the arguments directly */
-                       String HOME = SCRIPT_DIR + TEST_DIR;
-                       fullDMLScriptName = HOME + TEST_NAME + ".dml";
-                       programArgs = new String[]{ "-explain", //"hops",
-                               "-args", input("X"), input("v"),
-                               String.valueOf(maxiter), output("w")};
-                       
-                       rCmd = getRCmd(inputDir(), String.valueOf(maxiter), 
expectedDir());
-       
-                       //generate actual datasets
-                       double[][] X = getRandomMatrix(rows, cols, 0, 1, 
sparse?sparsity2:sparsity1, 7);
-                       writeInputMatrixWithMTD("X", X, true);
-                       double[][] y = getRandomMatrix(cols, 1, 0, 1, 1.0, 3);
-                       writeInputMatrixWithMTD("v", y, true);
-                       
-                       runTest(true, false, null, -1); 
-                       runRScript(true); 
-                       
-                       //compare matrices
-                       HashMap<CellIndex, Double> dmlfile = 
readDMLMatrixFromHDFS("w");
-                       HashMap<CellIndex, Double> rfile  = 
readRMatrixFromFS("w");
-                       double absEps = rfile.get(new 
CellIndex(1,1)).doubleValue() * eps;
-                       TestUtils.compareMatrices(dmlfile, rfile, absEps, 
"Stat-DML", "Stat-R");
-               }
-               finally
-               {
-                       rtplatform = platformOld;
-               }
-       }
-
-       /**
-        * Override default configuration with custom test configuration to 
ensure
-        * scratch space and local temporary directory locations are also 
updated.
-        */
-       @Override
-       protected File getConfigTemplateFile() {
-               // Instrumentation in this test's output log to show custom 
configuration file used for template.
-               System.out.println("This test case overrides default 
configuration with " + TEST_CONF_FILE.getPath());
-               return TEST_CONF_FILE;
-       }
-}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/java/org/apache/sysml/test/integration/functions/gdfo/HashInterestingPropertiesTest.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/sysml/test/integration/functions/gdfo/HashInterestingPropertiesTest.java
 
b/src/test/java/org/apache/sysml/test/integration/functions/gdfo/HashInterestingPropertiesTest.java
deleted file mode 100644
index 50b34dd..0000000
--- 
a/src/test/java/org/apache/sysml/test/integration/functions/gdfo/HashInterestingPropertiesTest.java
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- * 
- *   http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-package org.apache.sysml.test.integration.functions.gdfo;
-
-
-import org.junit.Assert;
-import org.junit.Test;
-
-import org.apache.sysml.hops.globalopt.InterestingProperties;
-import org.apache.sysml.hops.globalopt.InterestingProperties.Format;
-import org.apache.sysml.hops.globalopt.InterestingProperties.Location;
-import org.apache.sysml.hops.globalopt.InterestingProperties.Partitioning;
-import org.apache.sysml.test.integration.AutomatedTestBase;
-import org.apache.sysml.test.utils.TestUtils;
-
-public class HashInterestingPropertiesTest extends AutomatedTestBase
-{
-       
-       @Override
-       public void setUp() 
-       {
-               TestUtils.clearAssertionInformation();
-       }
-
-       @Test
-       public void testCopyEquivalence()
-       {
-               InterestingProperties ips1 = new InterestingProperties(1000, 
Format.BINARY_BLOCK, Location.MEM, Partitioning.NONE, 1, true);
-               InterestingProperties ips2 = new InterestingProperties(ips1);
-               InterestingProperties ips3 = new InterestingProperties(ips2);
-               
-               //test hash functions
-               Assert.assertEquals(ips1.hashCode(), ips2.hashCode());
-               Assert.assertEquals(ips2.hashCode(), ips3.hashCode());
-               
-               //test equals (used inside hash maps)
-               Assert.assertTrue(ips1.equals(ips2));
-               Assert.assertTrue(ips2.equals(ips3));
-       }
-       
-       @Test
-       public void testValueEquivalence()
-       {
-               InterestingProperties ips1 = new InterestingProperties(1000, 
Format.BINARY_BLOCK, Location.MEM, Partitioning.NONE, 1, true);
-               InterestingProperties ips2 = new InterestingProperties(1000, 
Format.BINARY_BLOCK, Location.MEM, Partitioning.NONE, 1, true);
-               InterestingProperties ips3 = new InterestingProperties(2000, 
Format.BINARY_BLOCK, Location.MEM, Partitioning.NONE, 1, true);
-               InterestingProperties ips4 = new InterestingProperties(1000, 
Format.TEXT_CELL, Location.MEM, Partitioning.NONE, 1, true);
-               InterestingProperties ips5 = new InterestingProperties(1000, 
Format.BINARY_BLOCK, Location.HDFS, Partitioning.NONE, 1, true);
-               InterestingProperties ips6 = new InterestingProperties(1000, 
Format.BINARY_BLOCK, Location.MEM, Partitioning.COL_WISE, 1, true);
-               InterestingProperties ips7 = new InterestingProperties(1000, 
Format.BINARY_BLOCK, Location.MEM, Partitioning.NONE, 1, false);
-               
-               //test hash functions
-               Assert.assertEquals(ips1.hashCode(), ips2.hashCode());
-               
-               //test equals (used inside hash maps)
-               Assert.assertTrue(ips1.equals(ips2));
-               Assert.assertFalse(ips2.equals(ips3));
-               Assert.assertFalse(ips2.equals(ips4));
-               Assert.assertFalse(ips2.equals(ips5));
-               Assert.assertFalse(ips2.equals(ips6));
-               Assert.assertFalse(ips2.equals(ips7));
-       }
-       
-       @Test
-       public void testValueEquivalenceWithNull()
-       {
-               InterestingProperties ips1 = new InterestingProperties(1000, 
Format.BINARY_BLOCK, Location.MEM, Partitioning.NONE, 1, true);
-               InterestingProperties ips2 = new InterestingProperties(1000, 
null, Location.MEM, Partitioning.NONE, 1, true);
-               InterestingProperties ips3 = new InterestingProperties(1000, 
Format.BINARY_BLOCK, null, Partitioning.NONE, 1, true);
-               InterestingProperties ips4 = new InterestingProperties(1000, 
Format.BINARY_BLOCK, Location.MEM, null, 1, true);
-               InterestingProperties ips5 = new InterestingProperties(1000, 
Format.ANY, Location.MEM, Partitioning.NONE, 1, true);
-               
-               //test equals (used inside hash maps)
-               Assert.assertFalse(ips1.equals(ips2));
-               Assert.assertFalse(ips1.equals(ips3));
-               Assert.assertFalse(ips1.equals(ips4));
-               Assert.assertFalse(ips1.equals(ips5));
-       }
-}

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/java/org/apache/sysml/test/integration/mlcontext/MLContextTest.java
----------------------------------------------------------------------
diff --git 
a/src/test/java/org/apache/sysml/test/integration/mlcontext/MLContextTest.java 
b/src/test/java/org/apache/sysml/test/integration/mlcontext/MLContextTest.java
index a6b2ea2..39b9652 100644
--- 
a/src/test/java/org/apache/sysml/test/integration/mlcontext/MLContextTest.java
+++ 
b/src/test/java/org/apache/sysml/test/integration/mlcontext/MLContextTest.java
@@ -407,11 +407,8 @@ public class MLContextTest extends MLContextTestBase {
                Script script = new Script("print('" + testString + "');", 
org.apache.sysml.api.mlcontext.ScriptType.DML);
 
                ScriptExecutor scriptExecutor = new ScriptExecutor() {
-                       // turn off global data flow optimization check
                        @Override
-                       protected void globalDataFlowOptimization() {
-                               return;
-                       }
+                       protected void showExplanation() {}
                };
                ml.execute(script, scriptExecutor);
        }
@@ -424,11 +421,8 @@ public class MLContextTest extends MLContextTestBase {
                Script script = new Script("print('" + testString + "')", 
org.apache.sysml.api.mlcontext.ScriptType.PYDML);
 
                ScriptExecutor scriptExecutor = new ScriptExecutor() {
-                       // turn off global data flow optimization check
                        @Override
-                       protected void globalDataFlowOptimization() {
-                               return;
-                       }
+                       protected void showExplanation() {}
                };
                ml.execute(script, scriptExecutor);
        }

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/scripts/functions/gdfo/LinregCG.R
----------------------------------------------------------------------
diff --git a/src/test/scripts/functions/gdfo/LinregCG.R 
b/src/test/scripts/functions/gdfo/LinregCG.R
deleted file mode 100644
index 5dcad95..0000000
--- a/src/test/scripts/functions/gdfo/LinregCG.R
+++ /dev/null
@@ -1,57 +0,0 @@
-#-------------------------------------------------------------
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-# 
-#   http://www.apache.org/licenses/LICENSE-2.0
-# 
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-#-------------------------------------------------------------
-
-
-args <- commandArgs(TRUE)
-options(digits=22)
-library("Matrix")
-
-X = readMM(paste(args[1], "X.mtx", sep=""))
-y = readMM(paste(args[1], "y.mtx", sep=""))
-
-intercept = as.integer(args[2]);
-eps = as.double(args[3]);
-maxiter = as.double(args[4]);
-
-if( intercept == 1 ){
-   ones = matrix(1, nrow(X), 1); 
-   X = cbind(X, ones);
-}
-
-r = -(t(X) %*% y);
-p = -r;
-norm_r2 = sum(r * r);
-w = matrix(0, ncol(X), 1);
-
-i = 0;
-while(i < maxiter) {
-       q = ((t(X) %*% (X %*% p)) + eps  * p);
-       alpha = norm_r2 / ((t(p) %*% q)[1:1]);
-       w = w + alpha * p;
-       old_norm_r2 = norm_r2;
-       r = r + alpha * q;
-       norm_r2 = sum(r * r);
-       beta = norm_r2 / old_norm_r2;
-       p = -r + beta * p;
-       i = i + 1;
-}
-
-writeMM(as(w,"CsparseMatrix"), paste(args[5], "w", sep=""))

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/scripts/functions/gdfo/LinregCG.dml
----------------------------------------------------------------------
diff --git a/src/test/scripts/functions/gdfo/LinregCG.dml 
b/src/test/scripts/functions/gdfo/LinregCG.dml
deleted file mode 100644
index 01dcae7..0000000
--- a/src/test/scripts/functions/gdfo/LinregCG.dml
+++ /dev/null
@@ -1,56 +0,0 @@
-#-------------------------------------------------------------
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-# 
-#   http://www.apache.org/licenses/LICENSE-2.0
-# 
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-#-------------------------------------------------------------
-
-
-X = read($1);
-y = read($2);
-intercept = $3;
-eps = $4;
-maxiter = $5;
-
-if( intercept == 1 ){
-   ones = matrix(1, nrow(X), 1); 
-   X = cbind(X, ones);
-}
-
-r = -(t(X) %*% y);
-p = -r;
-norm_r2 = sum(r * r);
-w = matrix(0, rows = ncol(X), cols = 1);
-
-i = 0;
-while(i < maxiter) {
-       q = ((t(X) %*% (X %*% p)) + eps  * p);
-       alpha = norm_r2 / as.scalar(t(p) %*% q);
-       w = w + alpha * p;
-       old_norm_r2 = norm_r2;
-       r = r + alpha * q;
-       norm_r2 = sum(r * r);
-       beta = norm_r2 / old_norm_r2;
-       p = -r + beta * p;
-       i = i + 1;
-}
-
-write(w, $6);
-
-
-
-

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/scripts/functions/gdfo/LinregDS.R
----------------------------------------------------------------------
diff --git a/src/test/scripts/functions/gdfo/LinregDS.R 
b/src/test/scripts/functions/gdfo/LinregDS.R
deleted file mode 100644
index 752e862..0000000
--- a/src/test/scripts/functions/gdfo/LinregDS.R
+++ /dev/null
@@ -1,43 +0,0 @@
-#-------------------------------------------------------------
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-# 
-#   http://www.apache.org/licenses/LICENSE-2.0
-# 
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-#-------------------------------------------------------------
-
-
-args <- commandArgs(TRUE)
-options(digits=22)
-library("Matrix")
-
-X = as.matrix(readMM(paste(args[1], "X.mtx", sep="")))
-y = as.matrix(readMM(paste(args[1], "y.mtx", sep="")))
-I = as.vector(matrix(1, ncol(X), 1));
-intercept = as.integer(args[2])
-lambda = as.double(args[3]);
-
-if( intercept == 1 ){
-   ones = matrix(1, nrow(X), 1); 
-   X = cbind(X, ones);
-   I = as.vector(matrix(1, ncol(X), 1));
-}
-
-A = t(X) %*% X + diag(I)*lambda;
-b = t(X) %*% y;
-beta = solve(A, b);
-
-writeMM(as(beta,"CsparseMatrix"), paste(args[4], "B", sep=""))
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/scripts/functions/gdfo/LinregDS.dml
----------------------------------------------------------------------
diff --git a/src/test/scripts/functions/gdfo/LinregDS.dml 
b/src/test/scripts/functions/gdfo/LinregDS.dml
deleted file mode 100644
index a985340..0000000
--- a/src/test/scripts/functions/gdfo/LinregDS.dml
+++ /dev/null
@@ -1,39 +0,0 @@
-#-------------------------------------------------------------
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-# 
-#   http://www.apache.org/licenses/LICENSE-2.0
-# 
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-#-------------------------------------------------------------
-
-
-X = read($1);
-y = read($2);
-I = matrix(1, ncol(X), 1);
-intercept = $3;
-lambda = $4;
-
-if( intercept == 1 ){
-   ones = matrix(1, nrow(X), 1); 
-   X = cbind(X, ones);
-   I = matrix(1, ncol(X), 1);
-}
-
-A = t(X) %*% X + diag(I)*lambda;
-b = t(X) %*% y;
-beta = solve(A, b);
-
-write(beta, $5);

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/scripts/functions/gdfo/LinregDSsimpl.R
----------------------------------------------------------------------
diff --git a/src/test/scripts/functions/gdfo/LinregDSsimpl.R 
b/src/test/scripts/functions/gdfo/LinregDSsimpl.R
deleted file mode 100644
index 5b90875..0000000
--- a/src/test/scripts/functions/gdfo/LinregDSsimpl.R
+++ /dev/null
@@ -1,35 +0,0 @@
-#-------------------------------------------------------------
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-# 
-#   http://www.apache.org/licenses/LICENSE-2.0
-# 
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-#-------------------------------------------------------------
-
-
-args <- commandArgs(TRUE)
-options(digits=22)
-library("Matrix")
-
-X = as.matrix(readMM(paste(args[1], "X.mtx", sep="")))
-y = as.matrix(readMM(paste(args[1], "y.mtx", sep="")))
-I = as.vector(matrix(1, ncol(X), 1));
-lambda = as.double(args[3]);
-A = t(X) %*% X + diag(I)*lambda;
-b = t(X) %*% y;
-beta = solve(A, b);
-
-writeMM(as(beta,"CsparseMatrix"), paste(args[4], "B", sep=""))
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/scripts/functions/gdfo/LinregDSsimpl.dml
----------------------------------------------------------------------
diff --git a/src/test/scripts/functions/gdfo/LinregDSsimpl.dml 
b/src/test/scripts/functions/gdfo/LinregDSsimpl.dml
deleted file mode 100644
index 576d1ce..0000000
--- a/src/test/scripts/functions/gdfo/LinregDSsimpl.dml
+++ /dev/null
@@ -1,31 +0,0 @@
-#-------------------------------------------------------------
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-# 
-#   http://www.apache.org/licenses/LICENSE-2.0
-# 
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-#-------------------------------------------------------------
-
-
-X = read($1);
-y = read($2);
-I = matrix(1, ncol(X), 1);
-lambda = $4;
-A = t(X) %*% X + diag(I)*lambda;
-b = t(X) %*% y;
-beta = solve(A, b);
-
-write(beta, $5);

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/scripts/functions/gdfo/MMChainLoop.R
----------------------------------------------------------------------
diff --git a/src/test/scripts/functions/gdfo/MMChainLoop.R 
b/src/test/scripts/functions/gdfo/MMChainLoop.R
deleted file mode 100644
index e2177f7..0000000
--- a/src/test/scripts/functions/gdfo/MMChainLoop.R
+++ /dev/null
@@ -1,37 +0,0 @@
-#-------------------------------------------------------------
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-# 
-#   http://www.apache.org/licenses/LICENSE-2.0
-# 
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-#-------------------------------------------------------------
-
-
-args <- commandArgs(TRUE)
-options(digits=22)
-library("Matrix")
-
-X = readMM(paste(args[1], "X.mtx", sep=""))
-v = readMM(paste(args[1], "v.mtx", sep=""))
-maxiter = as.double(args[2]);
-
-i = 0;
-while(i < maxiter) {
-       v = t(X) %*% (X %*% v);
-       i = i + 1;
-}
-
-writeMM(as(v,"CsparseMatrix"), paste(args[3], "w", sep=""))

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/scripts/functions/gdfo/MMChainLoop.dml
----------------------------------------------------------------------
diff --git a/src/test/scripts/functions/gdfo/MMChainLoop.dml 
b/src/test/scripts/functions/gdfo/MMChainLoop.dml
deleted file mode 100644
index a68c79b..0000000
--- a/src/test/scripts/functions/gdfo/MMChainLoop.dml
+++ /dev/null
@@ -1,37 +0,0 @@
-#-------------------------------------------------------------
-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements.  See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership.  The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License.  You may obtain a copy of the License at
-# 
-#   http://www.apache.org/licenses/LICENSE-2.0
-# 
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied.  See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-#-------------------------------------------------------------
-
-
-X = read($1);
-v = read($2);
-maxiter = $3;
-
-i = 0;
-while(i < maxiter) {
-       v = t(X) %*% (X %*% v);
-       i = i + 1;
-}
-
-write(v, $4);
-
-
-
-

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test/scripts/functions/gdfo/SystemML-config-globalopt.xml
----------------------------------------------------------------------
diff --git a/src/test/scripts/functions/gdfo/SystemML-config-globalopt.xml 
b/src/test/scripts/functions/gdfo/SystemML-config-globalopt.xml
deleted file mode 100644
index 01c4c9a..0000000
--- a/src/test/scripts/functions/gdfo/SystemML-config-globalopt.xml
+++ /dev/null
@@ -1,26 +0,0 @@
-<!--
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- * 
- *   http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
--->
-
-<root>
-   <sysml.localtmpdir>/tmp/systemml</sysml.localtmpdir>
-   <sysml.scratch>scratch_space</sysml.scratch>
-   <sysml.optlevel>4</sysml.optlevel>
-   <!-- piggybacked test for custom mapred/mapreduce configurations -->
-   <mapreduce.task.io.sort.mb>50</mapreduce.task.io.sort.mb>
-</root>

http://git-wip-us.apache.org/repos/asf/systemml/blob/b3419b09/src/test_suites/java/org/apache/sysml/test/integration/functions/gdfo/ZPackageSuite.java
----------------------------------------------------------------------
diff --git 
a/src/test_suites/java/org/apache/sysml/test/integration/functions/gdfo/ZPackageSuite.java
 
b/src/test_suites/java/org/apache/sysml/test/integration/functions/gdfo/ZPackageSuite.java
deleted file mode 100644
index 074aec8..0000000
--- 
a/src/test_suites/java/org/apache/sysml/test/integration/functions/gdfo/ZPackageSuite.java
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- * 
- *   http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-package org.apache.sysml.test.integration.functions.gdfo;
-
-import org.junit.runner.RunWith;
-import org.junit.runners.Suite;
-
-/** Group together the tests in this package into a single suite so that the 
Maven build
- *  won't run two of them at once. */
-@RunWith(Suite.class)
[email protected]({
-       GDFOLinregCG.class,
-       GDFOLinregDS.class,
-       GDFOLinregDSsimpl.class,
-       GDFOMMChainLoop.class,
-       HashInterestingPropertiesTest.class
-})
-
-
-/** This class is just a holder for the above JUnit annotations. */
-public class ZPackageSuite {
-
-}

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