systemml git commit: [SYSTEMML-1978] Add PCA to Performance Test Suite

Repository: systemml Updated Branches: refs/heads/master bd139a575 -> d69686273 [SYSTEMML-1978] Add PCA to Performance Test Suite Closes #694 Project: http://git-wip-us.apache.org/repos/asf/systemml/repo Commit: http://git-wip-us.apache.org/repos/asf/systemml/commit/d6968627 Tree:

[1/4] systemml git commit: [MINOR] Performance createvar instruction, cleanup data handles

Repository: systemml Updated Branches: refs/heads/master d69686273 -> 6a11413b1 http://git-wip-us.apache.org/repos/asf/systemml/blob/ffefd8e6/src/main/java/org/apache/sysml/runtime/controlprogram/parfor/TaskPartitionerFixedsize.java

[2/4] systemml git commit: [MINOR] Performance createvar instruction, cleanup data handles

[MINOR] Performance createvar instruction, cleanup data handles This patch improves the performance of string concatenation for createvar instructions with unique filenames and removes the unnecessary variable name from all data objects (matrices, frames, scalars). Project:

[4/4] systemml git commit: [SYSTEMML-2009] Performance multi-threaded JMLC scoring (contention)

[SYSTEMML-2009] Performance multi-threaded JMLC scoring (contention) This patch makes a major performance improvement to multi-threaded JMLC scoring and script execution. For scripts with many small intermediates, concurrent JMLC prepared scripts were contended on sequence ID generators for

[3/4] systemml git commit: [SYSTEMML-1990] Generalized ctable rewrites (seq-table, const inputs)

[SYSTEMML-1990] Generalized ctable rewrites (seq-table, const inputs) This patch generalized the existing rewrite for table(seq(),X,...) to rexpand(X,...) to handle cases with unknown dimensions, including common scenarios with column indexing on X. Additionally, this patch also introduces a new