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| <h1>Apache SystemDS<sup id="trademark">™</sup> 0.10.0-incubating Release Notes</h1> |
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| <p>The <strong>Apache SystemML 0.10.0-incubating release</strong> was approved on June 3rd, 2016. It is the second release of Apache SystemML since it |
| became an incubator project on November 2nd, 2015. Extensive updates have been made to the project in several areas, as detailed |
| below.</p> |
| |
| <h3 id="different-types-of-spark-matrix-blocks">Different Types of Spark Matrix Blocks</h3> |
| <ul> |
| <li>Supported internal formats: MCSR (default), CSR, COO</li> |
| <li>Automatic MCSR➡CSR on Spark read/caching (for memory efficiency)</li> |
| <li>Automatic MCSR➡CSR on sparse update-in-place (avoid serialization)</li> |
| </ul> |
| |
| <h3 id="frame-support-for-jmlc-apicp">Frame Support for JMLC API/CP</h3> |
| <ul> |
| <li>New frame data type, deeply integrated into compiler and runtime</li> |
| <li>New builtin functions: transformapply, transformencode, transformdecode, transformmeta</li> |
| <li>Supported operations: read/write, left/right indexing, casting, append, transform/transformapply</li> |
| </ul> |
| |
| <h3 id="framework-compatibilityconfiguration">Framework Compatibility/Configuration</h3> |
| <ul> |
| <li>[SYSTEMML-418] Version-specific Spark memory budgets (>=1.6, legacy)</li> |
| <li>[SYSTEMML-158] Updated deprecated Hadoop properties</li> |
| <li>[SYSTEMML-476] Version-specific MR configuration handling (MRv2, MRv1)</li> |
| <li>Fixes for backwards compatibility to MRv1 (Guava dependency conflicts, runtime changes such as task handling for multiple output committer)</li> |
| <li>New pass-through mapred/mapreduce configurations through SystemML-config</li> |
| <li>[SYSTEMML-584/585] New thread-local configuration handling (compiler/DML config)</li> |
| </ul> |
| |
| <h3 id="deep-learning-support">Deep Learning Support</h3> |
| <ul> |
| <li>[SYSTMEML-618] New DML-script NN library</li> |
| <li>[SYSTEMML-540] New built-in singlenode operations: conv2d, maxpooling, im2col, col2im, rotate</li> |
| <li>New lenet-train DML script</li> |
| </ul> |
| |
| <h3 id="apiscript-usability">API/Script Usability</h3> |
| <ul> |
| <li>[SYSTEMML-607/604/611] Parser error handling</li> |
| <li>[SYSTEMML-506/508/544/577/649/651] Extended MLContext/JMLC APIs</li> |
| <li>[SYSTEMML-625/626/632] Improved source statement handling (e.g., imports, absolute paths)</li> |
| <li>[SYSTEMML-617/631/654] Improved namespace handling</li> |
| <li>[SYSTEMML-240] Extended stats outputs for Spark collect/broadcast/parallelize</li> |
| <li>[SYSTEMML-495] SystemML configuration handling</li> |
| <li>[SYSTEMML-209] Include algorithms in SystemML jar</li> |
| <li>[SYSTEMML-647/648] Deprecated castAsScalar, ppred</li> |
| <li>[SYSTEMML-477] JSON meta data handling</li> |
| <li>[SYSTEMML-294] Print matrix built-in function</li> |
| <li>[SYSTEMML-296/676/670] Improved PyDML syntax: slicing, rand, cdf, elif</li> |
| <li>[SYSTEMML-675] Support for negative for/parfor loop increments</li> |
| </ul> |
| |
| <h3 id="new-fused-physical-operators">New Fused Physical Operators</h3> |
| <ul> |
| <li>[SYSTEMML-488] Fused wdivmm w/ 4 operands</li> |
| <li>[SYSTEMML-510] Fused wdivmm/wcemm w/ eps term</li> |
| </ul> |
| |
| <h3 id="various-performance-features">Various Performance Features</h3> |
| <ul> |
| <li>[SYSTEMML-427/512] Extended IPA (propagate scalar variables)</li> |
| <li>[SYSTEMML-282] Extended update-in-place support for parfor intermediates</li> |
| <li>[SYSTEMML-552/399] Performance parallel binary/text readers (sort sparse/nnz handling)</li> |
| <li>[SYSTEMML-552/641] Cache-conscious operations: sparse-dense wdivmm/wsloss, sparse-dense/sparse-sparse mm, dense-dense skinny rhs mm</li> |
| <li>[SYSTEMML-641] Tuned special cases for block matrix multiplication: e.g., mm w/ skinny rhs, colwise parallelization wide rhs</li> |
| <li>[SYSTEMML-396/400] New/extended multithreaded operations: cumsum/cummin/cummax/cumprod, transpose, and rand</li> |
| <li>[SYSTEMML-510/694] New simplification rewrites: “pushdown unaryagg-transpose”, “simplify transpose-aggbin-binary chains”, “reorder minus-mmult”, “canonicalize matmult-add-scalar”, improved constant folding (all unary)</li> |
| <li>[SYSTEMML-653] Asynchronous bufferpool cleanup of evicted files/nio file eviction</li> |
| <li>MR iqm/quantile/median (qsort num reducers, qpick buffer size)</li> |
| </ul> |
| |
| <h3 id="dml-script-updates">DML Script Updates</h3> |
| <ul> |
| <li>[SYSTEMML-536] New KNN algorithm (still staging)</li> |
| <li>[SYSTEMML-534] Optional console output univariate statistics</li> |
| <li>[SYSTMEML-494] GLM compiler warnings</li> |
| <li>Robustness input/output handling L2SVM, MSVM, and Naive Bayes</li> |
| <li>Random data generator for ALS</li> |
| </ul> |
| |
| <h3 id="various-fixes">Various Fixes</h3> |
| <ul> |
| <li>Dozens of fixes for diverse issues, fix pack for 0.9 release</li> |
| </ul> |
| |
| <h3 id="build-documentation-examples">Build, Documentation, Examples</h3> |
| <ul> |
| <li>[SYSTEMML-551] Enhanced JMLC javadoc</li> |
| <li>[SYSTEMML-484] Build javadoc jar</li> |
| <li>[SYSTEMML-468] Contributing to SystemML doc</li> |
| <li>[SYSTEMML-517/524] DML Language Reference updates</li> |
| <li>[SYSTEMML-498] Troubleshooting guide</li> |
| <li>SystemML Jupyter/Zeppelin Notebook examples</li> |
| </ul> |
| |
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