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| <h1 title="Package" class="title">Package org.apache.sysds.hops.ipa</h1> |
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| <caption><span>Class Summary</span><span class="tabEnd"> </span></caption> |
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| <th class="colLast" scope="col">Description</th> |
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| <tr class="altColor"> |
| <th class="colFirst" scope="row"><a href="FunctionCallGraph.html" title="class in org.apache.sysds.hops.ipa">FunctionCallGraph</a></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colFirst" scope="row"><a href="FunctionCallSizeInfo.html" title="class in org.apache.sysds.hops.ipa">FunctionCallSizeInfo</a></th> |
| <td class="colLast"> |
| <div class="block">Auxiliary data structure to hold function call summaries in terms |
| of information about number of function calls, consistent dimensions, |
| consistent sparsity, and dimension-preserving functions.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <th class="colFirst" scope="row"><a href="InterProceduralAnalysis.html" title="class in org.apache.sysds.hops.ipa">InterProceduralAnalysis</a></th> |
| <td class="colLast"> |
| <div class="block">This Inter Procedural Analysis (IPA) serves two major purposes: |
| 1) Inter-Procedure Analysis: propagate statistics from calling program into |
| functions and back into main program.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colFirst" scope="row"><a href="IPAPass.html" title="class in org.apache.sysds.hops.ipa">IPAPass</a></th> |
| <td class="colLast"> |
| <div class="block">Base class for all IPA passes.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassApplyStaticAndDynamicHopRewrites.html" title="class in org.apache.sysds.hops.ipa">IPAPassApplyStaticAndDynamicHopRewrites</a></th> |
| <td class="colLast"> |
| <div class="block">This rewrite applies static hop dag and statement block |
| rewrites such as constant folding and branch removal |
| in order to simplify statistic propagation.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassCompressionWorkloadAnalysis.html" title="class in org.apache.sysds.hops.ipa">IPAPassCompressionWorkloadAnalysis</a></th> |
| <td class="colLast"> |
| <div class="block">This rewrite obtains workload summaries for all hops candidates amenable for compression as a basis for |
| workload-aware compression planning.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassEliminateDeadCode.html" title="class in org.apache.sysds.hops.ipa">IPAPassEliminateDeadCode</a></th> |
| <td class="colLast"> |
| <div class="block">This rewrite eliminates unnecessary sub-DAGs that produce |
| transient write outputs which are never consumed subsequently.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassFlagFunctionsRecompileOnce.html" title="class in org.apache.sysds.hops.ipa">IPAPassFlagFunctionsRecompileOnce</a></th> |
| <td class="colLast"> |
| <div class="block">This rewrite marks functions with loops as recompile once |
| in order to reduce recompilation overhead.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassFlagNonDeterminism.html" title="class in org.apache.sysds.hops.ipa">IPAPassFlagNonDeterminism</a></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassForwardFunctionCalls.html" title="class in org.apache.sysds.hops.ipa">IPAPassForwardFunctionCalls</a></th> |
| <td class="colLast"> |
| <div class="block">This rewrite forwards a function call to a function with a simple |
| function call that only consumes function parameters and literals |
| into the original call location.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassInlineFunctions.html" title="class in org.apache.sysds.hops.ipa">IPAPassInlineFunctions</a></th> |
| <td class="colLast"> |
| <div class="block">This rewrite inlines single statement block functions, which have fewer |
| operations than an internal threshold.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassPropagateReplaceLiterals.html" title="class in org.apache.sysds.hops.ipa">IPAPassPropagateReplaceLiterals</a></th> |
| <td class="colLast"> |
| <div class="block">This rewrite propagates and replaces literals into functions |
| in order to enable subsequent rewrites such as branch removal.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassRemoveConstantBinaryOps.html" title="class in org.apache.sysds.hops.ipa">IPAPassRemoveConstantBinaryOps</a></th> |
| <td class="colLast"> |
| <div class="block">This rewrite identifies binary operations with constant matrices |
| such as X * ones, where ones might be created as a vector of ones |
| before a loop.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassRemoveUnnecessaryCheckpoints.html" title="class in org.apache.sysds.hops.ipa">IPAPassRemoveUnnecessaryCheckpoints</a></th> |
| <td class="colLast"> |
| <div class="block">This rewrite identifies and removes unnecessary checkpoints, i.e., |
| persisting of Spark RDDs into a given storage level.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassRemoveUnusedFunctions.html" title="class in org.apache.sysds.hops.ipa">IPAPassRemoveUnusedFunctions</a></th> |
| <td class="colLast"> |
| <div class="block">This rewrite identifies and removes unused functions in order |
| to reduce compilation overhead and other overheads such as |
| parfor worker creation, where we construct function copies.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassReplaceEvalFunctionCalls.html" title="class in org.apache.sysds.hops.ipa">IPAPassReplaceEvalFunctionCalls</a></th> |
| <td class="colLast"> |
| <div class="block">This rewrite applies static hop dag and statement block |
| rewrites such as constant folding and branch removal |
| in order to simplify statistic propagation.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <th class="colFirst" scope="row"><a href="IPAPassRewriteFederatedPlan.html" title="class in org.apache.sysds.hops.ipa">IPAPassRewriteFederatedPlan</a></th> |
| <td class="colLast"> |
| <div class="block">This rewrite generates a federated execution plan by estimating and setting costs and the FederatedOutput values of |
| all relevant hops in the DML program.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
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