| Package | Description | 
|---|---|
| org.apache.sysds.hops.ipa | |
| org.apache.sysds.hops.rewrite | 
| Modifier and Type | Class and Description | 
|---|---|
class  | 
IPAPassApplyStaticAndDynamicHopRewrites
This rewrite applies static hop dag and statement block
 rewrites such as constant folding and branch removal
 in order to simplify statistic propagation. 
 | 
class  | 
IPAPassCompressionWorkloadAnalysis
This rewrite obtains workload summaries for all hops candidates amenable for compression as a basis for
 workload-aware compression planning. 
 | 
class  | 
IPAPassEliminateDeadCode
This rewrite eliminates unnecessary sub-DAGs that produce
 transient write outputs which are never consumed subsequently. 
 | 
class  | 
IPAPassFlagFunctionsRecompileOnce
This rewrite marks functions with loops as recompile once
 in order to reduce recompilation overhead. 
 | 
class  | 
IPAPassFlagNonDeterminism  | 
class  | 
IPAPassForwardFunctionCalls
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. 
 | 
class  | 
IPAPassInlineFunctions
This rewrite inlines single statement block functions, which have fewer 
 operations than an internal threshold. 
 | 
class  | 
IPAPassPropagateReplaceLiterals
This rewrite propagates and replaces literals into functions
 in order to enable subsequent rewrites such as branch removal. 
 | 
class  | 
IPAPassRemoveConstantBinaryOps
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. 
 | 
class  | 
IPAPassRemoveUnnecessaryCheckpoints
This rewrite identifies and removes unnecessary checkpoints, i.e.,
 persisting of Spark RDDs into a given storage level. 
 | 
class  | 
IPAPassRemoveUnusedFunctions
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. 
 | 
class  | 
IPAPassReplaceEvalFunctionCalls
This rewrite applies static hop dag and statement block
 rewrites such as constant folding and branch removal
 in order to simplify statistic propagation. 
 | 
| Modifier and Type | Class and Description | 
|---|---|
class  | 
IPAPassRewriteFederatedPlan
This rewrite generates a federated execution plan by estimating and setting costs and the FederatedOutput values of
 all relevant hops in the DML program. 
 | 
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