Class OptimizerConstrained
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- org.apache.sysds.runtime.controlprogram.parfor.opt.Optimizer
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- org.apache.sysds.runtime.controlprogram.parfor.opt.OptimizerRuleBased
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- org.apache.sysds.runtime.controlprogram.parfor.opt.OptimizerConstrained
 
 
 
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 public class OptimizerConstrained extends OptimizerRuleBased Rule-Based ParFor Optimizer (time: O(n)): Applied rule-based rewrites: - see base class. Checked constraints: - 1) rewrite set data partitioner (incl. recompile RIX) - 4) rewrite set execution strategy - 9) rewrite set degree of parallelism - 10) rewrite set task partitioner - 11) rewrite set result merge
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Nested Class Summary- 
Nested classes/interfaces inherited from class org.apache.sysds.runtime.controlprogram.parfor.opt.OptimizerOptimizer.CostModelType, Optimizer.PlanInputType
 
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Field Summary- 
Fields inherited from class org.apache.sysds.runtime.controlprogram.parfor.opt.OptimizerRuleBasedALLOW_REMOTE_NESTED_PARALLELISM, FUNCTION_UNFOLD_NAMEPREFIX, MAX_REPLICATION_FACTOR_EXPORT, MAX_REPLICATION_FACTOR_PARTITIONING, PAR_K_FACTOR, PAR_K_MR_FACTOR, PROB_SIZE_THRESHOLD_MB, PROB_SIZE_THRESHOLD_PARTITIONING, PROB_SIZE_THRESHOLD_REMOTE
 
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Constructor SummaryConstructors Constructor Description OptimizerConstrained()
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Method SummaryAll Methods Instance Methods Concrete Methods Modifier and Type Method Description ParForProgramBlock.POptModegetOptMode()booleanoptimize(ParForStatementBlock sb, ParForProgramBlock pb, OptTree plan, CostEstimator est, ExecutionContext ec)Main optimization procedure.- 
Methods inherited from class org.apache.sysds.runtime.controlprogram.parfor.opt.OptimizerRuleBasedallowsBinaryCellPartitions, getCostModelType, getPlanInputType, isInMemoryResultMerge, toMB
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Methods inherited from class org.apache.sysds.runtime.controlprogram.parfor.opt.OptimizergetNumEvaluatedPlans, getNumTotalPlans
 
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Method Detail- 
getOptModepublic ParForProgramBlock.POptMode getOptMode() - Overrides:
- getOptModein class- OptimizerRuleBased
 
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optimizepublic boolean optimize(ParForStatementBlock sb, ParForProgramBlock pb, OptTree plan, CostEstimator est, ExecutionContext ec) Main optimization procedure. Transformation-based heuristic (rule-based) optimization (no use of sb, direct change of pb).- Overrides:
- optimizein class- OptimizerRuleBased
- Parameters:
- sb- parfor statement block
- pb- parfor program block
- plan- complete plan of a top-level parfor
- est- cost estimator
- ec- execution context
- Returns:
- true if plan changed, false otherwise
 
 
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