OptimizerHeuristic (Apache SystemDS 3.0.0 API)

java.lang.Object
- org.apache.sysds.runtime.controlprogram.parfor.opt.Optimizer
- - org.apache.sysds.runtime.controlprogram.parfor.opt.OptimizerRuleBased
  - - org.apache.sysds.runtime.controlprogram.parfor.opt.OptimizerHeuristic

```
public class OptimizerHeuristic
extends OptimizerRuleBased
```
Heuristic ParFor Optimizer: This optimizer extends the rule-based optimizer by a time-based cost estimate for execution type decisions.

- Nested Class Summary
  - Nested classes/interfaces inherited from class org.apache.sysds.runtime.controlprogram.parfor.opt.Optimizer
    Optimizer.CostModelType, Optimizer.PlanInputType
- Field Summary
  
  Fields
  Modifier and Type Field Description
  
  static double EXEC_TIME_THRESHOLD
  - Fields inherited from class org.apache.sysds.runtime.controlprogram.parfor.opt.OptimizerRuleBased
    ALLOW_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
- Constructor Summary
  
  Constructors
  Constructor Description
  
  OptimizerHeuristic()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  Optimizer.CostModelType getCostModelType()
  
  ParForProgramBlock.POptMode getOptMode()
  - Methods inherited from class org.apache.sysds.runtime.controlprogram.parfor.opt.OptimizerRuleBased
    allowsBinaryCellPartitions, getPlanInputType, isInMemoryResultMerge, optimize, toMB
  - Methods inherited from class org.apache.sysds.runtime.controlprogram.parfor.opt.Optimizer
    getNumEvaluatedPlans, getNumTotalPlans
  - Methods inherited from class java.lang.Object
    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - EXEC_TIME_THRESHOLD
```
public static final double EXEC_TIME_THRESHOLD
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - OptimizerHeuristic
```
public OptimizerHeuristic()
```
- Method Detail
  - getCostModelType
```
public Optimizer.CostModelType getCostModelType()
```
    Overrides:
    
    getCostModelType in class OptimizerRuleBased
  - getOptMode
```
public ParForProgramBlock.POptMode getOptMode()
```
    Overrides:
    
    getOptMode in class OptimizerRuleBased