PiParallel

java.lang.Object
- org.apfloat.samples.Pi
- - org.apfloat.samples.PiParallel

Direct Known Subclasses:

PiDistributed
```
public class PiParallel
extends Pi
```
Calculates pi using multiple threads in parallel.
Note that to get any performance gain from running many threads in parallel, the JVM must be executing native threads. If the JVM is running in green threads mode, there is no advantage of having multiple threads, as the JVM will in fact execute just one thread and divide its time to multiple simulated threads.

Version:

1.14.0

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`protected static class`	`PiParallel.ParallelBinarySplittingPiCalculator`	Parallel version of the binary splitting algorithm.
`static class`	`PiParallel.ParallelChudnovskyPiCalculator`	Class for calculating pi using the parallel Chudnovskys' binary splitting algorithm.
`static class`	`PiParallel.ParallelRamanujanPiCalculator`	Class for calculating pi using the parallel Ramanujan's binary splitting algorithm.
`protected static class`	`PiParallel.ThreadLimitedOperation<T>`	Class to execute operations while setting `ApfloatContext.setNumberOfProcessors(int)` to some value.

Nested classes/interfaces inherited from class org.apfloat.samples.Pi
Pi.AbstractBinarySplittingSeries, Pi.BinarySplittingPiCalculator, Pi.BinarySplittingProgressIndicator, Pi.BinarySplittingSeries, Pi.BorweinPiCalculator, Pi.ChudnovskyBinarySplittingSeries, Pi.ChudnovskyPiCalculator, Pi.GaussLegendrePiCalculator, Pi.RamanujanBinarySplittingSeries, Pi.RamanujanPiCalculator

Field Summary

Fields
Modifier and Type Field Description

private static boolean DEBUG
- Fields inherited from class org.apfloat.samples.Pi
  err, out

Constructor Summary

Constructors
Constructor Description

PiParallel()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type Method Description

static void main(java.lang.String[] args)
Command-line entry point.
- Methods inherited from class org.apfloat.samples.Pi
  getErr, getInt, getLong, getOut, getPrecision, getRadix, run, setErr, setOut
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - DEBUG
```
private static final boolean DEBUG
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - PiParallel
```
PiParallel()
```
- Method Detail
  - main
```
public static void main(java.lang.String[] args)
                 throws java.io.IOException,
                        ApfloatRuntimeException
```
    Command-line entry point.
    
    Parameters:
    
    args - Command-line parameters.
    
    Throws:
    
    java.io.IOException - In case writing the output fails.
    
    ApfloatRuntimeException