Package org.apfloat.samples

Class 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

Author:

Mikko Tommila

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 inherited from class org.apfloat.samples.Pi

err, out

Method Summary

Modifier and Type	Method	Description
static void	main(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

Method Details

main

public static void main(String[] args)
                 throws IOException,
ApfloatRuntimeException

Command-line entry point.

Parameters:

args - Command-line parameters.

Throws:

IOException - In case writing the output fails.

ApfloatRuntimeException