Package org.ejml.concurrency

Class EjmlConcurrency

java.lang.Object

pabeles.concurrency.ConcurrencyOps

org.ejml.concurrency.EjmlConcurrency

public class EjmlConcurrency
extends ConcurrencyOps

Central class for controlling concurrency in EJML.

Nested Class Summary

Nested classes/interfaces inherited from class pabeles.concurrency.ConcurrencyOps

ConcurrencyOps.NewInstance<D>, ConcurrencyOps.Reset<D>

Field Summary

Fields

Modifier and Type	Field	Description
static int	ELEMENT_THRESHOLD	Minimum number of elements in a matrix before it will switch to concurrent implementation
static boolean	USE_CONCURRENT	Used to toggle auto matic switching to concurrent algorithms

Constructor Summary

Constructors

Constructor	Description
EjmlConcurrency()

Method Summary

Modifier and Type	Method	Description
static boolean	isUseConcurrent()
static void	setMaxThreads(int maxThreads)	Sets the maximum number of threads available in the thread pool and adjusts USE_CONCURRENT.
static boolean	useConcurrent(Matrix mat)	Returns true if the operation on the matrix should use the concurrent implementation.
static boolean	useConcurrent(MatrixSparse mat)	Returns true if the operation on the matrix should use the concurrent implementation.

Methods inherited from class pabeles.concurrency.ConcurrencyOps

getMaxThreads, getThreadPool, loopBlocks, loopBlocks, loopBlocks, loopBlocks, loopFor, loopFor, loopFor, max, min, sum

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

USE_CONCURRENT

public static boolean USE_CONCURRENT

Used to toggle auto matic switching to concurrent algorithms

ELEMENT_THRESHOLD

public static int ELEMENT_THRESHOLD

Minimum number of elements in a matrix before it will switch to concurrent implementation

Constructor Details

EjmlConcurrency

public EjmlConcurrency()

Method Details

setMaxThreads

public static void setMaxThreads(int maxThreads)

Sets the maximum number of threads available in the thread pool and adjusts USE_CONCURRENT. If the number of threads is less than 2 then USE_CONCURRENT will be set to false and the single thread version of code will be called. Otherwise USE_CONCURRENT will be true and the max threads in the pool set to the specified number.

Parameters:

maxThreads - Maximum number of threads. &le 1 means it will not be threaded.

isUseConcurrent

public static boolean isUseConcurrent()

useConcurrent

public static boolean useConcurrent(MatrixSparse mat)

Returns true if the operation on the matrix should use the concurrent implementation. If the matrix is too small it should always use a single threaded implementation since the overhead will slow it down.

useConcurrent

public static boolean useConcurrent(Matrix mat)

Returns true if the operation on the matrix should use the concurrent implementation. If the matrix is too small it should always use a single threaded implementation since the overhead will slow it down.