Package org.flag4j.operations.dense.real

Class RealDenseMatrixMultiplication

java.lang.Object

org.flag4j.operations.dense.real.RealDenseMatrixMultiplication

public class RealDenseMatrixMultiplication
extends Object

This class contains several low level methods for computing matrix-matrix multiplications.
WARNING: These methods do not perform any sanity checks.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	RealDenseMatrixMultiplication()

Method Summary

Modifier and Type	Method	Description
static double[]	blocked(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the matrix multiplication of two real dense matrices using a blocked algorithm.
static double[]	blockedReordered(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the matrix multiplication of two real dense matrices using a blocked algorithm with the j-k loops swapped.
static double[]	blockedVector(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the multiplication of a real dense matrix with a real dense vector using a blocked algorithm.
static double[]	concurrentBlocked(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the matrix multiplication of two real dense matrices using a concurrent implementation of a blocked algorithm.
static double[]	concurrentBlockedReordered(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the matrix multiplication of two real dense matrices using a concurrent implementation of a blocked algorithm with the j-k loops swapped.
static double[]	concurrentBlockedVector(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the multiplication of a real dense matrix with a real dense vector using a concurrent implementation of a blocked algorithm.
static double[]	concurrentReordered(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the matrix multiplication of two real dense matrices using a concurrent implementation of the standard matrix multiplication algorithm with j-k loops swapped.
static double[]	concurrentStandard(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the matrix multiplication of two real dense matrices using a concurrent implementation of the standard matrix multiplication algorithm.
static double[]	concurrentStandardVector(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the multiplication of a real dense matrix with a real dense vector using a concurrent implementation of the standard matrix multiplication algorithm.
static void	main(String[] args)
static double[]	reordered(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the matrix multiplication between two real dense matrices using the standard algorithm with j-k loops swapped.
static double[]	standard(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the matrix multiplication between two real dense matrices using the standard algorithm.
static double[]	standardVector(double[] src1, Shape shape1, double[] src2, Shape shape2)	Computes the multiplication of a real dense matrix with a real dense vector using the standard algorithm.

Methods inherited from class java.lang.Object

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

Constructor Details

RealDenseMatrixMultiplication

private RealDenseMatrixMultiplication()

Method Details

standard

public static double[] standard(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the matrix multiplication between two real dense matrices using the standard algorithm.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape fo the second matrix.

Returns:

The result of matrix multiplying the two matrices.

reordered

public static double[] reordered(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the matrix multiplication between two real dense matrices using the standard algorithm with j-k loops swapped.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape fo the second matrix.

Returns:

The result of matrix multiplying the two matrices.

blocked

public static double[] blocked(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the matrix multiplication of two real dense matrices using a blocked algorithm.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape fo the second matrix.

Returns:

The result of matrix multiplying the two matrices.

blockedReordered

public static double[] blockedReordered(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the matrix multiplication of two real dense matrices using a blocked algorithm with the j-k loops swapped.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape fo the second matrix.

Returns:

The result of matrix multiplying the two matrices.

concurrentStandard

public static double[] concurrentStandard(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the matrix multiplication of two real dense matrices using a concurrent implementation of the standard matrix multiplication algorithm.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape fo the second matrix.

Returns:

The result of matrix multiplying the two matrices.

concurrentReordered

public static double[] concurrentReordered(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the matrix multiplication of two real dense matrices using a concurrent implementation of the standard matrix multiplication algorithm with j-k loops swapped.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape fo the second matrix.

Returns:

The result of matrix multiplying the two matrices.

concurrentBlocked

public static double[] concurrentBlocked(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the matrix multiplication of two real dense matrices using a concurrent implementation of a blocked algorithm.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape fo the second matrix.

Returns:

The result of matrix multiplying the two matrices.

concurrentBlockedReordered

public static double[] concurrentBlockedReordered(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the matrix multiplication of two real dense matrices using a concurrent implementation of a blocked algorithm with the j-k loops swapped.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape fo the second matrix.

Returns:

The result of matrix multiplying the two matrices.

standardVector

public static double[] standardVector(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the multiplication of a real dense matrix with a real dense vector using the standard algorithm.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape fo the second matrix.

Returns:

The result of matrix multiplying the two matrices.

blockedVector

public static double[] blockedVector(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the multiplication of a real dense matrix with a real dense vector using a blocked algorithm.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape fo the second matrix.

Returns:

The result of matrix multiplying the two matrices.

concurrentStandardVector

public static double[] concurrentStandardVector(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the multiplication of a real dense matrix with a real dense vector using a concurrent implementation of the standard matrix multiplication algorithm.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape fo the second matrix.

Returns:

The result of matrix multiplying the two matrices.

concurrentBlockedVector

public static double[] concurrentBlockedVector(double[] src1,
 Shape shape1,
 double[] src2,
 Shape shape2)

Computes the multiplication of a real dense matrix with a real dense vector using a concurrent implementation of a blocked algorithm.

Parameters:

src1 - Entries of the first matrix.

shape1 - Shape of the first matrix.

src2 - Entries of the second matrix.

shape2 - Shape fo the second matrix.

Returns:

The result of matrix multiplying the two matrices.

main

public static void main(String[] args)