Class IntAparapiMatrixStrategy

java.lang.Object
org.apfloat.aparapi.IntAparapiMatrixStrategy
All Implemented Interfaces:
MatrixStrategy

public class IntAparapiMatrixStrategy extends Object implements MatrixStrategy
Matrix transposition in the GPU for the int type.
Since:
1.8.3
Version:
1.8.3
Author:
Mikko Tommila
  • Constructor Details

    • IntAparapiMatrixStrategy

      public IntAparapiMatrixStrategy()
      Default constructor.
  • Method Details

    • transpose

      public void transpose(ArrayAccess arrayAccess, int n1, int n2) throws ApfloatRuntimeException
      Description copied from interface: MatrixStrategy
      Transpose a n1 x n2 matrix.

      Both n1 and n2 must be powers of two. Additionally, one of these must be true:

      n1 = n2
      n1 = 2*n2
      n2 = 2*n1

      Specified by:
      transpose in interface MatrixStrategy
      Parameters:
      arrayAccess - Accessor to the matrix data. This data will be transposed.
      n1 - Number of rows in the matrix.
      n2 - Number of columns in the matrix.
      Throws:
      ApfloatRuntimeException
    • transposeSquare

      public void transposeSquare(ArrayAccess arrayAccess, int n1, int n2) throws ApfloatRuntimeException
      Description copied from interface: MatrixStrategy
      Transpose a square n1 x n1 block of n1 x n2 matrix.

      Both n1 and n2 must be powers of two, and n1 <= n2.

      Specified by:
      transposeSquare in interface MatrixStrategy
      Parameters:
      arrayAccess - Accessor to the matrix data. This data will be transposed.
      n1 - Number of rows and columns in the block to be transposed.
      n2 - Number of columns in the matrix.
      Throws:
      ApfloatRuntimeException
    • permuteToHalfWidth

      public void permuteToHalfWidth(ArrayAccess arrayAccess, int n1, int n2) throws ApfloatRuntimeException
      Description copied from interface: MatrixStrategy
      Permute the rows of the n1 x n2 matrix so that it is shaped like a 2*n1 x n2/2 matrix. Logically, the matrix is split in half, and the right half is moved below the left half.

      Both n1 and n2 must be powers of two. E.g. if the matrix layout is originally as follows:

      Matrix before
      01234567
      89101112131415

      Then after this method it is as follows:

      Matrix after
      0123
      891011
      4567
      12131415
      Specified by:
      permuteToHalfWidth in interface MatrixStrategy
      Parameters:
      arrayAccess - Accessor to the matrix data. This data will be permuted.
      n1 - Number of rows in the matrix.
      n2 - Number of columns in the matrix.
      Throws:
      ApfloatRuntimeException
    • permuteToDoubleWidth

      public void permuteToDoubleWidth(ArrayAccess arrayAccess, int n1, int n2) throws ApfloatRuntimeException
      Description copied from interface: MatrixStrategy
      Permute the rows of the n1 x n2 matrix so that it is shaped like a n1/2 x 2*n2 matrix. Logically, the matrix is split in half, and the lower half is moved to the right side of the upper half.

      Both n1 and n2 must be powers of two, and n1 >= 2.

      E.g. if the matrix layout is originally as follows:

      Matrix before
      0123
      4567
      891011
      12131415

      Then after this method it is as follows:

      Matrix after
      0123891011
      456712131415
      Specified by:
      permuteToDoubleWidth in interface MatrixStrategy
      Parameters:
      arrayAccess - Accessor to the matrix data. This data will be permuted.
      n1 - Number of rows in the matrix.
      n2 - Number of columns in the matrix.
      Throws:
      ApfloatRuntimeException