GEMV - General matrix-Vector multiplication

pyclblas.clblasCgemv(order, transA, M, N, alpha, A, offA, lda, x, offx, incx, beta, y, offy, incy, commandQueues, eventWaitList)

wraps: clblasCgemv

Matrix-vector product with a general rectangular matrix and float complex elements. Extended version. Matrix-vector products:

  • ( y ← α A x + β y )
  • ( y ← α ATx + β y )
Parameters:
  • order (clblasOrder [in]) – Row/column order.
  • transA (clblasTranspose [in]) – How matrix A is to be transposed.
  • M (int [in]) – Number of rows in matrix A.
  • N (int [in]) – Number of columns in matrix A.
  • alpha (complex [in]) – The factor of matrix A.
  • A (pyopencl.Buffer [in]) – Buffer object storing matrix A.
  • offA (int [in]) – Offset of the first element of the matrix A in the buffer object. Counted in elements.
  • lda (int [in]) – Leading dimension of matrix A.
  • x (pyopencl.Buffer [in]) – Buffer object storing vector x.
  • offx (int [in]) – Offset of first element of vector x in buffer object. Counted in elements.
  • incx (int [in]) – Increment for the elements of x. It cannot be zero.
  • beta (complex [in]) – The factor of the vector y.
  • y (pyopencl.Buffer [out]) – Buffer object storing the vector y.
  • offy (int [in]) – Offset of first element of vector y in buffer object. Counted in elements.
  • incy (int [in]) – Increment for the elements of y. It cannot be zero.
  • commandQueues (pyopencl.CommandQueue [in]) – OpenCL command queues. A list, tuple, or single instance of pyopencl.CommandQueue. Must not be None.
  • eventWaitList (pyopencl.Event [in]) – Event wait list. A list, tuple, or single instance of pyopencl.Event. May be None.
Returns:

A tuple of pyopencl.Event instances, one for each commandQueue supplied.

pyclblas.clblasDgemv(order, transA, M, N, alpha, A, offA, lda, x, offx, incx, beta, y, offy, incy, commandQueues, eventWaitList)

wraps: clblasDgemv

Matrix-vector product with a general rectangular matrix and double elements. Extended version. Matrix-vector products:

  • ( y ← α A x + β y )
  • ( y ← α ATx + β y )
Parameters:
  • order (clblasOrder [in]) – Row/column order.
  • transA (clblasTranspose [in]) – How matrix A is to be transposed.
  • M (int [in]) – Number of rows in matrix A.
  • N (int [in]) – Number of columns in matrix A.
  • alpha (float [in]) – The factor of matrix A.
  • A (pyopencl.Buffer [in]) – Buffer object storing matrix A.
  • offA (int [in]) – Offset of the first element of A in the buffer object. Counted in elements.
  • lda (int [in]) – Leading dimension of matrix A.
  • x (pyopencl.Buffer [in]) – Buffer object storing vector x.
  • offx (int [in]) – Offset of first element of vector x in buffer object. Counted in elements.
  • incx (int [in]) – Increment for the elements of x. It cannot be zero.
  • beta (float [in]) – The factor of the vector y.
  • y (pyopencl.Buffer [out]) – Buffer object storing the vector y.
  • offy (int [in]) – Offset of first element of vector y in buffer object. Counted in elements.
  • incy (int [in]) – Increment for the elements of y. It cannot be zero.
  • commandQueues (pyopencl.CommandQueue [in]) – OpenCL command queues. A list, tuple, or single instance of pyopencl.CommandQueue. Must not be None.
  • eventWaitList (pyopencl.Event [in]) – Event wait list. A list, tuple, or single instance of pyopencl.Event. May be None.
Returns:

A tuple of pyopencl.Event instances, one for each commandQueue supplied.

pyclblas.clblasSgemv(order, transA, M, N, alpha, A, offA, lda, x, offx, incx, beta, y, offy, incy, commandQueues, eventWaitList)

wraps: clblasSgemv

Matrix-vector product with a general rectangular matrix and float elements. Extended version. Matrix-vector products:

  • ( y ← α A x + β y )
  • ( y ← α ATx + β y )
Parameters:
  • order (clblasOrder [in]) – Row/column order.
  • transA (clblasTranspose [in]) – How matrix A is to be transposed.
  • M (int [in]) – Number of rows in matrix A.
  • N (int [in]) – Number of columns in matrix A.
  • alpha (float [in]) – The factor of matrix A.
  • A (pyopencl.Buffer [in]) – Buffer object storing matrix A.
  • offA (int [in]) – Offset of the first element of the matrix A in the buffer object. Counted in elements.
  • lda (int [in]) – Leading dimension of matrix A. It cannot be less than N when the order parameter is set to clblasRowMajor, or less than M when the parameter is set to clblasColumnMajor.
  • x (pyopencl.Buffer [in]) – Buffer object storing vector x.
  • offx (int [in]) – Offset of first element of vector x in buffer object. Counted in elements.
  • incx (int [in]) – Increment for the elements of x. It cannot be zero.
  • beta (float [in]) – The factor of the vector y.
  • y (pyopencl.Buffer [out]) – Buffer object storing the vector y.
  • offy (int [in]) – Offset of first element of vector y in buffer object. Counted in elements.
  • incy (int [in]) – Increment for the elements of y. It cannot be zero.
  • commandQueues (pyopencl.CommandQueue [in]) – OpenCL command queues. A list, tuple, or single instance of pyopencl.CommandQueue. Must not be None.
  • eventWaitList (pyopencl.Event [in]) – Event wait list. A list, tuple, or single instance of pyopencl.Event. May be None.
Returns:

A tuple of pyopencl.Event instances, one for each commandQueue supplied.

pyclblas.clblasZgemv(order, transA, M, N, alpha, A, offA, lda, x, offx, incx, beta, y, offy, incy, commandQueues, eventWaitList)

wraps: clblasZgemv

Matrix-vector product with a general rectangular matrix and double complex elements. Extended version. Matrix-vector products:

  • ( y ← α A x + β y )
  • ( y ← α ATx + β y )
Parameters:
  • order (clblasOrder [in]) – Row/column order.
  • transA (clblasTranspose [in]) – How matrix A is to be transposed.
  • M (int [in]) – Number of rows in matrix A.
  • N (int [in]) – Number of columns in matrix A.
  • alpha (complex [in]) – The factor of matrix A.
  • A (pyopencl.Buffer [in]) – Buffer object storing matrix A.
  • offA (int [in]) – Offset of the first element of the matrix A in the buffer object. Counted in elements.
  • lda (int [in]) – Leading dimension of matrix A.
  • x (pyopencl.Buffer [in]) – Buffer object storing vector x.
  • offx (int [in]) – Offset of first element of vector x in buffer object. Counted in elements.
  • incx (int [in]) – Increment for the elements of x. It cannot be zero.
  • beta (complex [in]) – The factor of the vector y.
  • y (pyopencl.Buffer [out]) – Buffer object storing the vector y.
  • offy (int [in]) – Offset of first element of vector y in buffer object. Counted in elements.
  • incy (int [in]) – Increment for the elements of y. It cannot be zero.
  • commandQueues (pyopencl.CommandQueue [in]) – OpenCL command queues. A list, tuple, or single instance of pyopencl.CommandQueue. Must not be None.
  • eventWaitList (pyopencl.Event [in]) – Event wait list. A list, tuple, or single instance of pyopencl.Event. May be None.
Returns:

A tuple of pyopencl.Event instances, one for each commandQueue supplied.