Developer Reference for Intel® oneAPI Math Kernel Library for C

ID 766684
Date 7/13/2023
Public

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mkl_sparse_?_spmmd

Computes the product of two sparse matrices and stores the result as a dense matrix.

Syntax

sparse_status_t mkl_sparse_s_spmmd (const sparse_operation_t operation, const sparse_matrix_t A, const sparse_matrix_t B, const sparse_layout_t layout, float *C, const MKL_INT ldc);

sparse_status_t mkl_sparse_d_spmmd (const sparse_operation_t operation, const sparse_matrix_t A, const sparse_matrix_t B, const sparse_layout_t layout, double *C, const MKL_INT ldc);

sparse_status_t mkl_sparse_c_spmmd (const sparse_operation_t operation, const sparse_matrix_t A, const sparse_matrix_t B, const sparse_layout_t layout, MKL_Complex8 *C, const MKL_INT ldc);

sparse_status_t mkl_sparse_z_spmmd (const sparse_operation_t operation, const sparse_matrix_t A, const sparse_matrix_t B, const sparse_layout_t layout, MKL_Complex16 *C, const MKL_INT ldc);

Include Files

  • mkl_spblas.h

Description

The mkl_sparse_?_spmmd routine performs a matrix-matrix operation:

C := op(A)*B

where A and B are sparse matrices, op is a matrix modifier for matrix A, and C is a dense matrix.

NOTE:

This routine is not supported for sparse matrices in the COO format. For sparse matrices in BSR format, these combinations of (indexing, block_layout) are supported:

  • (SPARSE_INDEX_BASE_ZERO, SPARSE_LAYOUT_ROW_MAJOR)

  • (SPARSE_INDEX_BASE_ONE, SPARSE_LAYOUT_COLUMN_MAJOR)

Input Parameters

operation

Specifies operation op() on input matrix.

SPARSE_OPERATION_NON_TRANSPOSE

Non-transpose, op(A) = A.

SPARSE_OPERATION_TRANSPOSE

Transpose, op(A) = AT.

SPARSE_OPERATION_CONJUGATE_TRANSPOSE

Conjugate transpose, op(A) = AH.

A

Handle which contains the sparse matrix A.

B

Handle which contains the sparse matrix B.

layout

Describes the storage scheme for the dense matrix:

SPARSE_LAYOUT_COLUMN_MAJOR

Storage of elements uses column major layout.

SPARSE_LAYOUT_ROW_MAJOR

Storage of elements uses row major layout.

ldC

Leading dimension of matrix C.

Output Parameters

C

Resulting dense matrix.

Return Values

The function returns a value indicating whether the operation was successful or not, and why.

SPARSE_STATUS_SUCCESS

The operation was successful.

SPARSE_STATUS_NOT_INITIALIZED

The routine encountered an empty handle or matrix array.

SPARSE_STATUS_ALLOC_FAILED

Internal memory allocation failed.

SPARSE_STATUS_INVALID_VALUE

The input parameters contain an invalid value.

SPARSE_STATUS_EXECUTION_FAILED

Execution failed.

SPARSE_STATUS_INTERNAL_ERROR

An error in algorithm implementation occurred.

SPARSE_STATUS_NOT_SUPPORTED

The requested operation is not supported.