Developer Reference for Intel® oneAPI Math Kernel Library - C

Developer Reference

  • 2021.1
  • 12/04/2020
  • Public Content
Contents

mkl_sparse_sp2m

Computes the product of two sparse matrices. The result is stored in a newly allocated sparse matrix.

Syntax

sparse_status_t mkl_sparse_sp2m
(
const sparse_operation_t
transA
,
const struct
matrix_descr
descrA
,
const
sparse_matrix_t
A
,
const sparse_operation_t
transB
,
const struct
matrix_descr
descrB
,
const
sparse_matrix_t
B
,
const sparse_request_t
request
,
sparse_matrix_t
*C
);
Include Files
  • mkl_spblas.h
Description
The
mkl_sparse_sp2m
 routine performs a matrix-matrix operation:
C := opA(A) *opB(B)
where
A
,
B
, and
C
 are sparse matrices,
opA
 and
opB
 are matrix modifiers for matrices
A
 and
B
, respectively.
Input Parameters
opA
Specifies operation on input matrix.
SPARSE_OPERATION_NON_TRANSPOSE
Non-transpose, op(
A
)=
A
SPARSE_OPERATION_TRANSPOSE
Transpose, op(
A
)=
A
T
SPARSE_OPERATION_CONJUGATE_TRANSPOSE
Conjugate transpose, op(
A
)=
A
H
opB
Specifies operation on input matrix.
SPARSE_OPERATION_NON_TRANSPOSE
Non-transpose, op(
B
)=
B
SPARSE_OPERATION_TRANSPOSE
Transpose, op(
B
)=
B
T
SPARSE_OPERATION_CONJUGATE_TRANSPOSE
Conjugate transpose, op(
B
)=
B
H
descrA
Structure that specifies sparse matrix properties.
Currently, only SPARSE_MATRIX_TYPE_GENERAL is supported.
sparse_matrix_type_t
type
 specifies the type of sparse matrix.
SPARSE_MATRIX_TYPE_GENERAL
The matrix is processed as is.
SPARSE_MATRIX_TYPE_SYMMETRIC
The matrix is symmetric (only the requested triangle is processed).
SPARSE_MATRIX_TYPE_HERMITIAN
The matrix is Hermitian (only the requested triangle is processed).
SPARSE_MATRIX_TYPE_TRIANGULAR
The matrix is triangular (only the requested triangle is processed).
SPARSE_MATRIX_TYPE_DIAGONAL
The matrix is diagonal (only diagonal elements are processed).
SPARSE_MATRIX_TYPE_BLOCK_TRIANGULAR
The matrix is block-triangular (only the requested triangle is processed). This applies to BSR format only.
SPARSE_MATRIX_TYPE_BLOCK_DIAGONAL
The matrix is block-diagonal (only the requested triangle is processed). This applies to BSR format only.
sparse_fill_mode_t
mode
 specifies the triangular matrix portion for symmetric, Hermitian, triangular, and block-triangular matrices.
SPARSE_FILL_MODE_LOWER
The lower triangular matrix is processed.
SPARSE_FILL_MODE_UPPER
The upper triangular matrix is processed.
sparse_diag_type_t
diag
 specifies the type of diagonal for non-general matrices.
SPARSE_DIAG_NON_UNIT
Diagonal elements must not be equal to 1.
SPARSE_DIAG_UNIT
Diagonal elements are equal to 1.
descrB
Structure that specifies sparse matrix properties.
Currently, only SPARSE_MATRIX_TYPE_GENERAL is supported.
sparse_matrix_type_t
type
 specifies the type of sparse matrix.
SPARSE_MATRIX_TYPE_GENERAL
The matrix is processed as is.
SPARSE_MATRIX_TYPE_SYMMETRIC
The matrix is symmetric (only the requested triangle is processed).
SPARSE_MATRIX_TYPE_HERMITIAN
The matrix is Hermitian (only the requested triangle is processed).
SPARSE_MATRIX_TYPE_TRIANGULAR
The matrix is triangular (only the requested triangle is processed).
SPARSE_MATRIX_TYPE_DIAGONAL
The matrix is diagonal (only diagonal elements are processed).
SPARSE_MATRIX_TYPE_BLOCK_TRIANGULAR
The matrix is block-triangular (only the requested triangle is processed). This applies to BSR format only.
SPARSE_MATRIX_TYPE_BLOCK_DIAGONAL
The matrix is block-diagonal (only the requested triangle is processed). This applies to BSR format only.
sparse_fill_mode_t
mode
 specifies the triangular matrix portion for symmetric, Hermitian, triangular, and block-triangular matrices.
SPARSE_FILL_MODE_LOWER
The lower triangular matrix is processed.
SPARSE_FILL_MODE_UPPER
The upper triangular matrix is processed.
sparse_diag_type_t
diag
 specifies the type of diagonal for non-general matrices.
SPARSE_DIAG_NON_UNIT
Diagonal elements must not be equal to 1.
SPARSE_DIAG_UNIT
Diagonal elements are equal to 1.
A
Handle which contains the sparse matrix
A
.
B
Handle which contains the sparse matrix
B
.
request
Specifies whether the full computations are performed at once or using the two-stage algorithm. See Two-stage Algorithm for Inspector-executor Sparse BLAS Routines.
SPARSE_STAGE_NNZ_COUNT
Only
rowIndex
 (BSR/CSR format) or
colIndex
 (CSC format) array of the matrix is computed internally. The computation can be extracted to measure the memory required for full operation.
SPARSE_STAGE_FINALIZE_MULT_NO_VAL
Finalize computations of the matrix structure (values will not be computed). Use only after the call with SPARSE_STAGE_NNZ_COUNT parameter.
SPARSE_STAGE_FINALIZE_MULT
Finalize computation. Can also be used when the matrix structure remains unchanged and only values of the resulting matrix
C
 need to be recomputed.
SPARSE_STAGE_FULL_MULT_NO_VAL
Perform computations of the matrix structure.
SPARSE_STAGE_FULL_MULT
Perform the entire computation in a single step.
Output Parameters
C
Handle which contains the resulting sparse matrix.
Return Values
The function returns a value indicating whether the operation was successful, or the reason why it failed.
SPARSE_STATUS_SUCCESS
The operation was successful.
SPARSE_STATUS_NOT_INITIALIZED
The routine encountered an empty handle or matrix array.
SPARSE_STATUS_ALLOC_FAILED
The internal memory allocation failed.
SPARSE_STATUS_INVALID_VALUE
The input parameters contain an invalid value.
SPARSE_STATUS_EXECUTION_FAILED
The execution failed.
SPARSE_STATUS_INTERNAL_ERROR
An error occurred in the implementation of the algorithm.
SPARSE_STATUS_NOT_SUPPORTED
The requested operation is not supported.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.