Developer Reference for Intel® oneAPI Math Kernel Library - C

Developer Reference

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

mkl_sparse_set_symgs_hint

Syntax

Sets estimate of number and type of upcoming
mkl_sparse_?_symgs
 operations.
sparse_status_t mkl_sparse_set_symgs_hint
(
const sparse_matrix_t
A
,
const sparse_operation_t
operation
,
const struct
matrix_descr
descr
,
const MKL_INT
expected_calls
);
Include Files
  • mkl_spblas.h
Description
Use the
mkl_sparse_set_symgs_hint
 routine to provide the Inspector-executor Sparse BLAS API an estimate of the number of upcoming symmetric Gauss-Zeidel preconditioner operations for performance optimization, and specify whether or not to perform an operation on the matrix.
Input Parameters
operation
Specifies the operation performed on matrix
A
.
If
operation
 =
SPARSE_OPERATION_NON_TRANSPOSE
,
op(
A
) =
A
.
If
operation
 =
SPARSE_OPERATION_TRANSPOSE
,
op(
A
) =
A
T
.
If
operation
 =
SPARSE_OPERATION_CONJUGATE_TRANSPOSE
,
op(
A
) =
A
H
.
descr
Structure
 specifying sparse matrix properties.
sparse_matrix_type_t
type
 - Specifies the type of a 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 requested triangle is processed). Applies to BSR format only.
SPARSE_MATRIX_TYPE_BLOCK_DIAGONAL
The matrix is block-diagonal (only diagonal blocks are processed). Applies to BSR format only.
sparse_fill_mode_t
mode
 - Specifies the triangular matrix part for symmetric, Hermitian, triangular, and block-triangular matrices:
SPARSE_FILL_MODE_LOWER
The lower triangular matrix part is processed.
SPARSE_FILL_MODE_UPPER
The upper triangular matrix part is processed.
sparse_diag_type_t
diag
 - Specifies diagonal type for non-general matrices:
SPARSE_DIAG_NON_UNIT
Diagonal elements might not be equal to one.
SPARSE_DIAG_UNIT
Diagonal elements are equal to one.
diag
Specifies diagonal type for non-general matrices
mode
Specifies the triangular matrix part for symmetric, Hermitian, triangular, and block-triangular matrices.
type
Specifies the type of a sparse matrix.
expected_calls
Estimate of the number to the execution routine.
Output Parameters
A
Handle containing internal data.
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.

Product and Performance Information

1

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