Visible to Intel only — GUID: GUID-9F6B3A67-07D4-4826-8482-B4F86498E5B2
Visible to Intel only — GUID: GUID-9F6B3A67-07D4-4826-8482-B4F86498E5B2
mkl_sparse_set_mm_hint
Provides estimate of number and type of upcoming matrix-matrix multiplication operations.
Syntax
stat = mkl_sparse_set_mm_hint (A, operation, descr, layout, dense_matrix_size, expected_calls)
Include Files
- mkl_spblas.f90
Description
The mkl_sparse_set_mm_hint routine provides an estimate of the number of upcoming matrix-matrix multiplication operations and type of these operations for performance optimization purposes.
Product and Performance Information |
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Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex. Notice revision #20201201 |
Input Parameters
- operation
-
C_INT.
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.
- descr
-
MATRIX_DESCR.
Descriptor specifying sparse matrix properties.
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.
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.
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. - layout
-
C_INT.
Specifies layout of elements:
SPARSE_LAYOUT_COLUMN_MAJOR
Storage of elements uses column major layout.
SPARSE_LAYOUT_ROW_MAJOR
Storage of elements uses row major layout.
- dense_matrix_size
-
C_INT.
Number of columns in dense matrix.
- expected_calls
-
C_INT.
Number of expected calls to execution routine.
Output Parameters
- A
-
SPARSE_MATRIX_T.
Handle containing internal data.
- stat
-
INTEGER
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.