mkl_graph_optimize_mxv
mkl_graph_optimize_mxv
Computes internal optimized data for a graph matrix to be used in a matrix-vector product.
Syntax
mkl_graph_status_t mkl_graph_optimize_mxv(mkl_graph_vector_t mask, mkl_graph_semiring_t semiring, mkl_graph_matrix_t A, mkl_graph_vector_t v, mkl_graph_descriptor_t desc, int64_t ncalls);
Include Files
- mkl_graph.h
Description
The
mkl_graph_optimize_mxv
routine computes internal optimized data for a graph matrix-vector product mkl_graph_mxv
. Input arguments match the definitions of the arguments for mkl_graph_mxv
. You can provide as much information about future calls to mkl_graph_mxv
as is known. If mask, input vector or descriptor is not known, NULL can be passed as a corresponding argument.The last argument,
ncalls
, estimates the number of calls to mkl_graph_mxv
with the matrix A
. More aggressive optimizations may be performed for large values of ncalls
. If such an estimate is not known, a negative value can be passed to use the default behavior.Currently the optimizations mainly target the matrix
A
. Optimized data are stored inside the graph matrix and will be deallocated once non-compatible matrix changes are made or when the matrix is destroyed via mkl_graph_matrix_destroy
.Input Parameters
- mask
- A graph vector which will be used as a mask inmkl_graph_mxv. If it is not known or will not be present in the operation, NULL can be passed.
- semiring
- A semiring which will be used inmkl_graph_mxv. Refer to Graph API Glossary for more details. If it is not known, any value frommkl_graph_semiring_tcan be used.
- A
- A graph matrix which will be used inmkl_graph_mxv. Must be known and not NULL.
- V
- A graph vector which will be used as input vector inmkl_graph_mxv. If it is not known or it will change between multiple calls tomkl_graph_mxv, NULL can be passed.
- desc
- A graph descriptor which will define additional modifiers formkl_graph_mxv. If it is not known, will change between calls tomkl_graph_mxv, or will not be used in calls tomkl_graph_mxv, NULL can be passed.
- ncalls
- An estimate on the number of calls to the matrix-vector product which will follow the call tomkl_graph_optimize_mxvwith the matrixA. If negative, the routine uses the default strategy.
Output Parameters
- A
- A graph matrix with the optimized data for a matrix-vector product.
Return Values
The function returns a value indicating whether the operation was successful or not and why. Refer to Graph API Glossary for a list of possible options.
Optimization Notice
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Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.
Notice revision #20110804
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This notice covers the following instruction sets: SSE2, SSE4.2, AVX2, AVX-512.