MatSeqAIJGetCSRAndMemType#
Get the CSR arrays and the memory type of the MATSEQAIJ
matrix
Synopsis#
#include "petscmat.h"
PetscErrorCode MatSeqAIJGetCSRAndMemType(Mat mat, const PetscInt *i[], const PetscInt *j[], PetscScalar *a[], PetscMemType *mtype)
Not Collective; No Fortran Support
Input Parameter#
mat - a matrix of type
MATSEQAIJ
or its subclasses
Output Parameters#
i - row map array of the matrix
j - column index array of the matrix
a - data array of the matrix
mtype - memory type of the arrays
Notes#
Any of the output parameters can be NULL
, in which case the corresponding value is not returned.
If mat is a device matrix, the arrays are on the device. Otherwise, they are on the host.
One can call this routine on a preallocated but not assembled matrix to just get the memory of the CSR underneath the matrix.
If the matrix is assembled, the data array a
is guaranteed to have the latest values of the matrix.
See Also#
Level#
developer
Location#
Implementations#
MatSeqAIJGetCSRAndMemType_SeqAIJKokkos() in src/mat/impls/aij/seq/kokkos/aijkok.kokkos.cxx
MatSeqAIJGetCSRAndMemType_SeqAIJCUSPARSE() in src/mat/impls/aij/seq/seqcusparse/aijcusparse.cu
MatSeqAIJGetCSRAndMemType_SeqAIJHIPSPARSE() in src/mat/impls/aij/seq/seqhipsparse/aijhipsparse.hip.c
Index of all Mat routines
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Index of all manual pages