PETSc version 3.16.6
MatSetPreallocationCOO
set preallocation for matrices using a coordinate format of the entries
Synopsis
#include "petscmat.h"
PetscErrorCode MatSetPreallocationCOO(Mat A,PetscInt ncoo,const PetscInt coo_i[],const PetscInt coo_j[])
Collective on Mat
Input Parameters
| A | - matrix being preallocated
|
| ncoo | - number of entries in the locally owned part of the parallel matrix
|
| coo_i | - row indices
|
| coo_j | - column indices
|
Notes: Entries can be repeated, see MatSetValuesCOO(). Currently optimized for cuSPARSE matrices only.
See Also
MatSetValuesCOO(), MatSeqAIJSetPreallocation(), MatMPIAIJSetPreallocation(), MatSeqBAIJSetPreallocation(), MatMPIBAIJSetPreallocation(), MatSeqSBAIJSetPreallocation(), MatMPISBAIJSetPreallocation()
Level
beginner
Location
src/mat/utils/gcreate.c
Implementations
MatSetPreallocationCOO_MPIAIJCUSPARSE in src/mat/impls/aij/mpi/mpicusparse/mpiaijcusparse.cu
MatSetPreallocationCOO_SeqAIJCUSPARSE in src/mat/impls/aij/seq/seqcusparse/aijcusparse.cu
Index of all Mat routines
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Index of all manual pages