PETSc version 3.15.4
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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 Arguments

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

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