petsc-master 2019-08-22
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MatMPISBAIJSetPreallocationCSR

Creates a sparse parallel matrix in SBAIJ format using the given nonzero structure and (optional) numerical values

Synopsis

#include "petscmat.h" 
PetscErrorCode  MatMPISBAIJSetPreallocationCSR(Mat B,PetscInt bs,const PetscInt i[],const PetscInt j[], const PetscScalar v[])
Collective

Input Parameters

B - the matrix
bs - the block size
i - the indices into j for the start of each local row (starts with zero)
j - the column indices for each local row (starts with zero) these must be sorted for each row
v - optional values in the matrix

Notes

Though this routine has Preallocation() in the name it also sets the exact nonzero locations of the matrix entries and usually the numerical values as well

Any entries below the diagonal are ignored

See Also

MatCreate(), MatCreateSeqAIJ(), MatSetValues(), MatMPIBAIJSetPreallocation(), MatCreateAIJ(), MPIAIJ

Level

advanced

Location

src/mat/impls/sbaij/mpi/mpisbaij.c

Implementations

MatMPISBAIJSetPreallocationCSR_MPISBAIJ in src/mat/impls/sbaij/mpi/mpisbaij.c

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