petsc-3.13.6 2020-09-29
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
Index of all Mat routines
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Index of all manual pages