#include "petscmat.h" PetscErrorCode PETSCMAT_DLLEXPORT MatMPIAIJSetPreallocationCSR(Mat B,const PetscInt i[],const PetscInt j[], const PetscScalar v[])Collective on MPI_Comm
B | - the matrix | |
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: this actually copies the values from i[], j[], and a[] to put them into PETSc's internal storage format. Thus changing the values in a[] after this call will not effect the matrix values.
Level:developer
Location:src/mat/impls/aij/mpi/mpiaij.c
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