even if you can use the information from MatGetInfo(). However, you don't know d_nnz and o_nnz, right? Thanks.
Yujie On Fri, Feb 13, 2009 at 9:37 AM, Randall Mackie <rlmackie862 at gmail.com>wrote: > Yujie, > > This is explained in the manual on page 59, under Preallocation of Memory > for Parallel AIJ Sparse Matrices. > > Randy > > > Yujie wrote: > >> Hi, >> >> In MatCreateMPIAIJ() function, it needs d_nz, d_nnz[], o_nz, o_nnz[]. If >> one has a MATAIJ matrix, how to obtian this information? thanks a lot. >> >> PetscErrorCode PETSCMAT_DLLEXPORT MatCreateMPIAIJ(MPI_Comm comm,PetscInt >> m,PetscInt n,PetscInt M,PetscInt N,PetscInt d_nz,const PetscInt >> d_nnz[],PetscInt o_nz,const PetscInt o_nnz[],Mat *A) >> >> Regards, >> >> Yujie >> >> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20090213/dd6a8852/attachment.htm>
