What kind of VBR matrix? What are you partitioning using parmetis? A mesh? The blocks of the matrix? How do you create the entries in the matrix? On May 14, 2013 4:36 PM, "Longxiang Chen" <suifengls at gmail.com> wrote:
> To whom it may concern, > > I use parmetis to partition a mesh for a sparse matrix. > Then I distribute the data to the appropriate processors according to the > result of partition. > > The sparse matrix is stored in Variable Block Row(VBR) format. > After the distribution, I want to call PETSc KSP solver to solve Ax = b. > I tried to convert VBR to AIJ or CSR format, but the data would be > re-distributed. > > The ideal method is to keep the distribution result from parmetis. > For example, after parmetis, processor 0 has 0, 1, 4, and processor 1 has > 2, 3, 5. I wish the PETSc would not change this distribution and solve Ax > = b. > > Are there any approaches to call KSP solver in VBR format from PETSc? > Or any suggestions for solving Ax = b? > > Thanks in advance. > > Regards, > Longxiang Chen > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20130514/20a65efe/attachment.html>
