[petsc-users] How to have a local copy (sequential) of a parallel matrix

ehsan sadrfaridpour it.sadr at gmail.com
Wed Jun 29 13:43:12 CDT 2016


Hi,

I need to have access to most of elements of a parallel MPIAIJ matrix only
from 1 process (rank 0).
I tried to copy or duplicate it to SEQAIJ, but I faced problems.

How can I have a local copy of a matrix which is distributed on multiple
process? I don't want to update the matrix, and the read-only version of it
would be enough.

Best,
Ehsan
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