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I am doing specific tests on matrices, so forgive me if this question doesn't seem related to Petsc typical use.

I have a SEQAIJ matrix on one process and I need to send it to another one. Is there a Petsc routine that enables this ?

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I don't think PETSc supports it. PETSc really thinks in parallel, so it converts at most between distributed matrices and sequential matrices through submatrix taking operations. I would MatGetArray and send that with an MPI call.

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  • $\begingroup$ Thanks for your input. I used MPI calls and it worked ok. $\endgroup$
    – matthiasbe
    Aug 9, 2019 at 9:17

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