[petsc-users] Question on Matrix Product with DMDA Matrix

[Matthew Knepley]

On Wed, Jan 14, 2026 at 12:13 PM Micol Bassanini via petsc-users <
petsc-users at mcs.anl.gov> wrote:

> Dear User Support Team,
> I have a question regarding my project.
> I would like to compute a matrix product between a DMDA matrix that is
> distributed across multiple ranks and a dense matrix that is available on
> only a single processor. What is the recommended or standard approach for
> implementing this kind of operation?
>
It sounds like you should distribute your dense matrix. You might do it
using MatSetValues(), or MatCreateSubmatrix().

  Thanks,

     Matt

> Thank you in advance for your help.
> Best regards,
> Micol
>


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What most experimenters take for granted before they begin their
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