[petsc-users] PETSC Matrix debugging

Matthew Knepley knepley at gmail.com
Mon Apr 1 13:18:33 CDT 2024


On Mon, Apr 1, 2024 at 1:57 PM Shatanawi, Sawsan Muhammad via petsc-users <
petsc-users at mcs.anl.gov> wrote:

> Hello everyone, I hope this email finds you well. Is there a way we can
> check how the matrix looks like after setting it. I have tried debugging it
> with gdb- break points- and print statements, but it only gave me one value
> instead of a matrix.
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> Hello everyone,
>
> I hope this email finds you well.
>
> Is there a way we can check how the matrix looks like after setting it.
> I have tried debugging it with gdb- break points- and print statements,
> but it only gave me one value instead of a matrix.
>
> Thank you in advance for your time and assistance.
>
> I usually use MatView(), which can print to the screen. Is that what you
want?

  Thanks,

     Matt

> Best regards,
>
>  Sawsan
>
>

-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener

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