[petsc-users] PETSC Matrix debugging

[Barry Smith]

  Note, you can also run with the option -mat_view and it will print each matrix that gets assembled.

  Also in the debugger you can do call MatView(mat,0)



> On Apr 1, 2024, at 2:18 PM, Matthew Knepley <knepley at gmail.com> wrote:
> 
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> On Mon, Apr 1, 2024 at 1:57 PM Shatanawi, Sawsan Muhammad via petsc-users <petsc-users at mcs.anl.gov <mailto:petsc-users at mcs.anl.gov>> wrote:
>> This Message Is From an External Sender
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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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