[petsc-users] error related to 'valgrind' when using MatView

[Barry Smith]

  New error checking to prevent this confusion in the future: https://gitlab.com/petsc/petsc/-/merge_requests/6804


> On Aug 10, 2023, at 6:54 AM, Matthew Knepley <knepley at gmail.com> wrote:
> 
> On Thu, Aug 10, 2023 at 2:30 AM maitri ksh <maitri.ksh at gmail.com <mailto:maitri.ksh at gmail.com>> wrote:
>> I am unable to understand what possibly went wrong with my code, I could load a matrix (large sparse matrix) into petsc, write it out and read it back into Matlab but when I tried to use MatView to see the matrix-info, it produces error of some 'corrupt argument, #valgrind'. Can anyone please help?
> 
> You use
> 
>   viewer = PETSC_VIEWER_STDOUT_WORLD
> 
> but then you Destroy() that viewer. You should not since you did not create it.
> 
>   THanks,
> 
>      Matt
>  
>> Maitri
> 
> 
> -- 
> 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
> 
> https://www.cse.buffalo.edu/~knepley/ <http://www.cse.buffalo.edu/~knepley/>

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