[petsc-users] VecView and MatView Question

[Peter Zhoujie Lyu]

Okay, thanks. My output file is for debugging purpose. I need to check the
possible errors at much higher digits, where VecView cut off at 6 digits
for my case. I will try out HDF5 output then.

Thanks,

Peter

On Tue, Oct 23, 2012 at 9:51 AM, Matthew Knepley <knepley at gmail.com> wrote:

> On Tue, Oct 23, 2012 at 9:49 AM, Peter Zhoujie Lyu <lzj at umich.edu> wrote:
>
>> Hi everyone,
>>
>> My code dumps petsc vec and mat into an output file using VecView and
>> MatView. I was wondering if there is any way to set the format, such as
>> number of digits that was showing in the output file?
>>
>>       call
>> PetscViewerASCIIOpen(PETSC_COMM_WORLD,"dJdWd.output",viewer,PETScIerr)
>>       call PetscViewerSetFormat(viewer,PETSC_VIEWER_ASCII_INDEX,PetscIerr)
>>       call VecView(dJdW,viewer,PETScIerr)
>>
>
> There is not. Our intention for ASCII output is debugging only. For
> production, we suggest using
> the binary output which is smaller and faster, or perhaps the HDF5 for
> which many good tools exist.
>
>   Thanks,
>
>     Matt
>
>
>> Thanks,
>>
>> Peter
>>
>
>
>
> --
> 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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