[petsc-users] VecView and MatView Question

[Peter Zhoujie Lyu]

Great! That works. Thanks a lot.

Peter

On Tue, Oct 23, 2012 at 1:49 PM, Barry Smith <bsmith at mcs.anl.gov> wrote:

>
>    Peter,
>
>      You can use PETSC_VIEWER_ASCII_MATLAB   this causes all the decimal
> digits to be printed (useful for debugging)
>
>    Barry
>
>
> Just ignore the fact that it is related to MATLAB.
>
>
> On Oct 23, 2012, at 9:08 AM, Peter Zhoujie Lyu <lzj at umich.edu> wrote:
>
> > 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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