[petsc-users] Collective abort of all ranks

[Matthew Knepley]

On Fri, Jul 9, 2010 at 12:42 AM, Немања Илић (Nemanja Ilic) <
nemanja.ilic.81 at gmail.com> wrote:

> Hello,
>
> I am developing a PETSc application and I encountered the following
> problem:
> My parallel program does everything ok, finishes the meaningful job, and
> near the end it breaks with the following line:
>
> "rank 0 in job 17  wg_49925   caused collective abort of all ranks
>  exit status of rank 0: killed by signal 9"
>
> It happends regardless of number of processes in the job.
>
> Here is the ending of the function 'calculate' which does the work:
>
>      "....
>        // write result to file
>        PetscViewer viewer;
>        ierr = PetscViewerASCIIOpen(PETSC_COMM_WORLD, output_file_name,
> &viewer); CHKERRQ(ierr);
>        ierr = PetscViewerSetFormat(viewer, PETSC_VIEWER_ASCII_COMMON);
> CHKERRQ(ierr);
>        ierr = VecView(bp, viewer); CHKERRQ(ierr);
>
>
>        // clean-up
>        ierr = MatDestroy(Ap); CHKERRQ(ierr);
>        ierr = VecDestroy(bp); CHKERRQ(ierr);
>        ierr = VecDestroy(xp); CHKERRQ(ierr);
>
>        free(col);
>        free(row);
>        free(row_values);
>

Did you malloc() or PetscMalloc() these? You cannot free() stuff you get
from PetscMalloc().

   Matt


>        return b;"
>
> The file 'viewer' is outputed correctly.
> When 'calculate' finishes the finalization function gets called:
>        "ierr = PetscFinalize(); CHKERRQ(ierr);"
>
> Does anyone have any idea to why my program breaks?
>
> Thank you in advance,
> Best regards,
> Nemanja Ilic
>
> PS
> Sorry if this is not the right place for my question :)
>



-- 
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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