dolfin team mailing list archive

["Garth N. Wells" <gnw20@xxxxxxxxx>]

On 24 October 2011 12:57, Johannes Ring <johannr@xxxxxxxxx> wrote:
> This failure was expected and not Martin's fault.The problem is the
> stokes-iterative C++ demo, which is problematic when run in parallel
> (parallel testing has been turned off on this buildbot slave until
> now).
>
> I have done some manual testing with two and up to five processes and
> the demo fails only (but not always) when run with three or five
> processes. Sometimes I get a segmentation violation:
>
> [1]PETSC ERROR:
> ------------------------------------------------------------------------
> [1]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation,
> probably memory access out of range
> [1]PETSC ERROR: Try option -start_in_debugger or -on_error_attach_debugger
> [1]PETSC ERROR: or see
> http://www.mcs.anl.gov/petsc/petsc-as/documentation/troubleshooting.html#Signal[1]PETSC
> ERROR: or try http://valgrind.org on GNU/linux and Apple Mac OS X to
> find memory corruption errors
> [1]PETSC ERROR: configure using --with-debugging=yes, recompile, link, and run
> [1]PETSC ERROR: to get more information on the crash.
> [1]PETSC ERROR: --------------------- Error Message
> ------------------------------------
> [1]PETSC ERROR: Signal received!
> [1]PETSC ERROR:
> ------------------------------------------------------------------------
>
> Other times I get this error:
>
> Warning -- row partitioning does not line up! Partitioning incomplete!
> [2]PETSC ERROR: MatHYPRE_IJMatrixCreate() line 76 in src/dm/da/utils/mhyp.c
> [2]PETSC ERROR: PCSetUp_HYPRE() line 112 in src/ksp/pc/impls/hypre/hypre.c
> [2]PETSC ERROR: PCSetUp() line 795 in src/ksp/pc/interface/precon.c
> [2]PETSC ERROR: KSPSetUp() line 237 in src/ksp/ksp/interface/itfunc.c
> [2]PETSC ERROR: KSPSolve() line 353 in src/ksp/ksp/interface/itfunc.c
> Process 2: Soln norm: 0
>
> Any ideas? Is it a bug in DOLFIN? The demo works fine in parallel when
> using Trilinos instead of PETSc.
>

There is a very nasty  bug in the Oneiric OpenMPI. I had a frustrating
week tracking this down.

Installing OpenMPI 1.4.4 manually does the trick.

Garth

> BTW, the slave was recently upgraded to Ubuntu Oneiric and all
> dependencies are installed from the official package archive (except
> MTL4).
>
> Johannes
>
> On Mon, Oct 24, 2011 at 1:03 PM,  <buildbot@xxxxxxxxxx> wrote:
>> The Buildbot has detected a new failure of dolfin-oneiric-i386 on FEniCS Buildbot.
>> Full details are available at:
>>  http://fenicsproject.org:8080/builders/dolfin-oneiric-i386/builds/4
>>
>> Buildbot URL: http://fenicsproject.org:8080/
>>
>> Buildslave for this Build: oneiric-i386
>>
>> Build Reason:
>> Build Source Stamp: HEAD
>> Blamelist: Martin Sandve Aln=C3=A6s
>>
>> BUILD FAILED: failed dolfin check
>>
>> sincerely,
>>  -The Buildbot
>>
>>
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>
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