[petsc-users] petsc hangs

[Matthew Knepley]

On Fri, Jul 24, 2015 at 11:17 AM, Matthew Knepley <knepley at gmail.com> wrote:

> On Fri, Jul 24, 2015 at 11:09 AM, Aaron Kitzmiller <
> akitzmiller at g.harvard.edu> wrote:
>
>> Doesn't run.  Hangs just like the tests do.
>>
>> I doubt it's helpful, but when I run it under strace, it hangs on a
>> "futex".  The last thing vaguely informative was an attempt to read the
>> non-existent .petscrc.
>>
>
> Run in the debugger and get a stack trace.
>

Also futex does not appear in the PETSc source:

   knepley/feature-snes-deflation *+$|MERGING:/PETSc3/petsc/petsc-dev$ find
src -name "*.c" | xargs grep futex
   find src -name "*.c" | xargs grep futex

You have an MPI problem.

   Matt


>   Matt
>
>
>> ajk
>>
>> Aaron Kitzmiller
>> Informatics and Scientific Applications
>> aaron_kitzmiller at harvard.edu
>>
>>
>>
>> On Jul 24, 2015, at 11:21 AM, Matthew Knepley <knepley at gmail.com> wrote:
>>
>>   ./ex5 -snes_monitor
>>
>>
>>
>
>
> --
> 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
>



-- 
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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