[mpich-discuss] valgrind warning in MPIR_Process_status

[Kenneth Raffenetti]

This fix has been pushed into the main MPICH repo.

Ken

On 01/11/2016 06:44 AM, VandeVondele  Joost wrote:
> I can confirm that Daniel's patch also fixes the issue I was seeing.
>
> Thanks for the quick resolution.
>
>
> ------------------------------------------------------------------------
> ------------------------------------------------------------------------
> *From:* Jeff Hammond [jeff.science at gmail.com]
> *Sent:* Monday, January 11, 2016 6:51 AM
> *To:* discuss at mpich.org
> *Subject:* Re: [mpich-discuss] valgrind warning in MPIR_Process_status
>
> To be explicit, the other thread is
> http://lists.mpich.org/pipermail/devel/2016-January/000677.html and it
> is indeed the same issue.
>
> I pushed dibanez-helper_fns-valgrind to mpich-review just now.
> https://trac.mpich.org/projects/mpich/ticket/2328 was created for
> tracking purposes.
>
> Jeff
>
> On Sun, Jan 10, 2016 at 5:04 PM, Jeff Hammond <jeff.science at gmail.com
> <mailto:jeff.science at gmail.com>> wrote:
>
>     I think this is the same issue reported on the devel list yesterday.
>     If it is, Daniel Ibanez provided a patch that I've merged into my
>     (completely unofficial fork on github) and will push to the official
>     MPICH review repo tonight.
>
>     If you want to try and/or verify Daniel'spatch, see
>     github/jeffhammond/mpich. The branch you want should be obvious from
>     the name (I can't remember what it is off hand).
>
>     Best,
>
>     Jeff
>
>
>     On Sunday, January 10, 2016, VandeVondele Joost
>     <joost.vandevondele at mat.ethz.ch
>     <mailto:joost.vandevondele at mat.ethz.ch>> wrote:
>
>         Hi,
>
>         we upgraded from mpich 3.1.2 to 3.2 and our nightly builds under
>         valgrind show a new valgrind warning, which I suppose originates
>         from the mpi library, rather than our code (given the stack
>         trace below and the fact that they are absent with 3.1):
>
>         There are two slightly distinct traces (alltoall and alltoallv):
>
>         ==30165== Conditional jump or move depends on uninitialised value(s)
>         ==30165==    at 0x6E00056: MPIR_Process_status (mpiimpl.h:4394)
>         ==30165==    by 0x6E00056: MPIC_Waitall (helper_fns.c:774)
>         ==30165==    by 0x6D5A853: MPIR_Alltoall_intra (alltoall.c:369)
>         ==30165==    by 0x6D5B63C: MPIR_Alltoall (alltoall.c:564)
>         ==30165==    by 0x6D5B6EF: MPIR_Alltoall_impl (alltoall.c:599)
>         ==30165==    by 0x6D5BF07: PMPI_Alltoall (alltoall.c:722)
>         ==30165==    by 0x6AFF0DC: PMPI_ALLTOALL (alltoallf.c:276)
>         ==30165==    by 0x1D04699: __message_passing_MOD_mp_alltoall_i22
>
>         ==30201== Conditional jump or move depends on uninitialised value(s)
>         ==30201==    at 0x6E00056: MPIR_Process_status (mpiimpl.h:4394)
>         ==30201==    by 0x6E00056: MPIC_Waitall (helper_fns.c:774)
>         ==30201==    by 0x6D5C4EA: MPIR_Alltoallv_intra (alltoallv.c:194)
>         ==30201==    by 0x6D5CEC9: MPIR_Alltoallv (alltoallv.c:339)
>         ==30201==    by 0x6D5CFAA: MPIR_Alltoallv_impl (alltoallv.c:376)
>         ==30201==    by 0x6D5D8CA: PMPI_Alltoallv (alltoallv.c:527)
>         ==30201==    by 0x6AFF13E: PMPI_ALLTOALLV (alltoallvf.c:276)
>         ==30201==    by 0x1CCE180:
>         __message_passing_MOD_mp_alltoall_z22v (message_passing_z.f90:223)
>
>         Is this issue already known/fixed ?
>
>         I saw there was a somewhat related change (which is part of 3.2):
>
>         https://trac.mpich.org/projects/mpich/changeset/be7c17b3177ccb0ede49761b44a438952360b061
>
>         but maybe that change was not fully complete ?
>
>         Best regards,
>
>         Joost VandeVondele
>
>         ------------------------------------------------------------------------
>         Prof. Dr. Joost VandeVondele
>         Nanoscale Simulations
>
>         ETH Zurich
>         HIT G 41.4
>         Wolfgang-Pauli-Strasse 27
>         8093 Zurich, Switzerland
>
>         Joost.VandeVondele at mat.ethz.ch
>         http://www.nanosim.mat.ethz.ch/
>         Tel.: +41 (0)44 6338451
>         ------------------------------------------------------------------------
>
>
>
>     --
>     Jeff Hammond
>     jeff.science at gmail.com <mailto:jeff.science at gmail.com>
>     http://jeffhammond.github.io/
>
>
>
>
> --
> Jeff Hammond
> jeff.science at gmail.com <mailto:jeff.science at gmail.com>
> http://jeffhammond.github.io/
>
>
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