[petsc-users] MPICH error in KSPSolve

[John Mousel]

Mark,

I still haven't had much luck getting GAMG to work consistently for my
Poisson problem. ML seems to work nicely on low core counts, but I have a
problem where I can get long thin portions of grid on some processors
instead of nice block like chunks at high core counts, which leads to a
pretty tough time for ML.

John

On Mon, Jul 9, 2012 at 10:58 AM, John Mousel <john.mousel at gmail.com> wrote:

> Getting rid of the Hypre option seemed to be the trick.
>
> On Mon, Jul 9, 2012 at 10:40 AM, Mark F. Adams <mark.adams at columbia.edu>wrote:
>
>> Google PTL_NO_SPACE and you will find some NERSC presentations on how to
>> go about fixing this.  (I have run into these problems years ago but forget
>> the issues)
>>
>> Also, I would try running with a Jacobi solver to see if that fixes the
>> problem.  If so then you might try
>>
>> -pc_type gamg
>> -pc_gamg_agg_nsmooths 1
>> -pc_gamg_type agg
>>
>> This is a built in AMG solver so perhaps it plays nicer with resources ...
>>
>> Mark
>>
>> On Jul 9, 2012, at 10:57 AM, John Mousel wrote:
>>
>> > I'm running on Kraken and am currently working with 4320 cores. I get
>> the following error in KSPSolve.
>> >
>> > [2711]:
>> (/ptmp/ulib/mpt/nightly/5.3/120211/mpich2/src/mpid/cray/src/adi/ptldev.c:2046)
>> PtlMEInsert failed with error : PTL_NO_SPACE
>> > MHV_exe:
>> /ptmp/ulib/mpt/nightly/5.3/120211/mpich2/src/mpid/cray/src/adi/ptldev.c:2046:
>> MPIDI_CRAY_ptldev_desc_pkt: Assertion `0' failed.
>> > forrtl: error (76): Abort trap signal
>> > Image              PC                Routine            Line
>>  Source
>> > MHV_exe            00000000014758CB  Unknown               Unknown
>>  Unknown
>> > MHV_exe            000000000182ED43  Unknown               Unknown
>>  Unknown
>> > MHV_exe            0000000001829460  Unknown               Unknown
>>  Unknown
>> > MHV_exe            00000000017EDE3E  Unknown               Unknown
>>  Unknown
>> > MHV_exe            00000000017B3FE6  Unknown               Unknown
>>  Unknown
>> > MHV_exe            00000000017B3738  Unknown               Unknown
>>  Unknown
>> > MHV_exe            00000000017B2B12  Unknown               Unknown
>>  Unknown
>> > MHV_exe            00000000017B428F  Unknown               Unknown
>>  Unknown
>> > MHV_exe            000000000177FCE1  Unknown               Unknown
>>  Unknown
>> > MHV_exe            0000000001590A43  Unknown               Unknown
>>  Unknown
>> > MHV_exe            00000000014F909B  Unknown               Unknown
>>  Unknown
>> > MHV_exe            00000000014FF53B  Unknown               Unknown
>>  Unknown
>> > MHV_exe            00000000014A4E25  Unknown               Unknown
>>  Unknown
>> > MHV_exe            0000000001487D57  Unknown               Unknown
>>  Unknown
>> > MHV_exe            000000000147F726  Unknown               Unknown
>>  Unknown
>> > MHV_exe            000000000137A8D3  Unknown               Unknown
>>  Unknown
>> > MHV_exe            0000000000E97BF2  Unknown               Unknown
>>  Unknown
>> > MHV_exe            000000000098EAF1  Unknown               Unknown
>>  Unknown
>> > MHV_exe            0000000000989C20  Unknown               Unknown
>>  Unknown
>> > MHV_exe            000000000097A9C2  Unknown               Unknown
>>  Unknown
>> > MHV_exe            000000000082FF2D  axbsolve_                 539
>>  PetscObjectsOperations.F90
>> >
>> > This is somewhere in KSPSolve. Is there an MPICH environment variable
>> that needs tweaking? I couldn't really find much on this particular error.
>> > The solver is BiCGStab with Hypre as a preconditioner.
>> >
>> > -ksp_type bcgsl -pc_type hypre -pc_hypre_type boomeramg -ksp_monitor
>> >
>> > Thanks,
>> >
>> > John
>>
>>
>
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