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From: Ake Sandgren (ake.sandgren_at_[hidden])
Date: 2006-10-28 11:00:54


On Sat, 2006-10-28 at 08:45 -0400, Jeff Squyres wrote:
> Sorry for the delay on this -- is this still the case with the OMPI
> trunk?
>
> We think we finally have all the issues solved with MPI_ABORT on the
> trunk.
>

Nah, it was a problem with overutilization, i.e. 4tasks on 2 cpus in one
node.
Turning on yield_when_idle made the problem go away.
As to why it didn't figure this out by itself is another problem.

Summary: 1.1.2 works correctly, no problems.
(Except when building with PGI, i have patches...)

> >> Lets add some more data to this...
> >> BLACS 1.1p3
> >> Ubuntu Dapper 6.06
> >> dual opteron
> >> gcc 4.0
> >> gfortran 4.0 (for both f77 and f90)
> >> standard tests with 4 tasks on one node (i.e. 2 tasks per cpu)
> >>
> >> OpenMPI 1.1.2rc3
> >> The tests comes to a complete standstill at the integer bsbr tests
> >> It consumes cpu all the time but nothing happens.
> >
> > Actually if i'm not too inpatient i will progress but VERY slowly.
> > A complete run of the blacstest takes +30min cpu-time...
> >> From the bsbr tests and onwards everything takes "forever".

-- 
Ake Sandgren, HPC2N, Umea University, S-90187 Umea, Sweden
Internet: ake_at_[hidden]   Phone: +46 90 7866134 Fax: +46 90 7866126
Mobile: +46 70 7716134 WWW: http://www.hpc2n.umu.se