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Subject: Re: [OMPI users] Problem with AlltoAll routine
From: Nysal Jan (jnysal_at_[hidden])
Date: 2008-05-17 15:46:16


Gabriele,
Can you try with Open MPI 1.2.6. It has a parameter to disable early
completion, set it to zero (-mca pml_ob1_use_early_completion 0).

--Nysal

On Wed, May 7, 2008 at 9:29 PM, Gabriele FATIGATI <g.fatigati_at_[hidden]>
wrote:

> I have attached informations requested about Infiniband net and OpenMPi
> enviroment. There is also LSF script used to launch the application.
>
> On Tue, 6 May 2008 21:30:17 -0500, Brad Benton said:
> >
> > Hello Gabriele,
> >
> > To help track down this problem, could I ask you to take a look at the
> Open
> > MPI "Getting Help" page?
> > http://www.open-mpi.org/community/help/
> >
> > In particular, if you could collect and send the information requested on
> > that page to the list, it will help us to better understand your
> > configuration and how others might reproduce the problem.
> >
> > Thanks & Regards,
> > --Brad
> >
> > Brad Benton
> > IBM
> >
> >
> > On Tue, May 6, 2008 at 10:35 AM, Gabriele FATIGATI <g.fatigati_at_[hidden]
> >
> > wrote:
> >
> > > Hi,
> > > i tried to run SkaMPI 5.0.4 benchmark on IBM-BladeCenterLS21 system
> with
> > > 256 processors over Infiniband 5 Gb/s, but test has stopped on
> > > "AlltoAll-length" routine, with count=2048 for some reason.
> > >
> > > I have launched test with:
> > > --mca btl_openib_eager_limit 1024
> > >
> > > Same tests with 128 processor or less, have finished successful.
> > >
> > > Different values of eager limit don't solve the problem. Version of
> > > OpenMPI involved is 1.2.5. There's someone with this kind of problem
> over
> > > Infiniband?
> > > Thanks in advance.
> > > --------------------------
> > > Gabriele Fatigati
> > >
> > > CINECA Systems & Tecnologies Department
> > >
> > > Supercomputing Group
> > >
> > > Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy
> > >
> > > www.cineca.it Tel: 39 051 6171722
> > >
> > > g.fatigati_at_[hidden]
> > > _______________________________________________
> > > users mailing list
> > > users_at_[hidden]
> > > http://www.open-mpi.org/mailman/listinfo.cgi/users
> > >
> >
>
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