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Subject: Re: [OMPI users] question to MPI_UNIVERSE_SIZE
From: Ralph Castain (rhc_at_[hidden])
Date: 2012-09-19 22:57:43


Yep, that was a bug - fixed. Thanks!

On Sep 18, 2012, at 10:30 PM, Siegmar Gross <Siegmar.Gross_at_[hidden]> wrote:

> Hi,
>
> I have a small hostfile with the following two lines.
>
> tyr.informatik.hs-fulda.de slots=2
> sunpc4.informatik.hs-fulda.de slots=2
>
> I get the following output from a small program when I set my
> environment for openmpi-1.6.
>
> tyr small_prog 106 mpiexec -hostfile hosts.openmpi_fulda -np 2 universe
>
> number of processes: 2 universe size: 4
>
> When I do the same for the last tarball of openmpi-1.9 I get the
> following output so that "universe size" doesn't show the number of
> available processors any longer.
>
> tyr small_prog 108 mpiexec -hostfile hosts.openmpi_fulda -np 2 universe
>
> number of processes: 2 universe size: 2
>
> Have you changed the implementation so that this is intended? Thank you
> very much for any answer in advance.
>
>
> Kind regards
>
> Siegmar
>
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