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From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2007-02-08 08:37:27


We had previously done some AIX testing with OMPI, but it really
hasn't received much testing in long, long time. At this point, it
is probably safest to say that OMPI is unsupported on AIX.

Sorry. :-(

On Feb 7, 2007, at 3:18 PM, Nader Ahmadi wrote:

> We are in the process to decide, if we should use Open MPI in an
> AIX environment.
>
> Our in-house testing indicates that OMPI (V 1.1.x and V 1.2.x)
> stdio is broken under AIX.
>
> At this point, I am trying to find out if there is a fix or work-
> around for this problem. I have put another
>
> posting (see attached). One recommendation was try pre-release of V
> 1.2, which didn't make any difference.
>
> I am hoping that an OMPI developer or someone from IBM come up with
> a solution.
>
> Open MPI documentation, indicates that AIX is being supported, with
> limited testing before each release.
>
> What is limited testing? Does it mean, Configure, Install and
> running "Hello World" on one node?
>
> In short, we did configure and installed V 1.1.x as well as
> V1.2.x, but attempt to running
>
> a simple test such as "mpirun -np 1 hostname", fails, see attached
> for more details.
>
> I have eight nodes IBM systems, I could run any test, to solve
> this problem.
>
> Thanks for your comments
>
> Ali,
>
> ----------------------------------------------------------------------
> -----------------
>
> From Previous Posting on OMPI user's group
>
> ----------------------------------------------------------------------
> ------------------------------------
>
> I have installed Open MPI 1.1.2 on IBM AIX 5.3 cluster. It looks like
>
> terminal output is broken. There are a few entry in the OpenMPI
> archive for this problem,
>
> with no suggested solution or real work around.
>
> I am putting this posting with hope to get some advise for a work
> around or solution.
>
> #mpirun -np 1 hostname
>
> No out put, piping the command to "cat" or "more" generate no out
> put as well.
>
> The only way to get an output from this command is to add --debug-
> daemons
>
> #mpirun -np 1 --debug-daemons hostname
>
> Even this debug option is not working for a real application which
> generate several output.
>
> Looking forward for any comments.
>
> Thanks
>
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-- 
Jeff Squyres
Server Virtualization Business Unit
Cisco Systems