Actually, I suspect the problem is that you don't have PMI running on the machine. The processes have no reason to be opening sockets for the OOB on a Cray XE6, and if you look at that platform file, it defines the location of the PMI libraries that are required.

Since it built, I expect the libraries were found. However, you should check to ensure your sys admin actually has PMI running.


On Wed, Oct 10, 2012 at 7:46 AM, Reuti <reuti@staff.uni-marburg.de> wrote:
Hi,

Am 10.10.2012 um 14:50 schrieb Christoph Niethammer:


> I just tried to use Open MPI 1.7a1r27416 on a Cray XE6 system. Unfortunately I get the following error when I run a simple HelloWorldMPI program:
>
> $ pirun HelloWorldMPI
> App launch reported: 2 (out of 2) daemons - 0 (out of 32) procs
> ...
> [unset]:_pmi_alps_get_appLayout:pmi_alps_get_apid returned with error: Bad file descriptor
> [nid01766:20603] mca_oob_tcp_init: unable to create IPv4 listen socket: Unable to open a TCP socket for out-of-band communications
> ...
>
>
> The installation was configured with the following command:
>
> ./configure --with-platform=contrib/platform/lanl/cray_xe6/optimized-nopanasas --prefix=$HOME/bin/mpi/openmpi/1.7a1r27416

you are doing it local on the headnode only? It includes --with-alps by the platform file and there is the command `aprun` instead of `mpiexec` in the jobscript on a Cray. Maybe the allocation needs to be granted first.

-- Reuti


> I would be very happy if anybdy has an idea, what I could have missed during installation/runtime.
>
> Thanks in advance.
>
> Best regards
> Christoph
>
>
> --
>
> Christoph Niethammer
> High Performance Computing Center Stuttgart (HLRS)
> Nobelstrasse 19
> 70569 Stuttgart
>
> Tel: ++49(0)711-685-87203
> email: niethammer@hlrs.de
> http://www.hlrs.de/people/niethammer
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