The only way to get that OOB error is if PMI isn't running - hence my earlier note. If PMI isn't actually running, then we fall back to the TCP OOB and try to open sockets - which won't work because the app is being direct-launched.
Alternatively, he could launch using "mpirun" and then it should work just fine.
On Wed, Oct 10, 2012 at 02:50:59PM +0200, Christoph Niethammer wrote:There is a bug in Cray's PMI-3 which causes this error message. Change the platform file to point at PMI 2.1.4. I was hoping Cray would fix the bug before 1.7.0. Since that doesn't appear to be the case I will push updated platform files that use PMI 2.1.4 instead of the default.
> 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
Never seen this error before. What PE release is installed?
> [nid01766:20603] mca_oob_tcp_init: unable to create IPv4 listen socket: Unable
> to open a TCP socket for out-of-band communications
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