errno 24 means "Too many open files".
Looks like you may be hitting the upper limit for the number of open file
descriptors.
Check /proc/sys/fs/file-max and see if you need to bump it up.
Not sure if you need to bump up "ulimit -n", but worth a try.

-Aleph

On 10/14/06, Adam Moody <mood...@llnl.gov> wrote:

Hello,
I'm trying to run a 500 node job using mpirun / slurm with OpenMPI-1.1.1
and see the following errors at startup:

[rhea342:09444] [0,1,318]-[0,0,0] mca_oob_tcp_peer_recv_blocking: recv()
failed with errno=104
[rhea32:13463] mca_oob_tcp_accept: accept() failed with errno 24.
[rhea32:13463] mca_oob_tcp_accept: accept() failed with errno 24.
[rhea326:09641] [0,1,302]-[0,0,0] mca_oob_tcp_peer_recv_blocking: recv()
failed with errno=104
...

I'm starting the job with the following commands:

srun -N 500 -A
mpirun -np 500 -bynode hello_mpi

Smaller jobs around 50 nodes run just fine.  Any ideas?
Thanks,
-Adam Moody
LLNL
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