Hi,

Am 13.11.2014 um 18:09 schrieb Doan Trung Tung:

> I have OSG installed as a role on Rock cluster installation for a cluster of 
> 16 nodes, each node has 16 processors. I'm new with OSG so I let everything 
> in default.
> When I submit mpi-ring example using qsub, if the number of slots is less 
> than or equal to 16, all threads are run on a single random node. So I 
> increase the number of slots to a number that larger than 16 hoping that they 
> will run on different nodes, but actually they get errors.
> 
> Here is the script I used to submit mpi-ring:
> #!/bin/bash
> 
> #$ -cwd
> #$ -S /bin/bash
> #$ -j y
> #$ -pe orte 8
> mpirun $HOME/testmpi/mpi-ring

What mpi-ring in detail - where is the source resp. from what MPI library?

-- Reuti


> (orte is one of 4 default parallel environments the system has)
> 
> If I change the number of slots to 17 instead of 8, I get this error:
> APPLICATION TERMINATED WITH THE EXIT STRING: Segmentation fault (signal 11)
> also a stranged file was produced: core.xxxx
> 
> Why do I cannot submit more thatn 16 slots?
> 
> Thanks.
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