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Single slot jobs are not allowed in these queues. There is also a limit on the total number of cores in use by the bulletmpi and bulletmpi-large queues. You can see what that limit is by running the command blimits which shows that there are 3072 slots total available to those 2 queues and at the moment of the command they are all in use:
renata@victoria $ 13:41 blimits -w
INTERNAL RESOURCE LIMITS:
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This version of mpi is the default on most of the public login machines. You can tell that this is the version that you will be running if you get the following response:
renata@rhel6-64f $ 15:38 which which mpirun
/usr/lib64/openmpi/bin/mpirun
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