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mpirun gives error when run whithin a cpuset


I've have errors using mpirun whitin any cpuset (but the /root)

The following mpirun is executed from a login shell which belongs to a cpuset manually created under the /root one:
mpirun -np 8 wam 
/opt/intel/impi/ line 390: 15578 Floating point exceptionmpiexec.hydra "$@" 0<&0

The same error happens whichever -np is, also without -np flags.
If the same command is executed when no cpusets are manually created (thus it will belong to the /root cpuset), then mpirun works like a charms.

Can anybody help me?
thanks from Italy,

Emanuele Lombardi

Intel(R) MPI Library for Linux* OS, Version 4.1.0 Build 20120831
ifort (IFORT) 13.0.1 20121010
SLES11 x86_64  Kernel: 3.0.74-0.6.6-default
SGI UV2000 server


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Black Belt

Questions on Intel MPI usage are more likely to get expert answers on the cluster and HPC forum.