[Beowulf] mpirun issue

[Luis Alejandro Del Castillo Riley]

hi fellows i have a cluster with 1 master 10 nodes with intel Xeon Quad
core.
Fedora core 6
PGI 7.0-7
mpich 1.2.5.2
machines.x86_64 with a 10 node names

when i try to run:
 mpirun -v -arch x86_64  -keep_pg -nolocal -np 9 mm5.mpp

i had no error but when a run with
 mpirun -v -arch x86_64  -keep_pg -nolocal -np 10 mm5.mpp

they take around 40 min to send me and error :
bm_list_4667: (1526.781250) wakeup_slave: unable to interrupt slave 0 pid
4666

somebody help
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