ALLAH
Dear Michael,
our OSCAR cluster has 18 nodes with 8 cpus per node so 
it has 144 cpus(xeon e5335*2)
I am running pwscf ((it is open source (pwscf.org)) by 
mpich2.But there is a problem when i improve unmber of 
cpus per nodes in my calculation, the program stop with no
error showing. I am sure that not my ram overloade. because when 
i run a pwscf program in one of my nodes(as shared memory 
machine with 8 cpus) it works completely.
Do u have any opinion a bout this problem?(i have a gigabit 
ethernet.)
regards siamak jadidi

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