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[tq02ksu <tq02ksu@163.com>]

jimprtlnd01@gmail.com wrote:
> Yes, that's actually very possible.  The one big rig has 8 processors and 8
> gigs of RAM, but the laptop (2 additional processors) has much less memory.
>
> Further evidence, I restarted then run on the big rig only with 8 procs.  CPU
> usage is hovering at 100% as expected.
>
> Thanks!
>
>   
Hello All:
I think it relaled to the communication device in the MPI implementation.
I user MPICH2 that i can specify the device manually. But i don't find 
the option in OPENMPI .