[mpich-discuss] rank 0 on one node

Jeff Hammond jhammond at alcf.anl.gov
Sun Sep 16 20:02:09 CDT 2012


Why are you wasting the 7 ranks on the master node?  For the memory?

Just figure out your topology out-of-band and sleep the 7 unwanted
ranks on the host node while running 8 ppn.

Jeff

On Sun, Sep 16, 2012 at 3:21 PM, rigved sharma
<rigved.sharma123 at gmail.com> wrote:
> hi,
>
> i have intel mpi configured on our cluster where we are running the job in
> which it is required that only master process should execute on 1 node (1
> seperate node of 8 procs) and rest 63 processes on 63 procs (8 nodes of 8
> proc each). how it can be acieved.
>
> -ruchir b.
>
>
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-- 
Jeff Hammond
Argonne Leadership Computing Facility
University of Chicago Computation Institute
jhammond at alcf.anl.gov / (630) 252-5381
http://www.linkedin.com/in/jeffhammond
https://wiki.alcf.anl.gov/parts/index.php/User:Jhammond


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