[mpich-discuss] mpiexec : multi nodes and multi-cores questions

Nicholas Yue yue.nicholas at gmail.com
Fri May 6 11:11:42 CDT 2022


  I am using mpiexec from Paraview which from the `help` print out,
indicates that it is derived from MPICH

Please see the intructions provided at
for further details

  so I thought I might ask some questions on this mailing list.

  I have set up a two node cluster, each compute node has 4 cores

  To fully utilise all the cores in both nodes, is this the correct way to
launch pvserver ?

-hosts compute0,compute1 -np 8

  If I change to `-np 4` would mpiexec use only compute0 or would it still
run on both compute0 and compute1 but use only 2 cores of each node ?

Nicholas Yue
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