[mpich-discuss] Problem with spawning child with same executable name

[Yauheni Zelenko]

Hi!

Thanks Darius for pointing me to error in my sample program!

I made it a little bet more complicated to simulate real situation where master process will create subtasks, launch children, wait for their output and then repeat process several times.

Then I run program with Hydra: mpiexec -host "host1:2,host2:2"

Master process is run on host1. At first spawn 1 child was run on host1 and 2 on host2, but on consequent spawns, 2 children was on host1 and 1 on host2.

I think such resources allocation may create balancing problems and Hydra should not spawn children processes on hosts still in use.

Eugene.
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