[mpich-discuss] wrong number of processes on host

[bruno.guerraz at orange.com]

Hi, I am using mpich on a hadoop cluster with yarn. It is not a smooth 
integration but it is working.
Flowing an old post, I am using the manual launcher and the option 
-disable-hostname-propagation 
(https://lists.mpich.org/mailman/htdig/devel/2016-July/000717.html)

The command line to launch by binary is :

mpiexec -launcher manual -disable-hostname-propagation -n 6 -f ./hosts 
/path/to/my/bin

And the file hosts contains

host1:2
host2:2
host3:2

I expect to have 2 processes on each host but most of the time it 
launches 3 processes on host1, 1 on host2 and 2 on host3
Any ideas?

Bruno

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