[mpich-discuss] hydra_pmi_proxy: No such file

[Martin Gilchrist]

Hi.  
 
This is my first time using mpi-discuss, so if this is the wrong location for my question please let me know.
 
I am trying to run the "cpi" program and am getting the message:  
 
 bash: /mirror/mpich2/bin/hydra_pmi_proxy: No such file or directory.
 
I have set up a 2 machine "cluster" using the directions from the Ubuntu documentation at:
 
 
   https://help.ubuntu.com/community/MpiClusterUbuntu
 
 
I can ssh into each machine from the other. 
 
which mpiexec 
 
returns 
 
/mirror/mpich2/bin/mpiexec 
 
so the file is there.
 
My guess is that hydra should be running on all nodes but when I do a ps aux | grep hydra  I do not see that it is running.
 
Have I missed something obvious?
 
Thanks.
Martin
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