Hi Leonardo
It depends on how many "slots" (a.k.a. CPUs/cores) you have per node.
You can add the flag "-bynode" to the mpiexec command line
to force it to run on different nodes.
"man mpiexec" is a helpful source of information about these things.
I hope this helps.
Gus Correa
---
Sorry If I misunderstood but, Should the mpirun -np4 hostname command return
all the machines no the openmpi-default-hostfile?
My host file has just two ips, the first is the server and the second a
node.
192.168.0.1
192.168.0.3
It just return the name of my server 4 times.
The same happens wit
You might want to try something simpler than java to start with. For example:
mpirun -np 4 hostname
(where hostname is the POSIX command line app, not an MPI app)
You should see the hostnames from the first 4 hosts in your hostfile (assuming
each one of them has 1 process slot). Then try runn
