Ursula, No worries, just glad I could get it to work. Sometimes it just takes someone to help think differently :) Thanks again. Ken On Apr 3, 2015, at 6:43 AM, Winkler, Ursula ([email protected]) <[email protected]> wrote:

...

I tried disabling the firewall real quick and still got the same results.

Disabling a potential error source for trial and error is always a good thing to isolate a problem.

However, at one point I got the following error: [proxy:0:1@Pi02] launch_procs (/home/pi/mpich2/mpich-3.1/src/pm/hydra/pm/pmiserv/pmip_cb.c:641): unable to change wdir to /home/pi/mpi_test (No such file or directory)

So I scratched my head and wondered if it was something as silly as the fact that I was calling mpiexec from a directory that existed on Pi01 and not on the other three. I quickly created the same directory on the other three Pis and bam:

pi@Pi01 ~/mpi_test $ mpiexec -f machinefile -n 4 hostname Pi01 Pi04 Pi03 Pi02

Was it really that simple?

Thanks.

Ken

Yes, That *IS* possible ! J As you mention it now – I had the same problem some years ago. Unfortunately I didn’t remember in time sparing you from dealing with the same trouble.

Ursula

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