On May 9, 2020, at 2:24 AM, Martin Ivanov <marto1980@gmail.com> wrote:

Hello Tony,

Thank you very much for your reply. I followed your advice and gave the hostname 'dragonfly' to my machine. Then, in /etc/hosts I provided gave the alias 'dragonfly' to localhost as you suggested:

"

marto@dragonfly% cat /etc/hosts

::1                     localhost dragonfly
127.0.0.1               localhost dragonfly

"

I compiled both the icpi and hellow examples. Now mpiexec seems to work, although not as reliably as I might wish. Running any of the examples with one core like this:

mpiexec -n 1 mpich-3.0.4/examples/hellow

is always successful. I could never get the command to finish with 2, 3, or 4 cores: it simply hangs. E.g. with 2 cores after running the above command I get:

"

marto@dragonfly% ps x | grep hellow
166493 ??  I6s      0:00.00 mpich-3.0.4/examples/hellow
166494 ??  I6s      0:00.00 mpich-3.0.4/examples/hellow

"