On May 1, 2006, at 1:58 PM, Brignone, Sergio wrote:
I've been using open-mpi in Solaris for a while and now I need to use
open-mpi in AIX.
I compiled the latest stable open-mpi version and run one of the
simplest possible tests (see hello0.c in attached zip)
To my surprise, it didn't show anything to the screen when running
with
mpirun:
mainaix:/xahome/userx> ./hello0
Process 0 of 1 is on ecc1ap04
Process 0 says Hello Word!
mainaix:/xahome/userx > mpirun -n 4 hello0
mainaix:/xahome/userx >
I also tried with stderr instead of stdout and I got the same result.
Now, if I open a file and stream the output to the file (I just
used one
file per process, I didn't use mpi-io), it works!
Any ideas about the reason of this behavior?
It's possible that we broke pty handling on AIX. Just out of
curiosity, what happens if you try something like:
mpirun -np 1 uptime | cat
This will cause mpirun to think stdout is connected to a pipe instead
of a pty, so we won't try to use our pty code (and default to
standard pipes for stdio forwarding).
Brian
--
Brian Barrett
Open MPI developer
http://www.open-mpi.org/
