Hello,
I used Brice's workaround and now mpirun works well in all computers !
Thank you all for your help
Jorge
Le 14/11/2020 à 23:11, Brice Goglin via users a écrit :
Hello
The hwloc/X11 stuff is caused by OpenMPI using a hwloc that was built
with the GL backend enabled (in your case,
Hello
The hwloc/X11 stuff is caused by OpenMPI using a hwloc that was built
with the GL backend enabled (in your case, it's because package
libhwloc-plugins is installed). That backend is used for querying the
locality of X11 displays running on NVIDIA GPUs (using libxnvctrl). Does
running
Sorry, if I execute mpirun in a *really *bare terminal, without X
Server running it works! but with an error message :
Invalid MIT-MAGIC-COOKIE-1 key
So the problem is related to X, but I have still no solution
Jorge
Le 14/11/2020 à 12:33, Jorge Silva via users a écrit :
Hello,
In spite
Hello,
In spite of the delay, I was not able to solve my problem. Thanks to
Joseph and Prentice for their interesting suggestions.
I uninstalled AppAmor (SElinux is not installed ) as suggested by
Prentice but there were no changes, mpirun sttill hangs.
The result of gdb stack trace is
Hi Jorge,
Can you try to get a stack trace of mpirun using the following command
in a separate terminal?
sudo gdb -batch -ex "thread apply all bt" -p $(ps -C mpirun -o pid= |
head -n 1)
Maybe that will give some insight where mpirun is hanging.
Cheers,
Joseph
On 10/21/20 9:58 PM, Jorge
There's huge differences between Open MPI v2.1.1 and v4.0.3 (i.e., years of
development effort); it would be very hard to categorize them all; sorry!
What happens if you
mpirun -np 1 touch /tmp/foo
(Yes, you can run non-MPI apps through mpirun)
Is /tmp/foo created? (i.e., did the job
Hello Jeff,
The program is not executed, seems waits for something to connect with
(why twice ctrl-C ?)
jorge@gcp26:~/MPIRUN$ mpirun -np 1 touch /tmp/foo
^C^C
jorge@gcp26:~/MPIRUN$ ls -l /tmp/foo
ls: impossible d'accéder à '/tmp/foo': Aucun fichier ou dossier de ce type
no file is
Hi Jorge,
If a firewall is running on your nodes, I suggest you disable it and try again
Cheers,
Gilles
On Wed, Oct 21, 2020 at 5:50 AM Jorge SILVA via users
wrote:
>
> Hello,
>
> I installed kubuntu20.4.1 with openmpi 4.0.3-0ubuntu in two different
> computers in the standard way. Compiling
Hello Gus,
Thank you for your answer.. Unfortunately my problem is much more
basic. I didn't try to run the program in both computers , but just to
run something in one computer. I just installed the new OS an openmpi in
two different computers, in the standard way, with the same result.
Hi Jorge
You may have an active firewall protecting either computer or both,
and preventing mpirun to start the connection.
Your /etc/hosts file may also not have the computer IP addresses.
You may also want to try the --hostfile option.
Likewise, the --verbose option may also help diagnose the
Hello,
I installed kubuntu20.4.1 with openmpi 4.0.3-0ubuntu in two different
computers in the standard way. Compiling with mpif90 works, but mpirun
hangs with no output in both systems. Even mpirun command without
parameters hangs and only twice ctrl-C typing can end the sleeping
program.
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