Christoph,
I do not know how to fix this, but here are some suggestions/thoughts
- do you need the -f flag ? if not, just remote it
- what if you mpirun strace -o /dev/null ... ?
- if the former works, then you might want to redirect the strace
output to a local file (mpirun wrapper.sh, in which
Add --mca btl ^tcp to your mpirun command line. It shouldn't be used on a Cray.
> On Mar 30, 2019, at 2:00 PM, Christoph Niethammer wrote:
>
> Short update:
>
> The polled file descriptor is related to a socket, which I identified to be
> the local tcp btl connection ...
> On a Lustre file sys
Short update:
The polled file descriptor is related to a socket, which I identified to be the
local tcp btl connection ...
On a Lustre file system the problem does not show up.
Best
Christoph
- Mensaje original -
De: "niethammer"
Para: "Open MPI Users"
Enviados: Sábado, 30 de Marzo 20
Hello,
I was trying to investigate some processes with strace under Open MPI.
However I have some issues when MPI I/O functionality is included writing data
to a NFS file system.
mpirun -np 2 strace -f ./hello-world mpi-io
does not return and strace is stuck reporting infinite "poll" calls.
How
