Re: [OMPI users] Using strace with Open MPI on Cray

2019-04-02 Thread Christoph Niethammer
ammer/strace-analyzer [2]https://linux-nfs.vger.kernel.narkive.com/l14j0vTR/fcntl-f-setlkw-hangs-on-linux-nfs-mount Best Christoph - Mensaje original - De: "Gilles Gouaillardet" Para: "Open MPI Users" Enviados: Domingo, 31 de Marzo 2019 5:42:49 Asunto: Re: [OMPI us

Re: [OMPI users] Using strace with Open MPI on Cray

2019-03-31 Thread Christoph Niethammer
ps://linux-nfs.vger.kernel.narkive.com/l14j0vTR/fcntl-f-setlkw-hangs-on-linux-nfs-mount Best Christoph - Mensaje original - De: "Gilles Gouaillardet" Para: "Open MPI Users" Enviados: Domingo, 31 de Marzo 2019 5:42:49 Asunto: Re: [OMPI users] Using strace with Open MPI on Cray Ch

Re: [OMPI users] Using strace with Open MPI on Cray

2019-03-30 Thread Gilles Gouaillardet
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

Re: [OMPI users] Using strace with Open MPI on Cray

2019-03-30 Thread Nathan Hjelm via users
... > 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 2019 10:25:49 > Asunto: [OMPI users] Using strace with Ope

Re: [OMPI users] Using strace with Open MPI on Cray

2019-03-30 Thread Christoph Niethammer
Sábado, 30 de Marzo 2019 10:25:49 Asunto: [OMPI users] Using strace with Open MPI on Cray 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

[OMPI users] Using strace with Open MPI on Cray

2019-03-30 Thread Christoph Niethammer
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