Re: [OMPI users] OpenMPI 3.0.1 - mpirun hangs with 2 hosts

2018-05-13 Thread Max Mellette
Hi Gilles, Thanks for the suggestions; the results are below. Any ideas where to go from here? - Seems that selinux is not installed: user@b09-30:~$ sestatus The program 'sestatus' is currently not installed. You can install it by typing: sudo apt install policycoreutils - Output from o

Re: [OMPI users] Building Open MPI and default hostfile change does not go through

2018-05-13 Thread Gilles Gouaillardet
Konstantinos, You need to double check that, your OS might have done it out of the box for you already. Once logged, you can which mpirun If it resolves to /usr/local/bin/mpirun, then there is no need to update $PATH, and then ldd /usr/local/bin/mpirun If it correctly resolves to /usr/

Re: [OMPI users] Building Open MPI and default hostfile change does not go through

2018-05-13 Thread Konstantinos Konstantinidis
Thank you Gilles, One more question. Do I need to add the following lines to the .bashrc file after installing Open MPI? export PATH="$PATH:/usr/local/bin" export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib" On Sun, May 13, 2018 at 8:48 PM, Gilles Gouaillardet wrote: > Konstantinos, > >

Re: [OMPI users] peformance abnormality with openib and tcp framework

2018-05-13 Thread Nathan Hjelm
I see several problems 1) osu_latency only works with two procs. 2) You explicitly excluded shared memory support by specifying only self and openib (or tcp). If you want to just disable tcp or openib use —mca btl ^tcp or —mca btl ^openib Also, it looks like you have multiple ports active that

Re: [OMPI users] Building Open MPI and default hostfile change does not go through

2018-05-13 Thread Gilles Gouaillardet
Konstantinos, Since you ran configure --prefix=/usr/local the system-wide config file should be in /usr/local/etc/openmpi-default-hostfile Note /usr/local is the default prefix, so you do not even need the --prefix=/usr/local option Cheers, Gilles On 5/12/2018 6:58 AM, Konstantinos

[OMPI users] peformance abnormality with openib and tcp framework

2018-05-13 Thread Blade Shieh
/** The problem ***/ I have a cluster with 10GE ethernet and 100Gb infiniband. While running my application - CAMx, I found that the performance with IB is not as good as ethernet. That is confusing because IB latency and bandwith is undoubtablely better than ethernet, which is pro