Re: [OMPI users] OpenMPI 3 without network connection

2019-01-29 Thread Patrick Bégou
Thanks Gilles for this work around. And thanks to OpenMPI developpers for this responsiveness to quickly correct the problem too. I'll build and deploy this new version for the users as soon as I'm back to the laboratory. Patrick Le 29/01/2019 à 06:48, Gilles Gouaillardet a écrit : > Patrick, >

Re: [OMPI users] OpenMPI 3 without network connection

2019-01-28 Thread Gilles Gouaillardet
Patrick, I double checked the code, and indeed, mpirun should have automatically felt back on the loopback interface (and mpirun should have worked) The virbr0 interface prevented that and this is a bug I fixed in https://github.com/open-mpi/ompi/pull/6315 Future releases of Open MPI

Re: [OMPI users] OpenMPI 3 without network connection

2019-01-28 Thread Gilles Gouaillardet
Patrick, The root cause is we do not include the localhost interface by default for OOB communications. You should be able to run with mpirun --mca oob_tcp_if_include lo -np 4 hostname Cheers, Gilles On 1/28/2019 11:02 PM, Patrick Bégou wrote: Hi, I fall in a strange problem with

Re: [OMPI users] OpenMPI 3 without network connection

2019-01-28 Thread Patrick Bégou
Hi Gilles, localhost is available in the state where the problem occurs. I discover suddently this mpi trouble yesterday as I was working in the train... otherwise I was always connected to the net at home (wifi) or at the laboratory (wired) bash-4.2$ ifconfig enp0s31f6: flags=4099  mtu 1500

Re: [OMPI users] OpenMPI 3 without network connection

2019-01-28 Thread Gilles Gouaillardet
Patrick, Does “no network is available” means the lo interface (localhost 127.0.0.1) is not even available ? Cheers, Gilles On Monday, January 28, 2019, Patrick Bégou < patrick.be...@legi.grenoble-inp.fr> wrote: > Hi, > > I fall in a strange problem with OpenMPI 3.1 installed on a CentOS7 >