Re: [OMPI users] 1.8.4 behaves completely different from 1.6.5

You might want to check out these blog entries about the tree-based launcher in Open MPI for a little background: http://blogs.cisco.com/performance/tree-based-launch-in-open-mpi http://blogs.cisco.com/performance/tree-based-launch-in-open-mpi-part-2 Your mail describes several issues;

[OMPI users] 1.8.4 behaves completely different from 1.6.5

I have a nasty bug in my software and can make it crash by stopping it with ctrl-Z, waiting many seconds, and then saying "fg", for continuing the run. At least it crashes when I start it on 3 workers with 24 instances each plus a master. On 2 workers with 24 instances each it doesn't crash. I

Re: [OMPI users] MPI_THREAD_MULTIPLE and openib btl

Hi, mxm uses IB rdma/roce technologies. Once can select UD/RC/DC transports to be used in mxm. By selecting mxm, all MPI p2p routines will be mapped to appropriate mxm functions. M On Mon, Mar 30, 2015 at 7:32 PM, Subhra Mazumdar wrote: > Hi MIke, > > Does the mxm

Re: [OMPI users] Connection problem on Linux cluster

Sure Ralph, I 'll prepare it and will send it to you in few days. Regards, Karos From: users [users-boun...@open-mpi.org] on behalf of Ralph Castain [r...@open-mpi.org] Sent: 31 March 2015 13:36 To: Open MPI Users Subject: Re: [OMPI users] Connection problem on

Re: [OMPI users] Connection problem on Linux cluster

I'm glad to hear this was resolved! Could you please do us a favor? There may be others out there that would like to try running OMPI on OpenStack. It would be really helpful if we could capture your steps for making it all work and put those in our FAQ area of our web site. Would you mind