Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: Re: [OMPI users] mixed myrinet/non-myrinet nodes
From: Gleb Natapov (glebn_at_[hidden])
Date: 2008-01-15 09:54:57

On Tue, Jan 15, 2008 at 09:49:40AM -0500, M Jones wrote:
> Hi,
> We have a mixed environment in which roughly 2/3 of the nodes
> in our cluster have myrinet (mx 1.2.1), while the full cluster has
> gigE. Running open-mpi exclusively on myrinet nodes or exclusively
> on non-myrinet nodes is fine, but mixing the two nodes types
> results in a runtime error (PML add procs failed), no matter what --mca
> flags I try to use to push the traffic onto tcp (note that
> --mca mtl ^mx --mca btl ^mx does appear to use tcp, as long as all
> of the nodes have myrinet cards, but not in the mixed case).
What error do you get in this case? What version of Open MPI are you using?