amis (Pasha)
> Sent: Wednesday, June 04, 2008 5:18 PM
> To: Open MPI Users
> Subject: Re: [OMPI users] OpenMPI scaling > 512 cores
>
> Scott Shaw wrote:
> > Hi, I hope this is the right forum for my questions. I am running
into
> > a problem when scaling >512 core
Scott Shaw wrote:
Hi, I hope this is the right forum for my questions. I am running into
a problem when scaling >512 cores on a infiniband cluster which has
14,336 cores. I am new to openmpi and trying to figure out the right
-mca options to pass to avoid the "mca_oob_tcp_peer_complete_connect:
One other parameter that I neglected to mention (and Scott pointed out
to me is *not* documented in the FAQ) is the mpi_preconnect_oob MCA
param.
This parameter will cause all the OOB connections to be created during
MPI_INIT, and *may* help such kind of issues. You *do* need to have
On Wed, 2008-06-04 at 11:43 -0700, Scott Shaw wrote:
> Hi, I was wondering if anyone had any comments with regarding to my
> posting of questions. Am I off base with my questions or is this the
> wrong forum for these types of questions?
>
> >
> > Hi, I hope this is the right forum for my
First and foremost: is it possible to upgrade your version of Open
MPI? The version you are using (1.2.2) is rather ancient -- many bug
fixes have occurred since then (including TCP wireup issues). Note
that oob_tcp_in|exclude were renamed to be oob_tcp_if_in|exclude in
1.2.3 to be
Hi, I hope this is the right forum for my questions. I am running into
a problem when scaling >512 cores on a infiniband cluster which has
14,336 cores. I am new to openmpi and trying to figure out the right
-mca options to pass to avoid the "mca_oob_tcp_peer_complete_connect:
connection failed:"
