Hi.
I'm testing Open MPI 4.0.0 and I'm struggling with a weird behaviour. In a very
simple example (very frustrating). I'm having the following error returned by
MPI_Send:
[gafront4:25692] *** An error occurred in MPI_Send
[gafront4:25692] *** reported by process [3152019457
If you need to support more attachments you can set the value of that variable
either by setting:
Environment:
OMPI_MCA_osc_rdma_max_attach
mpirun command line:
—mca osc_rdma_max_attach
Keep in mind that each attachment may use an underlying hardware resource that
may be easy to exhaust (h
Eduardo,
The first part of the configure command line is for an install in /usr, but
then there is ‘—prefix=/opt/openmpi/4.0.0’ and this is very fishy.
You should also use ‘—with-hwloc=external’.
How many nodes are you running on and which interconnect are you using ?
What if you
mpirun —mca pml
Good suggestion; thank you!
> On Jan 8, 2019, at 9:44 PM, Ewen Chan wrote:
>
> To Whom It May Concern:
>
> Hello. I'm new here and I got here via OpenFOAM.
>
> In the FAQ regarding running OpenMPI programs, specifically where someone
> might be able to run their OpenMPI program on a local no
Thanks. Yes, I am aware of that however, I currently have a requirement to
increase the default.
Best,
Udayanga
On Wed, Jan 9, 2019 at 9:10 AM Nathan Hjelm via users <
users@lists.open-mpi.org> wrote:
> If you need to support more attachments you can set the value of that
> variable either by se
You can set this MCA var on a site-wide basis in a file:
https://www.open-mpi.org/faq/?category=tuning#setting-mca-params
> On Jan 9, 2019, at 1:18 PM, Udayanga Wickramasinghe wrote:
>
> Thanks. Yes, I am aware of that however, I currently have a requirement to
> increase the default.
>
Jeff:
You're welcome.
Not a problem.
I was trying to email somebody more directly about this with this recommended
change only because I just encountered this problem, where a bit of time,
trying to figure out why OpenFOAM on OpenMPI, trying to get it running across
the nodes wasn't working.
Thanks, I think that will be very useful.
Best,
Udayanga
On Wed, Jan 9, 2019 at 1:39 PM Jeff Squyres (jsquyres) via users <
users@lists.open-mpi.org> wrote:
> You can set this MCA var on a site-wide basis in a file:
>
> https://www.open-mpi.org/faq/?category=tuning#setting-mca-params
>
>
>
Why is this allocated statically? I dont understand the difficulty of a
dynamically allocates and thus unrestricted implementation. Is there some
performance advantage to a bounded static allocation? Or is it that you
use O(n) lookups and need to keep n small to avoid exposing that to users?
I ha
