Kahnbein Kai via users wrote:
[External Email]
Hey Tony,
it works without the -parallel flag, all four cpu's are at 100% and
running fine.
Best regards
Kai
Am 05.01.21 um 20:36 schrieb Tony Ladd via users:
Just run the executable without mpirun and the -parallel flag.
On 1/2/21 11:39 PM,
Just run the executable without mpirun and the -parallel flag.
On 1/2/21 11:39 PM, Kahnbein Kai via users wrote:
*[External Email]*
Ok, sorry, what do you mean with the "serial version" ?
Best regards
Kai
Am 31.12.20 um 16:25 schrieb tladd via users:
I did not see the whole email chain befo
Jeff
I found the solution - rdma needs significant memory so the limits on
the shell have to be increased. I needed to add the lines
* soft memlock unlimited
* hard memlock unlimited
to the end of the file /etc/security/limits.conf. After that the openib
driver loads and everything is fine -
f [older] hardware
(including UCX support on that hardware). But be aware that openib is
definitely going away; it is wholly being replaced by UCX. It may be that your
only option is to stick with older software stacks in these hardware
environments.
On Aug 23, 2020, at 9:46 PM, Tony Ladd vi
nfo on one node
ibdiagnet on one node
On Sun, 23 Aug 2020 at 05:02, Tony Ladd via users
mailto:users@lists.open-mpi.org>> wrote:
Hi Jeff
I installed ucx as you suggested. But I can't get even the
simplest code
(ucp_client_server) to work across the network. I can comp
Jeff Squyres (jsquyres) wrote:
[External Email]
Tony --
Have you tried compiling Open MPI with UCX support? This is Mellanox
(NVIDIA's) preferred mechanism for InfiniBand support these days -- the openib
BTL is legacy.
You can run: mpirun --mca pml ucx ...
On Aug 19, 2020, at 12:46 PM,
One other update. I compiled OpenMPI-4.0.4 The outcome was the same but
there is no mention of ibv_obj this time.
Tony
--
Tony Ladd
Chemical Engineering Department
University of Florida
Gainesville, Florida 32611-6005
USA
Email: tladd-"(AT)"-che.ufl.edu
Webhttp://ladd.che.ufl.edu
Tel:
My apologies - I did not read the FAQ's carefully enough - with regard
to 14:
1. openib
2. Ubuntu supplied drivers etc.
3. Ubuntu 18.04 4.15.0-112-generic
4. opensm-3.3.5_mlnx-0.1.g6b18e73
5. Attached
6. Attached
7. unlimited on foam and 16384 on f34
I changed the ulimit to unlimited on
I would very much appreciate some advice in how to debug this problem. I
am trying to get OpenMPI to work on my reconfigured cluster - upgrading
from Centos 5 to Ubuntu 18. The problem is that a simple job using
Intel's IMB message passing test code will not run on any of the new
clients (4 so
