What versions of OpenMPI and the Mellanox MXM libraries have been tested and
verified to work?
We are currently trying to build OpenMPI v1.5.5 against the MXM 1.0.601
(included in the MLNX_OFED_LINUX-1.5.3-3.0.0 distribution) and are getting
build errors.
Specifically, there's a single undefin
I wrote a chapter about Open MPI in "The Architecture of Open Source
Applications, volume 2", which was just made available in dead tree form
today:
http://blogs.cisco.com/performance/the-architecture-of-open-source-applicat
ions-volume-ii/
All royalties from this book go to Amnesty Internationa
Yep you are correct. I did the same and it worked. When I have more than 3
MPI tasks there is lot of overhead on GPU.
But for CPU there is not overhead. All three machines have 4 quad core
processors with 3.8 GB RAM.
Just wondering why there is no degradation of performance on CPU ?
On Tue, May
You should be running with one GPU per MPI process. If I understand correctly,
you have a 3 node cluster and each node has a GPU so you should run with np=3.
Maybe you can try that and see if your numbers come out better.
From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] On B
On May 8, 2012, at 7:39 AM, ahmed lasheen wrote:
> I am using pgi10.0.0 and it works with nonMPI application well.
I think if you try complex non-MPI applications, you may run into issues. I
say this based on seeing lines like this in your logs:
-
PGC-W-0221-Redefinition of symbol CPU_SET
I am using pgi10.0.0 and it works with nonMPI application well.
I will upgrade pgi and I will tell you the result.
thanks
On Tue, May 8, 2012 at 1:15 PM, Jeff Squyres wrote:
> Looks like your PGI compiler installation may be busted.
>
> Can you compile non-MPI applications with it?
>
> It looks
Looks like your PGI compiler installation may be busted.
Can you compile non-MPI applications with it?
It looks like you have PGI 10.x. Try upgrading to the latest version of the
PGI 10.x series (i.e., get all the relevant PGI compiler bug fixes).
On May 8, 2012, at 6:43 AM, ahmed lasheen w
Thanks
I put cc and cxx ,But I also get the following errors
PGC/x86-64 Linux 10.0-0: compilation completed with severe errors
make[3]: *** [keyval_lex.lo] Error 1
I have attached the configure and make output.
thanks in advance.
On Tue, May 8, 2012 at 2:54 AM, Jeff Squyres (jsquyres)
wrote:
> O
On 5/7/2012 8:40 PM, Jeff Squyres (jsquyres) wrote:
On May 7, 2012, at 8:31 PM, Jingcha Joba wrote:
So in the above stated example, end-start will be: +
20ms ?
(time slice of P2 + P3 = 20ms)
More or less (there's nonzero amount of time required for the kernel scheduler,
and the time quantu
