Hi Daofeng
Do you have an Infiniband card in the machine where you are
running the program?
(Open Fabrics / OFED is the software support for Infiniband.
I guess you need the same version installed in all machines.)
Does the directory referred in the error message actually
exist in your machine (
Dear Jeff,
actually i didnot understand thiscan you or anyone tell me what to do?
Thx.
Best.
On Fri, Dec 3, 2010 at 9:41 PM, Jeff Squyres (jsquyres)
wrote:
> It means that you probably have a version mismatch with your OpenFabrics
> drivers and or you have no OpenFabrics hardware and you
On 2010-12-03, at 8:46AM, Jeff Squyres (jsquyres) wrote:
> Another option to try is to install the openmx drivers on your system and run
> open MPI with mx support. This should be much better perf than tcp.
We've tried this on a big GigE cluster (in fact, Brice Goglin was playing with
it on o
Yes, we have never really optimized open MPI for tcp. That is changing soon,
hopefully.
Regardless, what is the communication pattern of your app? Are you sending a
lot of data frequently? Even the MPICH perf difference is surprising - it
suggests a lot of data xfer, potentially with small m
It means that you probably have a version mismatch with your OpenFabrics
drivers and or you have no OpenFabrics hardware and you should probably disable
those drivers.
Sent from my PDA. No type good.
On Dec 3, 2010, at 4:56 AM, "Daofeng Li" wrote:
> Dear list,
>
> i am currently try to u
Collecting MPI Profile information might help narrow down the issue. You
could use some of the tools mentioned here -
http://www.open-mpi.org/faq/?category=perftools
--Nysal
On Wed, Dec 1, 2010 at 11:59 PM, Price, Brian M (N-KCI) <
brian.m.pr...@lmco.com> wrote:
> OpenMPI version: 1.4.3
>
> Pla
On Friday 19 November 2010 01:03:35 HeeJin Kim wrote:
...
> * mlx4: There is a mismatch between the kernel and the userspace
> libraries: Kernel does not support XRC. Exiting.*
...
> What I'm thinking is that the infiniband card is installed but it doesn't
> work in correct mode.
> My linux kerne
Dear list,
i am currently try to use the OpenMPI package
i install it at my home directory
./configure --prefix=$HOME --enable-mpi-threads
make
make install
and the i add the ~/bin to the path and ~/lib to the ld_library_path to my
.bashrc file
everything seems normal as i can run the example pr
Dear OpenMPI users
I am dealing with an arithmetic problem. In fact, I have two variants of
my code: one in single precision, one in double precision. When I
compare the two executable built with MPICH, one can observed an
expected difference of performance: 115.7-sec in single precision
aga
