Re: [OMPI users] Performance tuning: focus on latency

On Jul 23, 2007, at 6:43 AM, Biagio Cosenza wrote: I'm working on a parallel real time renderer: an embarassing parallel problem where latency is the threshold to high perfomance. Two observations: 1) I did a simple "ping-pong" test (the master does a Bcast + an IRecv for each node + a

Re: [OMPI users] sge qdel fails

Hi, running conventional TCP/IP all is safe AFAICS - all processes will be killed on all involved nodes. The problem arises with OFED, with which we also have this behavior using MVAPICH. Unfortunately we have only a limited number of nodes with InfiniBand, and hence time to test and

Re: [OMPI users] Building OMPI with dated tools & libs

It *should* work. We stopped developing for the Cisco (mVAPI) stack a while ago, but as far as we know, it still works fine. See: http://www.open-mpi.org/faq/?category=openfabrics#vapi-support That being said, your approach of "it ain't broke, don't fix it" is certainly quite

[OMPI users] MPI_HOME

openmpi-1.2.3 compiled on Debian Linux amd64 etch with ./configure CC=/opt/intel/cce/9.1.042/bin/icc CXX=/opt/intel/cce/9.1.042/bin/icpc F77=/opt/intel/fce/9.1.036/bin/ifort FC=/opt/intel/fce/9.1.036/bin/ifort --with-libnuma=/usr/lib ompi_info |grep libnuma ompi_info |grep maffinity reported

Re: [OMPI users] sge qdel fails

Hi Henk, SLIM H.A. wrote: Dear Pak Lui I can delete the (sge) job with qdel -f such that it disappears from the job list but the application processes keep running, including the shepherds. I have to kill them with -15 For some reason the kill -15 does not reach mpirun. (We use such a

Re: [OMPI users] sge qdel fails

Dear Pak Lui I can delete the (sge) job with qdel -f such that it disappears from the job list but the application processes keep running, including the shepherds. I have to kill them with -15 For some reason the kill -15 does not reach mpirun. (We use such a parameter to mpirun on our myrinet

Re: [OMPI users] MPI_File_set_view rejecting subarray views.

Thanks, Brian. That did the trick. -Ken > -Original Message- > From: users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] On > Behalf Of Brian Barrett > Sent: Thursday, July 19, 2007 3:39 PM > To: Open MPI Users > Subject: Re: [OMPI users] MPI_File_set_view rejecting subarray

Re: [OMPI users] orterun --bynode/--byslot problem

Yes...it would indeed. On 7/23/07 9:03 AM, "Kelley, Sean" wrote: > Would this logic be in the bproc pls component? > Sean > > > From: users-boun...@open-mpi.org on behalf of Ralph H Castain > Sent: Mon 7/23/2007 9:18 AM > To: Open MPI Users >

Re: [OMPI users] orterun --bynode/--byslot problem

Would this logic be in the bproc pls component? Sean From: users-boun...@open-mpi.org on behalf of Ralph H Castain Sent: Mon 7/23/2007 9:18 AM To: Open MPI Users Subject: Re: [OMPI users] orterun --bynode/--byslot problem No, byslot

[OMPI users] Building OMPI with dated tools & libs

Good morning all, I have been very impressed so far with OpenMPI on one of our smaller clusters running Gnu compilers and Gig-E interconnects, so I am considering a build on our large cluster. The potential problem is that the compilers are Intel 8.1 versions and the Infiniband is supported

Re: [OMPI users] sge qdel fails

Hi Henk, The sge script should not require any extra parameter. The qdel command should send the kill signal to mpirun and also remove the SGE allocated tmp directory (in something like /tmp/174.1.all.q/) which contains the OMPI session dir for the running job, and in turns would cause orted

Re: [OMPI users] mpi with icc, icpc and ifort :: segfault (Jeff Squyres)

> > From: Jeff Squyres > > > > Can you be a bit more specific than "it dies"? Are you talking about > > mpif90/mpif77, or your app? > > Sorry, tuspid me. When executing mpif90 or mpif77 I have a segfault and it > doesn't compile. I've tried both with or without input (i.e.,

Re: [OMPI users] orterun --bynode/--byslot problem

No, byslot appears to be working just fine on our bproc clusters (it is the default mode). As you probably know, bproc is a little strange in how we launch - we have to launch the procs in "waves" that correspond to the number of procs on a node. In other words, the first "wave" launches a proc

[OMPI users] Problems starting mpi program via a system call from within a mpi program

Hi I am in the process of moving a parallel program from our old 32 bit based (Xeon @ 2.8 GHz) Linux cluster to a new EM64T (Intel Xeon 5160 @ 3.00GHz) base linux cluster. OS on the old cluster is Redhat 9 and Fedora 7 on the new cluster. I have installed the Intel Fortran compiler

[OMPI users] Performance tuning: focus on latency

Hello, I'm working on a parallel real time renderer: an embarassing parallel problem where latency is the threshold to high perfomance. Two observations: 1) I did a simple "ping-pong" test (the master does a Bcast + an IRecv for each node + a Waitall) similar to effective renderer workload.

[OMPI users] EuroPVM/MPI'07 -- Call for Participation

Call for Participation: EuroPVM/MPI'07 http://www.pvmmpi07.org Please join us for the 14th European PVM/MPI Users' Group conference, which will be held in Paris, France from September 30 to October 3. This conference is a forum for the discussion and presentation of recent

[OMPI users] sge qdel fails

I am using OpenMPI 1.2.3 with SGE 6.0u7 over InfiniBand (OFED 1.2), following the recommendation in the OpenMPI FAQ http://www.open-mpi.org/faq/?category=running#run-n1ge-or-sge The job runs but when the user wants to delete the job with the qdel command, this fails. Does the mpirun command