Re: [OMPI users] MPI_Bcast issue

Jeff thanks for the clarification, What I am trying to do is run N concurrent copies of a 1 to N data movement program to affect an N to N solution.  The actual mechanism I am using is to spawn N copies of mpirun from PVM across the cluster. So each 1 to N MPI application starts at the same

Re: [OMPI users] MPI_Allreduce on local machine

Hi Jeff Thank you for opening a ticket and taking care of this. Jeff Squyres wrote: On Jul 28, 2010, at 5:07 PM, Gus Correa wrote: Still, the alignment under Intel may or may not be right. And this may or may not explain the errors that Hugo has got. FYI, the ompi_info from my OpenMPI 1.3.2

Re: [OMPI users] openMPI shared with NFS, but says different version

Thank you, Cristobal. That is good news. Gus Correa Cristobal Navarro wrote: i have good news. after updating to a newer kernel on ubuntu server nodes, sm is not a problem anymore for the nehalem CPUs!!! my older kernel, was Linux 2.6.32-22-server #36-Ubuntu SMP Thu Jun 3 20:38:33 UTC 2010

Re: [OMPI users] Hybrid OpenMPI / OpenMP run pins OpenMP threads to a single core

Solved: The process to core locking was due to affinity being set at the PSM layer. So I added -x IPATH_NO_CPUAFFINITY=1 to the mpirun command. Dave On Wed, Aug 4, 2010 at 12:13 PM, Eugene Loh wrote: > > David Akin wrote: > >> All, >> I'm trying to get the OpenMP portion

Re: [OMPI users] MPI_Bcast issue

+1 on Eugene's comment that I don't fully understand what you are trying to do. Can you send a short example code? Some random points: - Edgar already chimed in about how MPI-2 allows the use of intercommunicators with bcast. Open MPI is MPI-2.1 complaint, so you can use intercommunicators

Re: [OMPI users] MPI Template Datatype?

On Tue, Aug 10, 2010 at 9:49 PM, Alexandru Blidaru wrote: > Are the Boost.MPI send and recv functions as fast as the standard ones when > using Open-MPI? Boost.MPI is layered on top of plain MPI; it basically provides a mapping from complex and user-defined C++ data types to

Re: [OMPI users] MPI Template Datatype?

Hi Riccardo, Are the Boost.MPI send and recv functions as fast as the standard ones when using Open-MPI? Best regards, Alexandru Blidaru University of Waterloo - Electrical Engineering '15 University email: asbli...@uwaterloo.ca Twitter handle: @G_raph Blog: http://alexblidaru.wordpress.com/

Re: [OMPI users] [openib] segfault when using openib btl

Hi, sorry, i just forgot to add the values of the function parameters: (gdb) print reg->cbdata $1 = (void *) 0x0 (gdb) print openib_btl->super $2 = {btl_component = 0x2b341edd7380, btl_eager_limit = 12288, btl_rndv_eager_limit = 12288, btl_max_send_size = 65536, btl_rdma_pipeline_send_length =

Re: [OMPI users] [openib] segfault when using openib btl

Hi, Here is the output of a core file generated during a segmentation fault observed during a collective call (using openib): #0 0x in ?? () (gdb) where #0 0x in ?? () #1 0x2aedbc4e05f4 in btl_openib_handle_incoming (openib_btl=0x1902f9b0, ep=0x1908a1c0,

Re: [OMPI users] openib issues

Hi Mike, The HCA card is a Mellanox Technologies MT25418 (ConnectX IB DDR, PCIe 2.0 2.5GT/s, rev a0). I cannot post code/instructions how to reproduce these errors as they randomly appeared during some tests I've performed to locate the origin of a segmentation fault during an MPI collective

Re: [OMPI users] openib issues

Hey Eloi, What HCA card do you have ? Can you post code/instructions howto reproduce it? 10x Mike On Mon, Aug 9, 2010 at 5:22 PM, Eloi Gaudry wrote: > Hi, > > Could someone have a look on these two different error messages ? I'd like > to know the reason(s) why they were displayed

[OMPI users] SGE integration when getting slots from different queues on one and the same host mismatch

Hi, I just stumped into the following behavior of Open MPI 1.4.2. Used jobscript: *** #!/bin/sh export PATH=~/local/openmpi-1.4.2/bin:$PATH cat $PE_HOSTFILE mpiexec ./dummy.sh *** with dummy.sh: *** #!/bin/sh env | grep TMPDIR sleep 30 *** === Situation 1: getting 4 slots in total from 2