Re: [OMPI users] Hair depleting issue with Ompi143 and one program

2011-01-21 Thread David Mathog
Dave Goodell wrote: > Valgrind's "--track-origins=yes" option is usually helpful for figuring out where the uninitialized values came from. Good suggestion - that did eventually lead to the solution. The code always had two vector types (_m128i and _m128), and there are still two types (_m64

Re: [OMPI users] OpenMPI does not see other nodes

2011-01-21 Thread Gus Correa
Steffen Brinkmann wrote: Hi! I have installed OpenMPI on a cluster consisting of ~30 nodes with 16 Xeon cores each. NFS is set up and working. For testing I have installed locally with ./configure --prefix=/home_dir/openmpi-1.4.3_installation/; make all install everything smooth so far. Whe

Re: [OMPI users] Help with some fundamentals

2011-01-21 Thread Gus Correa
John Hearns wrote: On 20 January 2011 16:50, Olivier SANNIER wrote: I’ve started looking at beowulf clusters, and that lead me to PBS. Am I right in assuming that PBS (PBSPro or TORQUE) could be used to do the monitoring and the load balancing I thought of? Yes, that is correct. An alternati

[OMPI users] A problem with running a 32-bit program on a 64-bit machine

2011-01-21 Thread Avinash Malik
Hello, I have compiled openmpi-1.5.1 as a 32-bit binary on a 64-bit architecture. I have a problem using MPI_Comm_spawn and MPI_Comm_spawn_multiple, when MPI_Info is used as a non NULL (MPI_INFO_NULL) parameter. I get a segmentation fault. I have the exact

Re: [OMPI users] Help with some fundamentals

2011-01-21 Thread Olivier SANNIER
-Message d'origine- De : users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] De la part de John Hearns Envoyé : vendredi 21 janvier 2011 11:35 À : Open MPI Users Objet : Re: [OMPI users] Help with some fundamentals On 20 January 2011 16:50, Olivier SANNIER wrote: > > > > So th

Re: [OMPI users] Help with some fundamentals

2011-01-21 Thread Olivier SANNIER
-Message d'origine- De : users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] De la part de Nico Mittenzwey Envoyé : jeudi 20 janvier 2011 18:58 À : Open MPI Users Objet : Re: [OMPI users] Help with some fundamentals On 01/20/2011 05:50 PM, Olivier SANNIER wrote: > What is the b

Re: [OMPI users] OpenMPI does not see other nodes

2011-01-21 Thread Nico Mittenzwey
On 01/21/2011 12:26 PM, Steffen Brinkmann wrote: /home_dir/openmpi-1.4.3_installation/bin/mpirun -n 32 hostname returns 32 times the same node. What did I do wrong??? You need to tell OpenMPI on which hosts to run - for example by suppling a host file: /home_dir/openmpi-1.4.3_installation/

[OMPI users] OpenMPI does not see other nodes

2011-01-21 Thread Steffen Brinkmann
Hi! I have installed OpenMPI on a cluster consisting of ~30 nodes with 16 Xeon cores each. NFS is set up and working. For testing I have installed locally with ./configure --prefix=/home_dir/openmpi-1.4.3_installation/; make all install everything smooth so far. When I run a parallel program

Re: [OMPI users] Help with some fundamentals

2011-01-21 Thread John Hearns
On 20 January 2011 16:50, Olivier SANNIER wrote: >> I’ve started looking at beowulf clusters, and that lead me to PBS. Am I > right in assuming that PBS (PBSPro or TORQUE) could be used to do the > monitoring and the load balancing I thought of? Yes, that is correct. An alternative is Gridengine.

Re: [OMPI users] Help with some fundamentals

2011-01-21 Thread John Hearns
On 20 January 2011 16:50, Olivier SANNIER wrote: > > > > So there is no dynamic discovery of nodes available on the network. Unless, > of course, if I was to write a tool that would do it before the actual run > is started. That is in essence what a batch scheduler does. OK, to be honest it has