Re: [OMPI users] Openmpi problem

2012-05-03 Thread Ralph Castain
You apparently are running on a cluster that uses Torque, yes? If so, it won't use ssh to do the launch - it uses Torque to do it, so the passwordless ssh setup is irrelevant. Did you ensure that your LD_LIBRARY_PATH includes the OMPI install lib location? On May 3, 2012, at 9:59 AM, Acero Fer

Re: [OMPI users] OpenMPI problem on Fedora Core 12

2010-03-07 Thread Gijsbert Wiesenekker
On Jan 12, 2010, at 16:57 , Eugene Loh wrote: > Jeff Squyres wrote: > >> It would be very strange for nanosleep to cause a problem for Open MPI -- it >> shouldn't interfere with any of Open MPI's mechanisms. Double check that >> your my_barrier() function is actually working properly -- remov

Re: [OMPI users] OpenMPI problem on Fedora Core 12

2010-01-12 Thread Eugene Loh
Jeff Squyres wrote: It would be very strange for nanosleep to cause a problem for Open MPI -- it shouldn't interfere with any of Open MPI's mechanisms. Double check that your my_barrier() function is actually working properly -- removing the nanosleep() shouldn't affect the correctness of yo

Re: [OMPI users] OpenMPI problem on Fedora Core 12

2010-01-12 Thread Jeff Squyres
It would be very strange for nanosleep to cause a problem for Open MPI -- it shouldn't interfere with any of Open MPI's mechanisms. Double check that your my_barrier() function is actually working properly -- removing the nanosleep() shouldn't affect the correctness of your barrier. If you'v

Re: [OMPI users] OpenMPI problem on Fedora Core 12

2009-12-31 Thread Gijsbert Wiesenekker
First of all, the reason that I have created a CPU-friendly version of MPI_Barrier is that my program is asymmetric (so some of the nodes can easily have to wait for several hours) and that it is I/O bound. My program uses MPI mainly to synchronize I/O and to share some counters between the nodes,

Re: [OMPI users] OpenMPI problem on Fedora Core 12

2009-12-14 Thread Ashley Pittman
On Sun, 2009-12-13 at 19:04 +0100, Gijsbert Wiesenekker wrote: > The following routine gives a problem after some (not reproducible) > time on Fedora Core 12. The routine is a CPU usage friendly version of > MPI_Barrier. There are some proposals for Non-blocking collectives before the MPI forum cu

Re: [OMPI users] OpenMPI problem on Fedora Core 12

2009-12-14 Thread Eugene Loh
Let's start with this: You generate non-blocking sends (MPI_Isend). Those sends are not completed anywhere. So, strictly speaking, they don't need to be executed. In practice, even if they are executed, they should be "completed" from the user program's point of view (MPI_Test, MPI_Wait, MP

Re: [OMPI users] openmpi problem

2006-11-03 Thread Durga Choudhury
Calin Your questions don't belong in this forum. You either need to be computer literate (your questions are basic OS related) or delegate this task to someone more experienced. Good luck Durga On 11/3/06, calin pal wrote: /*please read the mail and ans my query*/ sir, in f

Re: [OMPI users] openmpi problem

2006-11-03 Thread Jeff Squyres
I thought that George answered your mail already...? http://www.open-mpi.org/community/lists/users/2006/11/2102.php On Nov 3, 2006, at 5:29 AM, calin pal wrote: /*please read the mail and ans my query*/ sir, in four machine of our college i have installed in this way..tha