Re: [OMPI users] OpenMPI w valgrind: need to recompile?

2010-01-11 Thread Rainer Keller
Hello Saurabh, On Wednesday 06 January 2010 11:20:55 am Saurabh T wrote: > I am building libraries against OpenMPI, and then applications using those > libraries. > > It was unclear from the FAQ at > http://www.open-mpi.org/faq/?category=debugging#memchecker_how whether the > libraries need to be r

Re: [OMPI users] checkpointing multi node and multi process applications

2010-01-11 Thread Josh Hursey
On Dec 19, 2009, at 7:42 AM, Jean Potsam wrote: Hi Everyone, I am trying to checkpoint an mpi application running on multiple nodes. However, I get some error messages when i trigger the checkpointing process. Error: expected_component: PID information unavailable!

Re: [OMPI users] checkpoint opempi-1.3.3+sge62

2010-01-11 Thread Josh Hursey
On Dec 14, 2009, at 12:25 PM, Sergio Díaz wrote: Hi Reuti, Yes, I sent a job with SGE and I checkpointed the mpirun process, by hand, entering into the mpi master node. Then I killed the job with qdel and after that I did the ompi-restart. I will try to integrate with SGE creating a ckpt e

Re: [OMPI users] problem restarting multiprocess mpi application

2010-01-11 Thread Josh Hursey
On Dec 13, 2009, at 3:57 PM, Kritiraj Sajadah wrote: Dear All, I am running a simple mpi application which looks as follows: ## #include #include #include #include #include int main(int argc, char **argv) { int rank,size; MPI_Init(&argc

Re: [OMPI users] Problem with checkpointing multihosts, multiprocesses MPI application

2010-01-11 Thread Josh Hursey
On Dec 12, 2009, at 10:03 AM, Kritiraj Sajadah wrote: Dear All, I am trying to checkpoint am MPI application which has two processes each running on two seperate hosts. I run the application as follows: raj@sun32:~$ mpirun -am ft-enable-cr -np 2 --hostfile sunhost -mca btl ^openi

[OMPI users] OpenMPI less fast than MPICH

2010-01-11 Thread Mathieu Gontier
Hi all I want to migrate my CFD application from MPICH-1.2.4 (ch_p4 device) to OpenMPI-1.4. Hence, I compared the two libraries compiled with my application and I noted OpenMPI is less efficient thant MPICH on ethernet (170min with MPICH against 200min with OpenMPI). So, I wonder if someone h

Re: [OMPI users] MPI debugger

2010-01-11 Thread Jed Brown
On Sun, 10 Jan 2010 19:29:18 +, Ashley Pittman wrote: > It'll show you parallel stack traces but won't let you single step for > example. Two lightweight options if you want stepping, breakpoints, watchpoints, etc. * Use serial debuggers on some interesting processes, for example with m