Re: [OMPI users] Running Open MPI on Ethernet

2008-08-08 Thread Ralph Castain
You might want to peruse the Open MPI FAQ area: http://www.open-mpi.org/faq/ Particularly: http://www.open-mpi.org/faq/?category=running and http://www.open-mpi.org/faq/?category=rsh On Aug 8, 2008, at 10:50 AM, Rayne wrote: If you have other machines on the network, you have to configure

Re: [OMPI users] Running Open MPI on Ethernet

2008-08-08 Thread Rayne
> If you have other machines on the network, you have to > configure them > such that you can start remote processes on them. > When you use "mpirun" to launch your MPI code you > need to give the names > of those machines as a parameter to mpirun - it is known as > a "machines > file". > > John He

Re: [OMPI users] Running Open MPI on Ethernet

2008-08-08 Thread Gus Correa
Hello Rayne Lancer and list Rayne, if you tell the command you use to launch the job, you may get a faster answer from the list. I agree with others who guessed that your program may running on your local machine only, i.e. wherever you launch the job (through mpirun or similar). It can run

Re: [OMPI users] Running Open MPI on Ethernet

2008-08-08 Thread John Hearns
On Fri, 2008-08-08 at 20:11 +0800, Rayne wrote: > Hi all, > I'm running openmpi-1.2.6, and my computer is connected to a Ethernet > network. I have no experience in setting up a network that supports parallel > computing using MPI before, nor do I know much about networking. So please > excuse m

Re: [OMPI users] Running Open MPI on Ethernet

2008-08-08 Thread Ralph Castain
Best guess, without seeing the mpirun cmd line, is that all the procs are executing on one computer. In that scenario, we default to using shared memory, so there would be no traffic going across the network. On Aug 8, 2008, at 6:11 AM, Rayne wrote: Hi all, I'm running openmpi-1.2.6, and m