Re: [OMPI users] Test Program works on 1, 2 or 3 nodes. Hangs on 4 or more nodes.

2010-09-21 Thread Ethan Deneault
Prentice Bisbal wrote: Ashley Pittman wrote: This smacks of a firewall issue, I thought you'd said you weren't using one but now I read back your emails I can't see anywhere where you say that. Are you running a flrewall or any iptables rules on any of the nodes? It looks to me like you may

Re: [OMPI users] Test Program works on 1, 2 or 3 nodes. Hangs on 4 or more nodes.

2010-09-21 Thread Prentice Bisbal
Ashley Pittman wrote: > This smacks of a firewall issue, I thought you'd said you weren't using one > but now I read back your emails I can't see anywhere where you say that. Are > you running a flrewall or any iptables rules on any of the nodes? It looks > to me like you may have some setup f

Re: [OMPI users] Test Program works on 1, 2 or 3 nodes. Hangs on 4 or more nodes.

2010-09-21 Thread Ashley Pittman
This smacks of a firewall issue, I thought you'd said you weren't using one but now I read back your emails I can't see anywhere where you say that. Are you running a flrewall or any iptables rules on any of the nodes? It looks to me like you may have some setup from on the worker nodes. Ash

Re: [OMPI users] Test Program works on 1, 2 or 3 nodes. Hangs on 4 or more nodes.

2010-09-21 Thread Ethan Deneault
Rolf vandeVaart wrote: Ethan: Can you run just "hostname" successfully? In other words, a non-MPI program. If that does not work, then we know the problem is in the runtime. If it does works, then there is something with the way the MPI library is setting up its connections. Interesting.

Re: [OMPI users] Test Program works on 1, 2 or 3 nodes. Hangs on 4 or more nodes.

2010-09-21 Thread Rolf vandeVaart
Ethan: Can you run just "hostname" successfully? In other words, a non-MPI program. If that does not work, then we know the problem is in the runtime. If it does works, then there is something with the way the MPI library is setting up its connections. Is there more than one interface on

Re: [OMPI users] Test Program works on 1, 2 or 3 nodes. Hangs on 4 or more nodes.

2010-09-21 Thread Ethan Deneault
Prentice Bisbal wrote: I'm assuming you already tested ssh connectivity and verified everything is working as it should. (You did test all that, right?) Yes. I am able to log in remotely to all nodes from the master, and to each node from each node without a password. Each node mounts the sa

Re: [OMPI users] Test Program works on 1, 2 or 3 nodes. Hangs on 4 or more nodes.

2010-09-21 Thread Gus Correa
Prentice Bisbal wrote: Ethan Deneault wrote: All, I am running Scientific Linux 5.5, with OpenMPI 1.4 installed into the /usr/lib/openmpi/1.4-gcc/ directory. I know this is typically /opt/openmpi, but Red Hat does things differently. I have my PATH and LD_LIBRARY_PATH set correctly; because th

Re: [OMPI users] Test Program works on 1, 2 or 3 nodes. Hangs on 4 or more nodes.

2010-09-21 Thread Prentice Bisbal
Ethan Deneault wrote: > All, > > I am running Scientific Linux 5.5, with OpenMPI 1.4 installed into the > /usr/lib/openmpi/1.4-gcc/ directory. I know this is typically > /opt/openmpi, but Red Hat does things differently. I have my PATH and > LD_LIBRARY_PATH set correctly; because the test program

Re: [OMPI users] Test Program works on 1, 2 or 3 nodes. Hangs on 4 or more nodes.

2010-09-20 Thread ETHAN DENEAULT
Professor of Physics SC 234 University of Tampa Tampa, FL 33606 -Original Message- From: users-boun...@open-mpi.org on behalf of David Zhang Sent: Mon 9/20/2010 9:58 PM To: Open MPI Users Subject: Re: [OMPI users] Test Program works on 1, 2 or 3 nodes. Hangs on 4 or more nodes. I don

Re: [OMPI users] Test Program works on 1, 2 or 3 nodes. Hangs on 4 or more nodes.

2010-09-20 Thread David Zhang
I don't know if this will help, but try mpirun --machinefile testfile -np 4 ./test.out for running 4 processes On Mon, Sep 20, 2010 at 3:00 PM, Ethan Deneault wrote: > All, > > I am running Scientific Linux 5.5, with OpenMPI 1.4 installed into the > /usr/lib/openmpi/1.4-gcc/ directory. I know th