Re: [OMPI users] first time user - can run mpi job SMP but not over cluster

2007-02-07 Thread Alex Tumanov
Hello, mpirun -np 2 myprogram inputfile >outputfile There can be a whole host of issues with the way you run your executable and/or the way you have the environment setup. First of all, when you ssh into the node, does the environment automatically get updated with correct Open MPI paths? I.e.

[OMPI users] install script issue

2007-02-07 Thread Michael
Building openmpi-1.3a1r13525 on OS X 10.4.8 (PowerPC), using my standard compile line ./configure F77=g95 FC=g95 LDFLAGS=-lSystemStubs --with-mpi-f90- size=large --with-f90-max-array-dim=3 ; make all and after installing I found that I couldn't compile, because of the following: -rw-

[OMPI users] first time user - can run mpi job SMP but not over cluster

2007-02-07 Thread Mark Kosmowski
Dear Open-MPI list: I'm trying to run two (soon to be three) dual opteron machines as a cluster (network of workstations - they each have a disk and OS). I can ssh between machines with no password. My open-mpi code compiled fine and works great as an SMP program (using both processors on one m

[OMPI users] Does Open MPI "Realy" support AIX?

2007-02-07 Thread Nader Ahmadi
Hello All, We are in the process to decide, if we should use Open MPI in an AIX environment. Our in-house testing indicates that OMPI (V 1.1.x and V 1.2.x) stdio is broken under AIX. At this point, I am trying to find out if there is a fix or work-around for this problem. I have put another

Re: [OMPI users] large jobs hang on startup (deadlock?)

2007-02-07 Thread Ralph Castain
On 2/7/07 12:07 PM, "Heywood, Todd" wrote: > Hi Ralph, Patience is not an issue since I have a workaround (a locally > authenticated user), and other users are not running large enough MPI jobs to > hit this problem. I'm a bit confused now though. I thought that setting this > switch would s

Re: [OMPI users] large jobs hang on startup (deadlock?)

2007-02-07 Thread Heywood, Todd
Hi Ralph, Patience is not an issue since I have a workaround (a locally authenticated user), and other users are not running large enough MPI jobs to hit this problem. I'm a bit confused now though. I thought that setting this switch would set off 50 ssh sessions at a time, or 50 connections t

Re: [OMPI users] large jobs hang on startup (deadlock?)

2007-02-07 Thread Ralph Castain
Hi Todd I truly appreciate your patience. If the rate was the same with that switch set, then that would indicate to me that we aren't having trouble getting through the slapd - it probably isn't a problem with how hard we are driving it, but rather with the total number of connections being creat

Re: [OMPI users] large jobs hang on startup (deadlock?)

2007-02-07 Thread Heywood, Todd
Hi Ralph, Unfortunately, adding "-mca pls_rsh_num_concurrent 50" to mpirun (with just -np and -hostfile) has no effect. The number of established connections for slapd grows to the same number at the same rate as without it. BTW, I upgraded from 1.2b2 to 1.2b3 Thanks, TOdd -Original Mes