Re: [OMPI users] Broadcast and root process

2013-04-29 Thread George Bosilca
No, the root processor can be different for every broadcast, but for a same broadcast every process involved must know who the root is. That's the only condition MPI imposes. George. On Apr 29, 2013, at 13:15 , giggzounet wrote: > Hi, > > I'm new on this list. I'm using MPI for years but I

Re: [OMPI users] getting opal_init:startup:internal-failure

2013-04-29 Thread E.O.
Thank you! I agree that using NFS to share the home directory now.. I wanted to use --preload-binary option. eiichi On Mon, Apr 29, 2013 at 10:15 AM, Jeff Squyres (jsquyres) < jsquy...@cisco.com> wrote: > FWIW, to avoid using the --prefix option, you can set your PATH / > LD_LIBRARY_PATH to poin

Re: [OMPI users] getting opal_init:startup:internal-failure

2013-04-29 Thread Jeff Squyres (jsquyres)
FWIW, to avoid using the --prefix option, you can set your PATH / LD_LIBRARY_PATH to point to the Open MPI installation on all nodes. Many organizations opt to have NFS-shared home directories, so that when you modify your "main" shell startup file (e.g., .bashrc) to point PATH and LD_LIBRARY_P

Re: [OMPI users] LD_LIBRARY_PATH Problem

2013-04-29 Thread Ralph Castain
Well, it looks like you included a node called "ibc18" in your hostfile, and ssh doesn't recognize that node or know how to reach it. On Apr 29, 2013, at 6:12 AM, "sudhirs@" wrote: > Dear users, > I am getting following error while doing a calculation. The job is getting > terminated before wr

[OMPI users] LD_LIBRARY_PATH Problem

2013-04-29 Thread sudhirs@
Dear users, I am getting following error while doing a calculation. The job is getting terminated before writing anything in output file . == ssh: ibc18: Name or service not known^M -

Re: [OMPI users] getting opal_init:startup:internal-failure

2013-04-29 Thread E.O.
It works!!! By putting two dash'es and no equal sign, it worked fine!! [root@host1 tmp]# mpirun --prefix /myname --host host2 /tmp/hello.out Hello World from processor host2, rank 0 out of 1 processors [root@host1 tmp]# It looks like one dash "-prefix" also works if I don't put an equal sign.. T

Re: [OMPI users] getting opal_init:startup:internal-failure

2013-04-29 Thread Ralph Castain
Hmmokay. No, let's not bother to install a bunch of stuff you don't otherwise need. I probably mis-typed the "prefix" option - it has two dashes in front of it and no equal sign: mpirun --prefix ./myname ... I suspect you only put one dash, and the equal sign was a definite problem, which

Re: [OMPI users] getting opal_init:startup:internal-failure

2013-04-29 Thread E.O.
I tried configuring/building an OMPI on the remote host but I was not able to... The remote host (host2) doesn't have any development tools, such as gcc, make, etc... Since I am able to run an MPI hello_c binary on the remote host, I believe the host has all the necessary libraries needed for MPI.

[OMPI users] Broadcast and root process

2013-04-29 Thread giggzounet
Hi, I'm new on this list. I'm using MPI for years but I don't have written a lot of code with MPI. Therefore is my question perhaps ridiculous: I'm using a Computational Fluid Mechanics (CFD) Solver. This Solver uses MPI to exchange the data between the different partitions. In this solver the "r