lam vs. openmpi

On 24 May 2009 at 23:02, Erin Hodgess wrote:
| Dear R Debian Users:
|
| I wrote a quick C program (eventually to become R code) and compiled it as:
|
| mpicc -o greet greet.c
|
| So far so good. ?Now when I run mpirun, this happens:
|
|
| erin at erin-laptop:~$ mpirun -np 2 greet
| -----------------------------------------------------------------------------
| It seems that there is no lamd running on the host erin-laptop.
|
| This indicates that the LAM/MPI runtime environment is not operating.
| The LAM/MPI runtime environment is necessary for the "mpirun" command.
|
| Please run the "lamboot" command the start the LAM/MPI runtime
| environment. ?See the LAM/MPI documentation for how to invoke
| "lamboot" across multiple machines.
| -----------------------------------------------------------------------------
|
|
| I have both lam and openmpi installed on my Ubuntu 9.04. ?What should
| I do to eliminate the lam issue, please?

Either by uninstalling the lam packages, and/or by calling the Open MPI
programs directly (which overrides the default values of the alternatives
system). ?I.e.

? ? ? ? ?mpicc.openmpi ? ? ? ? ? ? ? ? instead of mpicc

? ? ? ? ?mpirun.openmpi ? ? ? ? ? ? ? ?instead of mpirun, or just use orterun

But unless you have a reason to use it, I'd just un-install all things lam.

Dirk



| thanks,
| Erin
|
|
| --
| Erin Hodgess
| Associate Professor
| Department of Computer and Mathematical Sciences
| University of Houston - Downtown
| mailto: erinm.hodgess at gmail.com
|
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