>
>Hello,
>
>We worked with PVM for many years and recently did some experimenting with
>MPI. On Linux clusters we worked with LAM and on an SGI Origin system with
>SGI's MPI.
>
>One notable difference between these MPI-implementations is the -prefix
>option of mpirun on SGI. It allows you to add some extra text to the output
>of each process before it is printed to the screen. E.g. -prefix ' %g # '
>will put the rank of a process and a hash in front of each line. This
>greatly helps in printf-style debugging, we built something similar in our
>PVM master process ourselves (using catching of I/O of the spawned
>subprocesses).
>
>Does LAM-MPI offer a similar function, or can we construct it ourselves ?
>
The feature you mentioned is one of the features to be added to LAM, but
not in the immediate future.
>Would there be a general interest in this feature ?
>
>By the way, can anyone send me a small example program that uses
>MPI_Comm_Spawn ? We tried this in different ways but could not get it to
>work yet.
There are examples about this in lamtests suite which you can download
from the LAM website. Also MPI-2 standard contains some examples.
Powered by LAM/MPI...
---------------------------------------
Nihar Sanghvi
LAM/MPI Team
Graduate Student (Indiana University)
http://www.lam-mpi.org
--------------------------------------
|
