ch_p4 / shmem on SMP linux cluster

[Pete Wyckoff]

eisenmenger at fmp-berlin.de wrote on Sun, 13 Feb 2005 11:02 +0100:
> Yes, for sure. It might be also useful to add examples for configuration of mpich with mpiexec to the docu of mpiexec. 

Good advice.  I added:

diff -u -r1.46 README
--- README      21 Sep 2004 14:19:19 -0000      1.46
+++ README      14 Feb 2005 19:06:46 -0000
@@ -197,6 +197,14 @@
        "-mpich-p4-shmem" can be used to specify MPICH/P4 configuration
        information explicitly at runtime, overriding this compile option.
 
+       To summarize, configure lines should match as follows:
+           mpich/configure --with-device=p4 --with-comm=shared ...
+           mpiexec/configure --with-default-comm=mpich-p4 ...
+       Or
+           mpich/configure --with-device=p4 ...
+           mpiexec/configure --with-default-comm=mpich-p4
+             --disable-p4-shmem ...
+
     MPICH/IB
 
     --disable-mpich-ib


> Lubos, who issued the recipe in http://structbio.vanderbilt.edu/archives/amber-archive/2004/1080.phtml, has sent scripts for submitting jobs to PBS with mpiexec to me.
> I am also compiling some scripts, which make it easier for our people to submit jobs to the cluster. I'll forward those scripts to you, when finished. Might be of interest.

Yes, thanks.

> Sorry, but could you, please, add lines for 'ifort', too, and tell what the patch command should look like.

Try it first.  If it doesn't work I'm sure you can figure it out or
fall back on the changes to amber.

		-- Pete