mpiexec problem.

[Pete Wyckoff]

slyoung at hamilton.edu wrote on Thu, 21 Jun 2007 14:47 -0400:
> 	Thanks. Garrick Staples suggested on the mpich-discuss list that I
> recompile with  --with-default-comm=pmi which seemed to make it work
> properly. Should I be using that or specify mpich2 vs. pmi? 

They're synonyms.  Maybe it causes more confusion that it solves,
doing that.  I figured nobody but the internals folks would know
what pmi meant.

> PS. While the documentation does spell this out I guess I didn't really
> read it carefully enough. I'll think about it and perhaps I can come up
> with some ideas for you as I bet this is a common error for people just
> starting out. I think for me the hardest part was that it did appear to
> be running properly. I wonder if there is a way to put something in the
> code to report this problem when people try to use mpiexec. (ie. spit
> out "error don't know what comm library to use"). 

Says Garrick the same thing.  Maybe that's a good idea.  It's not
like Myrinet clusters dominate anymore these days, compared to when
that was the only game in town back when mpiexec was born.

		-- Pete