Donnie,
I think the real solution here is to use modules (
http://modules.sourceforge.net ) to handle the different versions of mpi. I
filed a bug about using this for switching alternate virtuals a couple years
ago, but nobody seemed to be particularly interested. I've got a grad student
working on something to let users switch between mpi for gcc and mpi for the
portland group compilers. I am most certainly not the right person to do the
heavy lifting on this, but I do have an ebuild for modules I could contribute to
the cause.
Andy
Donnie Berkholz wrote:
Hi all,
One thing we really, really need to get working is allowing multiple MPI
implementations to be installed at once and having a tool to switch
between them at two levels: system, and per-user [1].
The system level could operate via symlinks where needed and system
variables such as LDPATH in /etc/env.d/, and the per-user level would
have to operate using purely user-level environment variables.
In my opinion, this is the single biggest thing we need right now to
make Gentoo better for clustering, particularly as we start adding more
MPI implementations such as mpich2 and open-mpi.
I've spoken to a few people about making this happen in the past, but
they all seem to have disappeared. Would anyone like to take this task on?
Thanks,
Donnie
1. http://bugs.gentoo.org/show_bug.cgi?id=44132
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