On Feb 28, 2006, at 11:09 AM, Frans Verster wrote:
> With your script I installed LAM 7.1.1/MPI 2 C++/ROMIO with SSI rpi:
> crtcp lamd sysv tcp usysv ina about 20 min on the head node. So far
> so good.
>
> How do I specify to use Myrinet or Infiniband, depending on the
> cluster?
> Can I query the installed MPICH about that and tell LAM to do so?
This is one of those not so fun areas. The simple answer is that you
configure LAM with --with-ib=DIR and --with-gm=DIR, where DIR is the
location containing IB or GM. The hard part is finding out those
values. I don't believe MPICH has a way of finding that out from the
user commands (to be fair, neither does LAM). There are some common
places to look, but it's usuaully pretty hunt-n-peck. If GM / IB are
completely installed and locate is properly configured, you can
always do some creative string parsing by looking for the vstat (IB)
and gm_board_info (GM) commands, and figuring out the prefix from there.
Brian
--
Brian Barrett
LAM/MPI developer and all around nice guy
Have a LAM/MPI day: http://www.lam-mpi.org/
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