Re: LAM configure changes

From: Brian W. Barrett (
Date: Thu Oct 31 2002 - 10:09:50 PST

On Thu, 31 Oct 2002, Paul H. Hargrove wrote:

> Is the --with-checkpoint option still required?

Nope.  Just --with-cr=DIR, which may not be required if libs are in
default search path.  But I doubt that is the case for you :).

> With regard to  --with-cr-file-dir=DIR, I'd like to say that I think
> that compile time is not the right time to specify the ONLY location for
> checkpoint files (though the last-ditch default could be set at compile
> time.)

Since you are the second person to ask, I should have clarified.  This is
the system default.  The existing env variable and option to mpirun will
over-ride this default.  We had a hard-coded path in the code as the
default, so I figured that this would add more sanity than that :).

> I think that the location of the checkkpoint files is likely to be a
> site configuration option (perhaps as part of the setup of the batch
> system), so something like the etc/lam* files sounds like a better place
> to configure the location.

Probably right.  I was thinking something along the lines of a search
order from 1 - 4:

1) If option to mpirun, use that
2) If env variable, use that
3) If configure option, use that
4) Use $HOME

I believe the env variable is LAM_CHECKPOINT_FILE_DIR, but I could be


  Brian Barrett
  LAM/MPI developer and all around nice guy
  Have a LAM/MPI day: