From: Greg Bronevetsky (greg_at_bronevetsky_dot_com)
Date: Tue Feb 28 2006 - 12:09:11 PST
I am a grad student at Cornell, working on checkpointing of MPI
applications. Our checkpointer works with any implementation of MPI and
(in principle) with any single-process checkpointer. However, in
practice integration with single process checkpointers is made more
complex because by default such a checkpointer will save the state of
the entire process, including MPI state. This is generally incorrect as
MPI state contains hardware information that will not be valid on restart.
I know that you've integrated BLCR with LAM, presumably in a way that
doesn't save LAM's state but instead lets LAM save its own state. How
did you do this? Was it via a special API (the callbacks referred to in
your FAQ) or did you use a more general technique?
--
Greg Bronevetsky