Application-directed C/R will still require
some quiescence hooks from the MPI layer (ex: asyncronous progression by
the MPI layer). There was some discussion on this.
What kind of quiscence are you thinking of? It seems to me that
applications will simply need to ensure that either no messages are
in-flight at the time of the checkpoint or that all such messages have
been logged appropriately by the application.
Greg Bronevetsky
Post-Doctoral Researcher
1028 Building 451
Lawrence Livermore National Lab
(925) 424-5756
bronevetsky1@llnl.gov