Ralph Castain wrote:
Ummm....not to put gasoline on the fire, but...if the data exchange is
blocking, why do you need to call a barrier op first? Just use an
appropriate blocking data exchange call (collective or whatever) and it
will "barrier" anyway.
Since I don't run these codes, I would have to defer to those that do.
This said, I am not sure if they are running the coupling as two
separate MPI codes or as one code sharing a communications handle or
whatnot else.
I do agree that letting the data exchange provide a (natural) barrier
makes a great deal of sense, though the codes may not be amenable to
this mode of operations. Gerry could likely shed light on this.
--
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: land...@scalableinformatics.com
web : http://www.scalableinformatics.com
http://jackrabbit.scalableinformatics.com
phone: +1 734 786 8423 x121
fax : +1 866 888 3112
cell : +1 734 612 4615
