Bronis,
One comment on recent changes -- because of the matching rules, I am not convinced that nonblocking collectives are always sufficient to eliminate the problem of cyclic dependencies. I think the text added to page 66 based on Christian's comment could use a little tweaking. Specifically, I suggest:
page 66, line 26:
Nonblocking collective operations can be used to avoid such problems.
change to:
Nonblocking collective operations can alleviate this issue. changed to this one - fix will come up in rev. 3.
Best, Torsten -- bash$ :(){ :|:&};: --------------------- http://www.unixer.de/ ----- Torsten Hoefler | Postdoctoral Researcher Open Systems Lab | Indiana University 150 S. Woodlawn Ave. | Bloomington, IN, 474045, USA Lindley Hall Room 135 | +01 (812) 855-3608