Hello Alexander,

Thank you. The pt2pt progress comment below was taken into account when you removed the nonblocking collective progress description. ah, ok - so I think a reference to the chapter should be sufficient.

As for the example, if it is legal, we should probably count the blocking operations as well when we decide how many simultaneous ops are to be supported. yes, maybe. I am not sure but this could be an issue. It's on the agenda https://svn.mpi-forum.org/trac/mpi-forum-web/wiki/forum201008

Why "if" above: I'm not sure what a delayed nonblocking barrier would mean for process 1. Won't one process possibly block somewhere? Can you explain this please? the barriers will only block in the respective MPI_Wait() (or a tight MPI_Test() loop). But the operation can be initiated as soon as the critical region is left (and there mihgt be some other independent computation to do).

The format matter is complicated. I think it is worth discussing at the Forum as we're likely to have more and more proposals approaching the final stage, when editing them in PDF format will become an issue. yes, it's on the WG agenda - maybe we should discuss this in the whole forum?

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