Re: [OMPI devel] failure with
zero-lengthReduce()andbothsbuf=rbuf=NULL
I misparsed your reply. Yes, bcast(1) *can* sync if it wants to. I
don't have a spec handy to check if bcast(0) is defined or not (similar
to reduce). If it is, then sure, it could sync as well.
My previous point was that barrier is the only collective that is
*required* to synchronize.
Where does bcast(1) synchronize?
(Oops on typo - if reduce(1) wasn't defined, that definitely would be
bad :) )
To clarify my comments on this thread...
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