[mpi3-coll] More on in-place
moody20 at llnl.gov
Mon Feb 2 13:31:32 CST 2009
I think we need another statement about the in-place option in the text
regarding buffer access. Something along the lines of:
When using the "in-place" option, message buffers may function as both
send and receive buffers. Such buffers should not be modified or
accessed until the operation completes.
This is somewhat unique to NBC. However, this statement is necessary
for blocking collectives in threaded environments, as well. Did the
"Send buffer access" ticket resolve this? Either way, it might not hurt
to reiterate this point in the NBC intro, since it is more likely to
come up there.
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