Newsgroups: comp.parallel
From: changj@Jeff-Lab.QueensU.CA (Jianlin Chang)
Reply-To: chang@mjs1.Phy.QueensU.CA
Subject: are synchronous and ready mode necessarily non-bufferd?
Organization: Department of Physics, Queen's University, Kingston, Canada
Date: 21 Dec 1995 04:41:16 GMT
Message-ID: <4anfis$jn7@knot.queensu.ca>

Synchronous, ready and buffered mode are all listed as communication
mode, does this means that Synchronous, ready mode are absolutely
non-buffered? The standard is not very clear, it says for synchronous
mode "the send will complete successfully only if a message receive is
posted, and the receive operation has started to receive the message
sent by the synchronous send". This doesn't indicate the completing of send
means the completing of sending data.

If synchronous send is non-buffered, the completing of send should means
completing of sending data; if synchronous send is buffered, the completing 
of send would not mean the completing of sending data. So the standard is
somehow confusing.

Thanks very much.

-- 
Jianlin Chang (~{3#=(AV~})       Internet: chang@mjs1.Phy.QueensU.CA
Department of Physics            Bitnet:   changj@qucdn
Queen's University               X.400:    Jianlin.Chang@QueensU.CA
Kingston, Ontario K7L 3N6        Tel: (613) 545-2723 (o)
Canada                           Fax: (613) 545-6463
Home address:
58 1/2 Chatham St.               Tel: (613) 547-1353 (h)
Kingston, ON K7K 4G8


