Newsgroups: comp.parallel.mpi
From: Erik Demaine <eddemain@daisy.uwaterloo.ca>
Subject: Re: What is the software overhead of SP2?
Organization: University of Waterloo
Date: Fri, 7 Mar 1997 13:27:20 GMT
Message-ID: <E6oDDK.95w@undergrad.math.uwaterloo.ca>

Jinsheng Xu <xujinshe@cps.msu.edu> wrote:
: What is the software overhead of SP2 of short message? How can
: we measure it?

The results I have from an IBM article are: 39 microsecond latency (zero byte
message), 35.5 megabytes/second ("infinite" size message).  In between, the
time is very linear.

Erik
-- 
Erik Demaine                 ()  e-mail: eddemain@daisy.uwaterloo.ca
Dept. of Computer Science    ||  URL: http://daisy.uwaterloo.ca/~eddemain/
University of Waterloo       ||  PGP key: finger me.  "Maturity is switching
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