Newsgroups: comp.parallel.pvm
From: vanvoors@nidhug.src.honeywell.com (Brian VanVoorst)
Subject: Re: Statistics about PVM communication paterns
Organization: Honeywell Technology Center
Date: 18 Jul 1995 08:43:54 CDT
Message-ID: <3ugdqq$i1p@moon.src.honeywell.com>

|> I am interested in collecting statistics of PVM usage, in particular I am
|> looking for information on PVM communication patterns, such as number of
|> messages and typical message sizes used by various applications.  I am not sure
|> if such information has been collected before and I am prepared to do some work
|> myself. 

My thesis was a similar study designed to characterize the communication patterns
in the applications run at the NASA Ames Research Center on their 128 node Intel
Hypercube.  In short, I modified the OS to collect various summary statistics on
each job including number of msgs, size of msgs, distance traveled, (etc. and so
on).  Data was collected for every job that ran under the OS.  We sampled
for 10 days total.  From this we were able to observe interesting patterns, make
observations on improving protocols, identify heavly used library routines, and
project how the communication would preform on hardware with different latency
and bandwidth.

If you are interested in more information please write to me.

Brian VanVoorst
vanvoors@src.honeywell.com  

