sjc@cs.purdue.edu (Steve Chapin) (04/30/91)
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From: mayne@sun16.scri.fsu.edu (William (Bill) Mayne)
Subject: Re: Seeking Distributed Programming environments
Organization: SCRI, Florida State University
After thinking about it a little more I realized that your
definition of "task partitioning" may not be at all what I was
thinking about. Actually I am tentatively using "task decomposition"
to describe what I'm working on. I note that "task partitioning", as
used, for example, in Sarkar ["Partitioning and Scheduling Parallel
Programs for Multiprocessors", MIT Press (1989)] appears to more in
the set theoretic sense, dividing a set of already separated
computational elements into groups, with the goal being that at least
some of the groups will have more than one element to reduce overhead.
What I am doing is dividing tasks into smaller units to get more
parallelism, though there is also an element of recombining if
the parts turn out to be too small for efficient execution in the
target environment. The latter might more properly be called partitioning.
Am I right in my guess of the kind of thing you are doing?
I'd still like to hear about it, if only briefly, and especially
if you have an authoritative source for how the term "task partitioning"
should be used.
If you'd like I'll check with my advisor to see if the message
passing library stuff he and some masters students developed a
couple of years is useable and can be sent to you. If my memory
serves me correctly their package might have been called "Hermes".
I don't know if it was related to the IBM Hermes you mentioned.
I doubt it since they were working on Suns, VAXes, and the now
defunct ETA-10, but no IBM platforms, as far as I know.
Regards,
Bill Mayne
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From: new@ee.udel.edu
Re: Hermes...
You might want to ask them what they mean be "derivative works." If
they mean new versions of the compiler, it seems reasonable and not
"draconian" to me. I don't think they mean code written in Hermes.
-- Darren
[ an excellent point. Art's response below indicate's that I leapt
before I looked -- sc]
--
--- Darren New --- Grad Student --- CIS --- Univ. of Delaware ---
----- Network Protocols, Graphics, Programming Languages, FDTs -----
+=+=+ My time is very valuable, but unfortunately only to me +=+=+
+=+ Nails work better than screws, when both are driven with screwdrivers +=+
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From: flibedin%taurus.bitnet@TAUNIVM.TAU.AC.IL
Subject: Re: Seeking Distributed Programming environments
Organization: Tel-Aviv Univesity Math and CS school, Israel
I suggest you to take a look at Polylith from the university of Maryland.
It is a Software Bus abstraction for programming hetereogeneous distrubuted
systems. You can find the sources and documentation at flubber.cs.umd.edu,
anonymous ftp.
Another choise is the SR distributed programming language, ftp : cs.arizona.edu
and another one is the Aero system( ex-marionnete), ftp : icsi-ftp.berkeley.edu
directory pub/dash
and the last one is NMP (network multiprocessor), ftp : menaik.cs.ualberta.ca
all the packages containg software and documentation, and if you need more
papers references I could provide some for you.
I hope this will help.
Fernando Libedinsky
Tel-Aviv University
flibedin@math.tau.ac.il
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--
=========================== MODERATOR ==============================
Steve Stevenson {steve,fpst}@hubcap.clemson.edu
Department of Computer Science, comp.parallel
Clemson University, Clemson, SC 29634-1906 (803)656-5880.mabell