Newsgroups: comp.sys.transputer,comp.ai.neural-nets
From: shers@HING.LCS.MIT.EDU (Alex Sherstinsky)
Subject: Re: Q: Hopfield nets on transputers?
Keywords: hopfield net, neural nets,
Organization: MIT Laboratory for Computer Science
Date: 7 Jul 1994 20:15:57 GMT
Message-ID: <2vhnpt$hok@GRAPEVINE.LCS.MIT.EDU>

In article <2vhe4n$184c@obelix.uni-muenster.de> rentmei@asterix.uni-muenster.de (Jahn Rentmeister) writes:
#Hello netters!
#
#I'm searching for any information on how to get a hopfield net parallelized
#on a transputer-system. (32 T805's in a Multicluster 2 in this case.)
#
#I know they can be parallelized "quite easily" using special hardware, but
#with the four links of transputers the inter-node-communication appears to 
#be a bottleneck for every "straightforward" implementation. But maybe we
#missed some particular straightforward way? (The bottleneck does not seem to
#become much wider if we use virtual links.)
#
#I'd appreciate any pointers to literature, ftp-sites, articles, papers,
#implementations, and so on that could help me with this task. Direct
#recommendations on how to do it are very welcome too, of course.
#
#I'm not really engaged in coding the network but I'm helping parallelizing
#it. (So I'm no expert in neural nets/hopfield nets, but have experts at
#hand, so feel free to mail answers difficult to understand.)
#
#I'm definitely not able to switch hardware. (If other hardware would be
#used the whole issue would not bother me.) That's why I'm posting to
#comp.sys.transputer. (Additionally to posting to comp.ai.neural-nets.)
#
#If possible, please reply per e-mail, I'll post a summary where I will also
#include any reference I might find "outside usenet".
#
#For those who might wonder - I've been among them little time ago:
#A hopfield net is a special neural net often used for optimization.
#
#--
#Jahn Rentmeister, rentmei@uni-muenster.de, wijare@wi.uni-muenster.de
#Institut fuer Wirtschaftsinformatik, Universitaet Muenster, Germany
#(No, I don't know how to translate my address into english.)

The Hopfield network is a subclass of the M-lattice system.  We have the
universal simulator available via the ftp.  Compiles on the CM-2, DECs, SUNs,
and HPs.  whitechapel.media.mit.edu/pub/shers/xml.tar.Z -- ENJOY!
-- 
+---------------------+-------------+------------------------------------------+
|Alexander Sherstinsky|shers@mit.edu|To become as refined a person as possible.|
+---------------------+-------------+------------------------------------------+

