HDTenEightyP/NetNews huggingface dataset:
From: kumar@moose.cs.umn.edu (Vipin Kumar)
Subject: Supercomputing 92 Workshop on Scalability
Apparently-To: comp-parallel@uunet.uu.net
Organization: University of Minnesota
Date: Fri, 6 Nov 1992 00:07:25 GMT


                      Supercomputing 92 Workshop
                                 on
     Analyzing  Scalability  of  Parallel Algorithms and Architectures

                   Thursday November 19 (2:00pm - 5:30pm)


                              Organizer

                             Vipin  Kumar
                       Computer Science Department
              Army High peformance Computing Research Center
                         University of Minnesota
                          Minneapolis,     MN    55455
            Tel:    612-624-8023  internet:kumar@cs.umn.edu FAX: 612-625-0572


Motivation and Objective:
 
Scalability of a parallel computer system denotes the degree to which
the system can effectively use increasing number of processors.
Scalability analysis could be used to predict/analyze performance
when the parallel computer is scaled up in terms of number of
processors, processors speed and the speed of communication.
It could be used for designing better parallel algorithms and architectures.
The need for a concept of scalability both with respect to the
architecture and the algorithm (implemented on the architecture) has
been well established.

Yet, there is no consensus on how the scalability of a
parallel system should be determined. A number of widely differing
metrics have been proposed for determining scalability.  For example,
some of them study the performance under fixed time, or fixed problem size, 
or fixed memory, or fixed efficiency.  Some try to capture performance
with respect to idealized architectures.  Some are independent of the
parallel architectures, and some ignore the application/algorithm but
only try to capture the scalability of the architecture.

The objective of this workshop is to critically assess the state of the art
in the theory of scalability analysis, and motivate further research. 
The workshop will consist of short  presentations by various
researchers, and discussion sessions involving presenters and participants.



If you would like to participate in the workshop, please contact
Vipin Kumar (kumar@cs.umn.edu) as soon as possible.

Newsgroups: comp.parallel,comp.lang.misc
From: apctrc!zkdc05@uunet.UU.NET (Kelly D. Crawford)
Subject: Re: PVM vs. Express
Apparently-To: uunet!comp-parallel
Originator: zkdc05@church
Organization: Amoco Production Company, Tulsa Research
Date: Fri, 13 Nov 1992 15:10:34 GMT


PVM has been integrated with a product from Florida State (SCRI) called
DQS (also free -- ftp ftp.scri.fsu.edu or ftp 192.70.169.254 in the file
pub/DQS/DQS.REV_2.0.tar.Z).  DQS stands for Distributed Queuing System
and is a way of combining some load balancing, etc with PVM.  Really
powerful stuff.

Kelly
-- 
Kelly D. Crawford             | Amoco Production Research | These are my own
kcrawford@trc.amoco.com       | 4502 East 41st Street     | opinions, not
phone: (918) 660-4043         | Tulsa, OK  74102          | Amoco's...
          >>> *** This line intentionally left blank *** <<<

Newsgroups: comp.parallel
From: tom@robots.ox.ac.uk (Tom Burke)
Subject: MS-Windows access for transputers
Followup-To: comp.sys.transputer
Originator: tom@lucrece.robots
Keywords: MS-Windows, Transputers
Organization: Robotics Research Group, Engineering Science Dept, Oxford, UK.
Date: Mon, 9 Nov 1992 23:05:33 GMT

Hi,
	I'm using a PC as a transputer host and was wondering if
anyone out there in netland have written an extension to ``iserver''
which allows access to Microsoft Windows facilities?  A public domain
program would be preferable but any good commercial packages would
also be of interest.

	Thanks in advance,

Newsgroups: comp.parallel
From: mlevin@husc8.harvard.edu (Michael Levin)
Subject: a question on C* (Connection Machine) syntax
Organization: Harvard University Science Center
Distribution: usa
Date: 9 Nov 92 22:11:03 EST


    The following short C* code does not compile. The  error given by
cs is:

"x.cs", line 12: bad operand combination for =

   the only difference between lines 12 and 10 is that the
pre-declaration of b() has a float as an argument, and  the one for
a() does not. If I change b to take int:plane, it compiles. Why is
this so? The regular C compiler has no problem with it (without the
:plane). If anyone knows what the problem is, please let me know at
mlevin@presto.cs.tufts.edu. 

shape [128][128]plane;

int:plane a(int:plane p); 
int:plane b(float:plane p);

int:plane (*which_funct(s))()
char *s;
{
  if (!stricmp(s,"A"))
    return(a);
  if (!stricmp(s,"B"))
    return(b);
}

Newsgroups: comp.parallel
From: tomg@mishima.MN.ORG (Thomas Greenwalt)
Subject: Articles about parallel systems?
Apparently-To: <hypercube@hubcap.clemson.edu>
Organization: Alternate Realities
X-Newsreader: TIN [version 1.1 PL6]
Date: Sun, 8 Nov 1992 05:52:12 GMT

I am finishing up a homebrew dataglove for some home VR experiments and
have been thinking about setting up a stack of PC's in the corner and
linking them together to give me an inexpensive distributed processing
net.  One of my clients uses QNX which seems to have a fairly stable
implementation of this.  But thats about the only thing I like about
QNX.

Basically I'm thinking about writing an operating system and language that 
is geared toward VR applications and I see a long snowy winter ahead with
not much else to do.

I am looking for articles, books, etc that describe distributed processing
implentations.  Any recommendations would be appreciated.  Thanks.

-- 
Thomas S. Greenwalt (Tom-Too)                                  (612)866-1344
7300 Nicollet Ave. S, Mpls, MN 55423                     tomg@mishima.mn.org 
-------------- Death: SEE! I HAVE TIME! AT LAST I HAVE TIME! ---------------
--- Alfred: And now that you have it, what are you going to do with it? ----

Newsgroups: comp.parallel
From: jgraham@uahcs2.cs.uah.edu (Jay Graham)
Subject: Testing Parallel Code
Apparently-To: comp-parallel@rutgers.edu
Reply-To: jgraham@uahcs2.cs.uah.edu (Jay Graham)
Organization: Computer Science Dept. - Univ. of Alabama in Huntsville
Date: Tue, 10 Nov 92 19:12:34 GMT

I am currently researching current parallel testing technology and would be
very appreciative if persons currently involved in parallel computing could
answer the following questions:
	1) What is your target machine (iPSC/2, Convex, Alliant, MasPar, etc.)?
	2) Programming language?
	3) Common programming problems encountered (deadlock, race conditions,
		etc.)?
	4) Testing techniques (Static analysis, dynamic analysis, etc.)?
	5) Testing tools used (Vendor specific debuggers, performance analyzers,
		etc.)?

Please E-Mail responses to jgraham@uahcs2.cs.uah.edu with the subject header
"survey".

Thanks in advance,

Jay Graham
From: alan@msc.edu
Newsgroups: comp.parallel
Subject: Re: array/mesh embedding in fat tree
Date: 11 Nov 92 16:40:01 GMT
Article-I.D.: hubcap.1992Nov12.130951.1892
Organization: Clemson University

>From: lnieplo3@ua1ix.ua.edu (Jaroslaw Nieplocha)
>Does anyone know any reference to a paper(s) dealing of embedding (mapping)
>of the linear array and 2D mesh networks in the fat tree? 

``Performance Evaluation of the CM-5 Interconnection Network,''
M. Lin, R. Tsang, D. H. C. Du, A. E. Klietz, and S. Saroff,
(AHPCRC Preprint 92-111) describes several embedding schemes
for low-dimensional meshes and measures their behavior on the CM-5
data network.  It will be presented next week at the Supercomputing '92
poster session.

Preprints and a summary of abstracts of all AHPCRC technical reports
are available from

	Army High Performance Computing Research Center
	1100 South Washington Avenue
	Minneapolis, MN 55415
	Attn: Jeanine Maiden  (maiden@ahpcrc.umn.edu)
	Tel +1 612 626 1550
Newsgroups: comp.parallel
From: rmunk@cs.uni-sb.de (Ralf-Werner Munkes)
Subject: 3rd conference on hypercube concurrent computers
Organization: Universitaet des Saarlandes
              D-W-6600 Saarbruecken, Germany
Date: 10 Nov 92 14:35:00 GMT


who can tell me where i can find (via ftp) articles from the

3rd conference on hypercube concurrent computers  ?


i'm interested in everything concerning intel's ipcs-systems


Ralf-Werner Munkes                email : rmunk@sol.cs.uni-sb.de
Department of Computer Science
Universitas saraviensis
Saarbruecken, GERMANY


Newsgroups: comp.parallel
From: newsmgr@doc.bmd.trw.com
Subject: Masters Thesis in Parallel Image Compression
News-Moderator: Approval required for posting to comp.parallel
Organization: Clemson University
Date: 9 Nov 92 22:06:59 MST

Hi all,

I've been working on a master's thesis in computer science on the topic of
parallel image compression.  While I have direction I've moving in I seem to be
a bit behind in finding articles about this area.  I have found maybe 4 but
could sure use some help if any of you might have some handy.  I'll gladly take
pointers also to any ftpable alogrithms if any.

Thanks for your help,

Jeff VanderDoes

jvander@oz.bmd.trw.com
From: cyberman@toz.buffalo.ny.us (Cyberman)
Newsgroups: comp.robotics
Subject: Re: on 74ls139
Date: 10 Nov 92 01:24:46 GMT
X-Maildoor: WaflineMail 1.00r


   Kenneth Mtz. (yonix) was espousing about 'on 74ls139',
   on [11-04-92  20:53] to All!
 KM(> Could anyone tell me more about what this device does (?)
 KM(> What is the pinout layout?

    That is a dual 4 line decoder here is the pinout

                __ __
Enable     1G  |1 U16| VCC
Select   / 1A  |2  15| 2G   Enable
         \ 1B  |3  14| 2A \ Select
          /1Y0 |4  13| 2B /
Data     / 1Y1 |5  12| 2Y0 \
Outputs  \ 1Y2 |6  11| 2Y1  \ Data
          \1Y3 |7  10| 2Y2  / Outputs
           GND |8   9| 2Y3 /

outputs are active LOW
Enable active low.

    Cyberman
... Don't steal...the government hates competition
--- Blue Wave/QWK v2.10
                                                                                                                    
Newsgroups: comp.robotics
From: abg@mars.epm.ornl.gov (Alex L. Bangs)
Subject: Inertial Navigation
Organization: Oak Ridge National Lab/CESAR
Distribution: na
Date: Wed, 11 Nov 1992 14:07:51 GMT

I'm posting this to a co-worked in CESAR. Please e-mail responses to him; I
will request that he assemble a summary that I will then post. Thanks!

------

We are interested in Inertial Navigation systems for mobile robots.
The system would consist of a 3 axis gyroscope and 3 accelerometers
mounted on three orthogonal axes.  Our goals for angular precision 
are 0.1 degree/hour.  Our goals for linear motion are one part
per million.  Our goal for cost is under 20K.

Please e-mail reponses to dbr@ornl.gov.

Thanks!

-- 
Alex L. Bangs ---> bangsal@ornl.gov         Of course, my opinions are
Oak Ridge National Laboratory/CESAR            my own darned business...
Autonomous Robotic Systems Group
Newsgroups: comp.robotics
From: andre@maties.sun.ac.za (ANDRE SKARZYNSKI)
Subject: Insect robot chassis wanted.
Organization: Electronic Engineering, University of Stellenbosch, South Africa
Date: Mon, 9 Nov 1992 10:48:47 GMT

Hi,

I hope this is not a FAQ, but I am looking for an insect robot chassis that
is ready made or in kit form. Please mail me, or post any info about 
companies or institutes that sell such kits. 

Thanks in advance.

Regards
Andre.
Organization: Queen's University at Kingston
Date: Tue, 10 Nov 1992 00:22:52 EDT
From: Ralph Siemsen <3034871@QUCDN.QueensU.CA>
Newsgroups: comp.robotics
Subject: Seeking high-resolution ultrasound system

We're looking for some ultrasonic (or otherwise) detector to measure
distances of 5-15 cm to an accuracy of +- 0.5cm or better.

The intended application is to measure the angle (by triangulation)
of a monopod robot relative to the ground. We have considered
accelerometers, but the bouncing action of the robot makes them
innefective. Commercial angle sensors are expensive ($1500) and we
really only care about a small range of angles (20 degrees), rather
than the full 180 degrees that most commercial units offer.

So it would be quite easy to measure the distance to the ground from
a platform atop the robot. All we need is a nice sensor.

Perhaps it is possible to adapt the Polaroid Ultrasonic Kit for use over
this shorter range, and improve the sensitivity somehow. Anyone have
any experience?

Any ideas would be greatly appreciated.

Ralph Siemsen / Engineering Physics / Queen's University at Kingston
E-mail:  <3034871@QUCDN.QueensU.CA>
From: collins@emperor.gatech.edu (Tom Collins)
Newsgroups: comp.robotics
Subject: Re: MIT ex-staff
Date: 5 Nov 92 15:17:16 GMT
Organization: CERL-EE, Georgia Institue of Technology

In article <1992Nov5.103715.17229@infodev.cam.ac.uk> grlw1@phx.cam.ac.uk writes:
>Does anyone know what happened to J.Conell, Rodney Brooks' student who
>boult many ofthe interesting robots that have come out of the MIT labs
>in the last few years? Any information appreciated, as a friend of mine

He is at the IBM T.J. Watson Research Center in Yorktown Heights, NY.
I can't seem to find an email address at the moment.

He continues to work on mobile robots, including a structured light
sensor on IBM's "TJ".  Some brief mention of this system may be
found in the upcoming (December) issue of Popular Science.


-- 
Tom Collins                               tom.collins@ee.gatech.edu
Georgia Institute of Technology           (404) 894-2509
400 Tenth St. NW, CRB 384
Atlanta, GA  30332-0540
From: pgm2@waikato.ac.nz
Newsgroups: comp.robotics
Subject: Lego robotics
Date: 6 Nov 92 14:22:31 +1300
Organization: University of Waikato, Hamilton, New Zealand

I am a new user on NEWS, so forgive me if I am asking the wrong conference or
if this information is somewhere else

My name is Phillip Middlemiss, an undergraduate at Waikato University finishing
off a computers and maths degree.
The department has got hold of a "Lego construction set" which has all the
motors, sensor pads, and other extras. It is possible to control the moters etc
via a computer.
For a project, I am to build various types of robotic experiments for next
years AI class.  The experiments will be things like the Blocks-world problem.

What I wanted to know was if anyone knows of previous work that has been done
in this area. I cannot find any research information in our library at varsity
at all.
The information I am interested in is:
Languages that can be used to program the set;
any previous robots or similair that have been built;
the types of things that can be doone with the lego construction set.
Newsgroups: comp.robotics,sci.edu,misc.education
From: przemek@tokamak.viewlogic.com (Przemek Skoskiewicz)
Subject: Engineering competition...
Originator: przemek@tokamak
Organization: Viewlogic Systems, Inc.
Date: Wed, 11 Nov 1992 23:32:14 GMT


I'm posting this for my brother, so please don't reply to me.  The contact
address, telephone number and email are listed at the end of the message.  From
myself I can add that the competition is run ala MIT's 270 course in the
Mechanical Engineering department.



			FIRST Encounters

  After a very successful pilot competition called 'Maize Craze', U.S. FIRST,
a not-for-profit organization whose goal is to increase elementary and high
school students' level of interest in math and science, is doing it again.
FIRST Encounters is the national creative engineering competition featuring 
school, business and university partnerships.  Played out in the spirit of
sport, the competition immerses 9th and 10th grade students in the exciting
world of engineering.  Teams consisting of participating students and
engineers from partner business or university will have 6 weeks to design
and build a working 'vehicle' which will then go head to head in a four-team
gladiator-style competition on a specified arena.  The national championship
will be held on February 26 and 27 in Manchester, NH.
   If you would like to enter a team, call U.S. FIRST at (603) 666-3906,
FAX (603) 624-0573.  Entrance fee required.  Email: anjay@mecha.mit.edu


-- 
Viewlogic Systems, Inc.                         Przemek Skoskiewicz
293 Boston Post Road West
Marlborough, MA 01752-4615, USA
email: przemek@viewlogic.com
Newsgroups: comp.robotics
From: ted@nmsu.edu (Classic Ted)
Subject: microcontrollers
Reply-To: teller@nmsu.edu
Organization: Computing Research Lab
Distribution: comp
Date: Thu, 12 Nov 1992 23:52:03 GMT



MY PLEA:

I will be teaching a course in during the Spring semester for which I 
DESPERATELY need 8-10 MC68HC811E2FN microprocessors.  If you could sell
me any number <= 10, I would be very appreciative.  Thanks in advance,

We also would be interested in coordinating a bulk order if anybody
can locate parts.

Pat Teller, New Mexico State University

Newsgroups: comp.robotics
From: poussart@gel.ulaval.ca (Denis Poussart)
Subject:  looking for actuators
Keywords: actuators, direct drive
Reply-To: poussart@gel.ulaval.ca
Organization: Dept. Genie Electrique, Universite Laval
Date: Thu, 5 Nov 1992 16:10:17 GMT

We are looking for high-performance, compact, direct-drive actuators
for a robotic application. The range of motion of the actuators will be
of 180 degrees approximately and the maximum speed equivalent to
200-300 rpm. The maximum torque should be of the order of 0.5 Nm. Any
suggestion on companies which would offer this type of product is
welcome.


---
Denis Poussart 						phone: 	(418) 656-3554
Computer Vision and Digital Systems Laboratory		fax: 	(418) 656-3594
Department of Electrical Engineering 			e-mail: bergevin@gel.ulaval.ca
Laval University, Quebec (Quebec) CANADA G1K 7P4


Newsgroups: comp.robotics
From: grimaldo@tokyo.seri.philips.nl (Emilio Grimaldo)
Subject: Re: POLL: Microcontrollers
Organization: Philips Semiconductors, The Netherlands 
X-Newsreader: Tin 1.1 PL4
Date: Tue, 10 Nov 1992 15:38:15 GMT

grimaldo@tokyo.seri.philips.nl (Emilio Grimaldo) writes:
: :      I am trying to conduct a (non-scientific) poll about popular micro-
: 
:        I STILL NEED MUCH MORE INPUT, OTHERWISE IT WOULD NOT BE A
:        POLL, PLEASE TAKE SOME LITTLE TIME. TO THOSE THAT HAVE
:        SENT THEIR OPINION I THANK YOU FOR TAKING THE TIME TO RESPOND
:        TO THIS POLL.
: 

--
NAME:    D. Emilio Grimaldo T.                                   _/_/_/_/
EMAIL:   grimaldo@tokyo.sce.philips.nl                        _/_/_/ 
ADDRESS: PO Box 218,BE-543,5600 MD Eindhoven,The Netherlands   _/_/_/_/ 
------------------------------------------------------------------------------
     * * PERSONAL OPINIONS AND THEREFORE NOT REPRESENTING MY EMPLOYER * *
------------------------------------------------------------------------------
"Earth's largest project is also going wrong: humanity..." -me
"To love is to smell the fragance of a soul's inner beauty..." -me
Newsgroups: comp.robotics
From: tlhouns@ns.pacbell.com (Lee Hounshell)
Subject: Re: Cheap, light orientation sensor needed
Organization: Pacific Bell
X-Newsreader: TIN [version 1.1 PL6]
Date: Fri, 6 Nov 1992 16:55:54 GMT

galsci!mpearce wrote:
: I'm looking for a small, cheap, and light orientation sensor that
: will work with the Miniboard...

I'm in need of something to perform this function as well.
I had an idea for constructing one using "bend" sensors with weights attached
to one end.  As the robot's orientation would change, the sensors would move
(because of gravity pulling the weights).  If several of these sensors were
placed strategically inside a robot's chassis, I suspect that one could calculate
the robot's orientation fairly accurately.  Any comments?

--
Lee Hounshell - (510) 823-2432
tlhouns@srv.pacbell.com
Alchemical Engineer and Virtual Realist
Newsgroups: comp.robotics
From: wpns@miki.pictel.com (Willie Smith)
Subject: Re: Power supply for robots
Organization: PictureTel Corporation
Date: Thu, 5 Nov 1992 10:55:38 GMT

In article <Bx4o8E.Ax4@alsvid.une.edu.au> rbyrnes@alsvid.une.edu.au (Rod Byrnes) writes:
[...]
>I have also been toying with the idea of using a fuel cell to keep the battery
>continually charged. This would require "feeding" the robot with cylinders
>of hydrogen and oxygen, and controlling the flow of each to the cell.
>"Recharging" the robot would then be the simple and quick process of changing
>the cylinders.

I'd be real wareful about playing with hydrogen.  It's not only
incredibly flamable, but it's hard to keep hydrogen from leaking,
hydrogen flames are invisible(!), and the explosion possibilities are
real interesting.

Willie Smith
wpns@pictel.com
From: nivek@cs.cmu.edu (Kevin Dowling)
Newsgroups: comp.robotics
Subject: Re: WANTED: robotics-faq
Date: 10 Nov 92 17:00:10 GMT
Reply-To: nivek@cs.cmu.edu
Organization: Robotics Institute, Carnegie Mellon

I've included the following in the new FAQ. I have checked
all listed sites and archives with the exception of the uucp connection.
If you don't understand terms, programs etc please read news.announce.newusers
_____________________________________________________________________________
Where to find this FAQ:

This FAQ is currently posted to news.answers and comp.robotics.  All
posts to news.answers are archived and are available via anonymous
FTP, uucp and e-mail from the following locations:

FTP:
	location:  pit-manager.mit.edu [18.72.1.58]
	directory: /pub/usenet/news.answers/robotics-faq
	filenames: part1, part2

	location:  ftp.uu.net [137.39.1.9]
	directory:  /archive/usenet/news.answers/robotics-faq
	filenames:  part1.Z, part2.Z [use uncompress]

	location:  nic.switch.ch [130.59.1.40]
	directory: info_service/Usenet/periodic-postings
	filenames: 157, 158 [Check info_service/Usenet/00index if wrong]

	location:  ftp.cs.cmu.edu [128.2.206.173]
	directory: /user/nivek/robotics-faq
	filenames: part1, part2

UUCP:
	location:  uunet!/archive/usenet/news.answers/robotics-faq/
	filenames: part1.Z, part2.Z

E-mail:
	Send email to mail-server@pit-manager.mit.edu containing these lines:
	send usenet/news.answers/robotics-faq/part1
	send usenet/news.answers/robotics-faq/part2



---

aka: Kevin Dowling			Carnegie Mellon University
tel: (412) 268-8830			The Robotics Institute
adr: nivek@rover.ri.cmu.edu		Pittsburgh, PA 15213
Newsgroups: comp.robotics
From: dejohnso%asylum.cs.utah.edu@cs.utah.edu (David Johnson)
Subject: Measuring Distance
Date: 10 Nov 92 17:37:56 MST
Keywords: distance, contact 
Organization: University of Utah CS Dept

Hello,

I am looking for prices on and suppliers of small linear potentiometers - ones
that can measure a few cm with at least mm accuracy.  Any suggestions?

Thanks,

David Johnson
dejohnso@cs.utah.edu
From: rg9538@ehsn2.cen.uiuc.edu (Ronald E Garnett)
Newsgroups: comp.robotics
Subject: HC11 Floating Point Routines
Date: 8 Nov 92 03:38:56 GMT
Organization: University of Illinois at Urbana




Help!  I'm looking for a library of assembly routines for floating point.
I don't have time to write them myself.  I have access to a C compiler
which has a floating point library, but the code size is (relatively)
enormous.  Also, if anyone has any great ways to convert a floating
point to a string, please tell me.  I devised a way using floating
point log10() and pow10().  pow10(x) simply raise 10 to a power of X.
This works, but is probably not optimal.

	if (preference == E-Mail) {
	
		Address = rg9538@ewshp.cen.uiuc.edu;

		send( mail, address);

	} else {

		post( message, group );

	}


Regards,

Ron Garnett

University of Illinois at Urbana-Champaign
(Every time i write that, I get thirsty for some reason)




P.S.  Is there a 68HC11 group out there? Methinks there should be!
Newsgroups: comp.robotics