[comp.simulation] SIMULATION DIGEST V7 N8

simulation@uflorida.cis.ufl.edu (Moderator: Paul Fishwick) (02/15/89)

Volume: 7, Issue: 8, Tue Feb 14 16:33:43 EST 1989

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| TODAY'S TOPICS |
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(1) Multi-Processor and Network Simulation
(2) Multi-Processor Simulation
(3) Random Number Generation Validation

* Moderator: Paul Fishwick, Univ. of Florida
* Send topical mail to: simulation@uflorida.cis.ufl.edu
* Archives available via FTP to bikini.cis.ufl.edu, login as
  'anonymous', use your last name as the password, change
  directory to pub/simdigest.



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Fri, 10 Feb 89 10:49:51 EST
Date:          Fri, 10 Feb 89 10:49 EDT
From: <ASELMA01%ULKYVX.BITNET%CUNYVM.CUNY.EDU@NERVM.NERDC.UFL.EDU> (Adel S. Elmaghraby)
Organization:  University of Louisville
Subject:       Re: SIMULATION DIGEST V7 N7
To: SIMULATION@UFLORIDA.CIS.UFL.EDU
X-Original-To: SIMULATION@UFLORIDA.CIS.UFL.EDU


In Reply to:
 (1) Multi-Processing Computer System Modeling
 (2) Architecture Modelling

I know that NETWORK II.5 by CACI has very good potential for these simulation.
I have used it both on PC and Vax. Furthermore an accompanying book by:
Chueng, Dimitriadis, and Karplus titled " Introduction to Simulation Using
Network II.5" has several detailed examples such as a multiprocessor computer,
an a time shared computer system in addition to other computer network
examples.
  The software basically thinks in terms of Processing Elements with user
defined instructions, storage devices, and obviously Data Transfer devices.
It allows you to set an elaborate definition of software and system
characteristics. Network is written in Simscript and has some simple animation
capabilities on the PC version.
                                Adel S. Elmaghraby
                                University of Louisville
                                EMACS Dept.



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Date: Fri, 10 Feb 89 16:21:57 -0500
From: Paul Fishwick <fishwick@fish.cis.ufl.edu>
To: simulation@ufl.edu
Subject: Multi-Processor Simulation


Concerning the request about multi-processor simulation tools, you
can pick from a large variety of available tools. The major simulation
languages such as SIMSCRIPT, SLAM II and GPSS can be used for
architecture simulation. If you want to work in C, you might consider
CSIM (from Herb Schwetman at MCC) or SMPL (from M. H. MacDougall):
he has a recent MIT Press book on Simulating Computer Systems. Both
of these two languages lean toward the simulation of computer systems
specifically and they both come complete with C source code. CSIM
is process oriented and SMPL is event oriented.

As far as languages that are tied specifically toward computer network
simulation, you can check out Columbia's network testbed simulation
system (called NEST). NEST was discussed in an earlier digest issue.

-paul

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| Prof. Paul A. Fishwick.... INTERNET: fishwick@bikini.cis.ufl.edu       |
| Dept. of Computer Science. UUCP: gatech!uflorida!fishwick              |
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Date: Tue, 14 Feb 89 12:54:25 EST
From: Dik Lee <dlee@cis.ohio-state.edu>
To: simulation@bikini.cis.ufl.edu
Subject: Methods for checking uniform distribution?


In our research project, we have to check whether a set of numbers
are uniformly distributed within a certain range. For instance, if we
have n m-bit numbers, how do I tell if the n numbers are uniformly
distributed (or very close to) in the range of 0 to 2**(m-1)?

I saw a short article in IEEE Spectrum (Aug. 1988 issue, p. 13)
mentioning some software developed by Clifford A. Pickover at IBM
that can plot a graph showing the randomness of Gaussian noise.
Does anyone have any further information about it? Any pointer to any
literature or existing software/algorithms?

- Dik Lee
Dept. Computer and Information Science	dlee@tut.cis.ohio-state.edu
The Ohio State University		..!osu-cis!cis.ohio-state.edu!dlee
Columbus, OHIO 43210-1277		614-292-2568



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