simulation@uflorida.cis.ufl.edu (Moderator: Paul Fishwick) (06/01/88)
Volume: 2, Issue: 10, Wed Jun 1 09:18:17 EDT 1988 +----------------+ | TODAY'S TOPICS | +----------------+ (1) Data Bases for Simulation (2) X Client for NEST Simulation Language (3) LANSF: Local Area Network Simulator Moderator: Paul Fishwick, Univ. of Florida Send topical mail to: simulation@uflorida.cis.ufl.edu ----------------------------------------------------------------------------- From: williams@srcsip.UUCP (Sue Williams) Newsgroups: comp.databases,comp.simulation Subject: Database for programming libraries and simulation results Date: 27 May 88 20:53:01 GMT Reply-To: williams@srcsip.UUCP () Organization: Honeywell Systems & Research Center, MPLS, MN This question is directed at experienced DBA's (don't know if I am posting to the right groups). I'm playing DBA on a project we are working on, we have a new copy of ORACLE. This seems like a fairly generic problem and I'm sure it must have been addressed by other people. We are writing a system to automate the program evaluation process. We do image processing applications where we run simulations of hundreds of images and the total amount of data gathered is very large. I would like to generically represent programs which consist of modules which have inputs and outputs of various types, etc, AND also, store actual data values of those inputs and outputs for lots of executions of the program. I can write an LDS for a particular program that relates specific program inputs/outputs (entities) to specific results (entities), but I would like to write a generic LDS that can represent multiple programs. My attempts so far are fairly ugly, is there an existing approach to this problem? Info and references appreciated, Sue Williams (ihnp4,philabs)!srcsip!williams ------------------------------ Date: Mon, 30 May 88 02:49:59 PDT From: andy%saturn.Berkeley.EDU@berkeley.edu (Andrew Purshottam) To: comp-simulation@uunet.UU.NET Subject: Request for X client for NEST system. Is the X client developed for NEST at Northrup available, and if so, is it ftp'able? Reply/Metoo's to andy@xcssun.berkeley.edu, and I shall summarize if there is interest. Thanks, Andrew ------------------------------ Date: Tue, 31 May 88 15:41:58 MDT From: alberta!pawel@bikini.cis.ufl.edu (Pawel Gburzynski) To: simulation@uflorida.cis.ufl.edu Subject: A system for modeling networks Cc: piotr@bikini.cis.ufl.edu Dear Sir: When the comp.simulation group was started there was a posting there asking for information on various simulation systems or packages that people are using. That article has been obsoleted and removed from our system and we don't remember the details. Anyhow, we would like to inform the simulation community that we currently have a configurable system written in C for simulating communication networks. The name of the system is LANSF and it can be obtained from us for free, together with a manual and a set of examples. LANSF was originally designed as an accurate simulator of MAC-level protocols for Local Area Networks. Its most important feature is a built-in model of a channel which reflects accurately all relevant phenomena that occur in a piece of wire. In particular, phenomena like signal propagation, collision of two or more signals, are automatically modeled. The system offers flexible tools for defining traffic patterns, collecting various statistics, and dynamic tracing of the network behavior via a window-oriented dynamic display facility. The operations of the modeled system are programmed in C in such a way that they look as a collection of interrupt-driven processes. LANSF was used to obtain a number of interesting performance results (some of them were published) for collision protocols applicable to bus-type networks. Moreover, it was successfully used in a graduate course on networks. With LANSF, Students were able to design protocols, implement them, and verify their behavior. In its present version, LANSF is a general-purpose simulation system - well suited for investigating communication phenomena in distributed systems. Currently LANSF is being used for modeling a distributed database. We will be happy to answer any questions. We can also send the (rather lengthy) manual to everybody who expresses interest in our system. Pawel Gburzynski and Piotr Rudnicki The University of ALberta Department of Computing Science Edmonton, Alberta, Canada T6G 2H1 +--------------------------+ | END OF SIMULATION DIGEST | +--------------------------+