simulation@uflorida.cis.ufl.edu (Moderator: Paul Fishwick) (07/02/89)
Volume: 9, Issue: 8, Sat Jul 1 13:23:43 EDT 1989 +----------------+ | TODAY'S TOPICS | +----------------+ (1) Event Unscheduling (2) Can you Send P. Net? (3) Shock Wave Simulation (4) QSIM Simulation Toolkit now Available * 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. * Simulation Tools available by doing above and changing the directory to pub/simdigest/tools. ----------------------------------------------------------------------------- Posted-Date: Thu, 29 Jun 89 17:58:48 CDT Date: Thu, 29 Jun 89 17:58:48 CDT From: steve@titan.tsd.arlut.utexas.edu (Steve Glicker) To: simulation@bikini.cis.ufl.edu Subject: "Unscheduling" This is in reply to Sanjai Narain's comments on the separation of "scheduling and unscheduling" from the "main model" in DES. There seems to have been a questionable assumption made about "unscheduling" *always* existing within the "main model" of a classical, event scheduling DES. In some of the simulators I have worked on (e.g., TEGAS 5, TEXSIM/B) "unscheduling" was separated from the "main model" because it was efficient (in these cases all models had similar characteristics) and it simplified model development. Currently, I am developing a real-time DES for distributed systems modeling and, interestingly enough, it seems to make sense to isolate "unscheduling" from the "main model". I suspect that in general purpose, event scheduling DES languages "unscheduling" is left entirely to the "user" because it must be handled within a problem specific context. In this case, though, I don't see why one would assume that the "user" would not isolate "unscheduling" operations from the "main model". I would be interested in hearing comments, on this topic, from advocates of process-oriented DES. Steve Glicker Applied Research Labs Univ. TX. at Austin (steve@mars.tsd.arlut.utexas.edu) ------------------------------ Via: UK.AC.CITY.CS; 30 JUN 89 16:51:29 BST From: M. Nejad-Sattary <mohammad%CS.CITY.AC.UK@NERVM.NERDC.UFL.EDU> Date: Fri, 30 Jun 89 16:52:54 +0100 To: fishwick@bikini.cis.ufl.edu Subject: Petri Net Simulator I've been told that there was a petri net simulator posted to the comp.simulation news group. Unfortunately I missed it. Could someone email a copy to me or post another copy to the news group. My email address on the UK Janet network is mohammad@uk.ac.city.cs. Thanks in advance. ------------------------------ Date: Fri, 30 Jun 89 21:58:56 CDT To: simulation@bikini.cis.ufl.edu From: elwin@oddjob.uchicago.edu (Shin "AstroBoy" Kurokawa) Subject: Re: SIMULATION DIGEST V9 N5 Newsgroups: comp.simulation In-Reply-To: <20477@uflorida.cis.ufl.EDU> Organization: University of Chicago, Department of Astronomy & Astrophysics Cc: Hello! I just started reading this newgroup and noticed your "digest". I was wondering if anyone in this group is doing simulations of shock waves, especially of what follows after an intense explosion. I know that some people in the past have done a lot about the nuclear-bomb simulations and so forth, but I'm interested in finding out whether the members of this newsgroup might be doing them right now. My simulation is used towards the Big Bang nucleosynthesis theory development. Shin Kurokawa, a.k.a. AstroBoy ------> elwin@oddjob.uchicago.edu ------------------------------ Date: Sat, 1 Jul 89 13:15:55 -0400 From: Paul Fishwick <fishwick@fish.cis.ufl.edu> To: simulation@ufl.edu Subject: QSIM I have downloaded the QSIM C Toolkit from Byte's ByteNet. I have not tried compiling the code -- it seems to conform to ANSI C (this may make it slightly incompatible with your C compiler). Please send comments to the digest -- especially if you convert the source to the more common (at least at the present time) C code. The code and documentation are located in the /tools directory so you can FTP them. See directions at the beginning of the digest. -paul +------------------------------------------------------------------------+ | Prof. Paul A. Fishwick.... INTERNET: fishwick@bikini.cis.ufl.edu | | Dept. of Computer Science. UUCP: gatech!uflorida!fishwick | | Univ. of Florida.......... PHONE: (904)-335-8036 | | Bldg. CSE, Room 301....... FAX is available | | Gainesville, FL 32611..... | +------------------------------------------------------------------------+ ------------------------------ END OF SIMULATION DIGEST ************************