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- Newsgroups: comp.lang.verilog
- Path: sparky!uunet!haven.umd.edu!decuac!pa.dec.com!engage.pko.dec.com!wrksys.enet.dec.com!mcintyre
- From: mcintyre@wrksys.enet.dec.com (My name is...)
- Subject: Re: 3rd Party Verilog Compilers
- Message-ID: <1992Nov20.013134.26388@engage.pko.dec.com>
- Sender: newsdaemon@engage.pko.dec.com (USENET News Daemon)
- Organization: Digital Equipment Corporation
- References: <49596@shamash.cdc.com> <1992Nov17.032709.7216@kpc.com>
- Distribution: usa
- Date: Fri, 20 Nov 1992 01:33:12 GMT
- Lines: 29
-
-
- In article <1992Nov17.032709.7216@kpc.com>, tla@kpc.com (Tom Anderson) writes...
- >In article <49596@shamash.cdc.com> bjdunlop@shamash.cdc.com (Bruce Dunlop) writes:
- >>A company called Chronologic Simulation was mentioned as having a fast
- >>verilog compiler, in a previous post here. Can someone give me their
- >>phone number? Also, does anyone have any good/bad experiences with it?
- >
- >A previous poster supplied the phone number, but I'll offer some comments.
- >Chronologic Simulation just went into production with their VCS (Verilog
- >Compiled Simulator) and KPCI was one of several companies that participated
- >in the Beta testing. Chronologic says that, with VCS, simulation execution
- >time is sped up over Verilog-XL by a factor of 10-20 for typical RTL
- >(synthesizable) models and up to 40 for pure behavioral models.
- >
- >We have tried several different simulations, all at the RTL level, and have
- >indeed seen 10-20x speedups over Verilog-XL. We are now running a model
- >with a 16x speedup, which pulls a nearly intolerable 12 hour simulation
- >down to well under an hour. This fundamentally changes the way we can
- >approach the design verification process. We have also seen VCS memory
- >usage as little as one-tenth that of Verilog-XL.
- >
- >VCS does not (yet) contains all the functionality of Verilog-XL, although
- >it took us only an hour or two to massage our model to work under VCS.
- >The main limitations are that it does not provide an interactive mode nor
- >all the PLI routines necessary to link to some third-party models. But
- >given the performance gains we have seen, we are highly motivated to find
- >workarounds to make VCS a part of design verification on future projects.
- >
- > Tom Anderson
-