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- Newsgroups: comp.lang.verilog
- Path: sparky!uunet!ukma!wupost!darwin.sura.net!sgiblab!news.kpc.com!kpc!tla
- From: tla@kpc.com (Tom Anderson)
- Subject: Re: 3rd Party Verilog Compilers
- Message-ID: <1992Nov17.032709.7216@kpc.com>
- Summary: Chronologic comments
- Keywords: verilog
- Sender: Tom Anderson (tla@kpc.com)
- Organization: Kubota Pacific Computer Inc, Santa Clara, CA
- References: <49596@shamash.cdc.com>
- Distribution: usa
- Date: Tue, 17 Nov 1992 03:27:09 GMT
- Lines: 27
-
- 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
-