RE: [SI-LIST] : Hspice: Windows vs Unix

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From: Offer Kaye (sofferk@techst02.technion.ac.il)
Date: Tue Apr 10 2001 - 22:40:34 PDT


Hmm..
Doug, I have a question also- how would you compare the data visualization
tools (e.g. waveform viewers) for Hspice in PC vs. Unix? I've used Hspice
on both platforms, and have found the Unix solutions to be much superior
to the PC solution- just try loading a 1.5GB results file to your
waveform viewer on a PC...

Offer Kaye
sofferk@techst02.technion.ac.il

On Tue, 10 Apr 2001, Burns, Douglas wrote:

> Anthony,
>
> I work for Signal Integrity Software Inc (SiSoft) where we have been
> developing software to support our high-speed design methodology. This
> methodology encompasses both pre and post layout waveform and timing
> analysis for GHz+ signaling environments. We seamlessly support IBIS and
> SPICE models on both PC and UNIX based HSPICE. We use both compute
> environments and have launched long complicated simulations successfully
> on both platforms.
>
> PC Solution
> 1) Does not support queuing. Jobs must be submitted in a serial fashion.
>
> 2) PC_HSPICE lives on the PC. If you get a node-locked license, Only the
> person with the key can access HSPICE. You can get a floating license
> and install HSPICE on all user's PC's, but you are still limited to the
> number of jobs that can be launched simultaneously. Also you would need
> to do separate installs/updates/support on all machines. Third, you
> could install HSPICE on a PC server and give your users access to the
> server.
> 3)PC hardware is less expensive with similar performance to the UNIX
> platforms
>
> The Unix Solution
> 1) Supports queuing. Hundreds of jobs can be submitted easily
> 2) Multiple users can simultaneously log onto 1 machine and submit jobs
> 3) Easy scripting/data manipulation
> 4) New CMI models support (though not on all UNIX's)
>
> In practice, user access and data manipulation capabilities should be
> primary concerns. We believe that the UNIX platform presently provides
> the best access and flexibility.
>
> Doug Burns
> Principal Consultant
> Signal Integrity Software, Inc.
> www.SiSoft.com
> dburns@sisoft.com
>
> -----Original Message-----
> From: Mohan [mailto:mohan@sageindia.co.in]
> Sent: Tuesday, April 10, 2001 12:18 AM
> To: Anthony Davidson; si-list@silab.eng.sun.com
> Subject: Re: [SI-LIST] : Hspice: Windows vs Unix
>
>
> Hi
>
> It depends on your needs......If you need to run small circuits, it is
> okay
> to use the PC version. Otherwise, Unix is preferable anyday !! I have
> had
> many instances of PC-version crashing when running long and accurate
> simulations ( eg. PLL ). Version 2000.2 (?) has problems with the
> 'Update'
> feature in PC. I cannot track a waveform while simulation is running. (
> There could be some fixes for these ! ).
>
> As regards the links to 3rd party tools : the links help you to invoke
> Hspice simulator other than the default simulator. For example, if you
> are
> using Cadence's Analog artist, you would be able to use Hspice as a
> simulator instead of CDSpice or Spectre.. the link provides the license
> to
> do so. You could then analyse the results in the 3rd party's waveform
> viewer. Of course, you need to have Hspice binaries too....i am not
> aware of
> any Cadence or Mentor tools on PC. Mentor's NT support is probably close
> to
> what you would want on a PC.
>
> Mohan Kumar
>
>
>
> ----- Original Message -----
> From: "Anthony Davidson" <adavidson@lanterncom.com>
> To: <si-list@silab.eng.sun.com>
> Sent: Tuesday, April 10, 2001 1:55 AM
> Subject: [SI-LIST] : Hspice: Windows vs Unix
>
>
> > We are looking at Star-Hspice from Avanti! as a signal integrity
> analysis
> > tool to evaluate/analyze high speed interconnects. We have decided to
> > purchase some licenses but now we have to decide to buy a Windows
> version
> or
> > a Unix (Solaris, I believe) version.
> >
> > According to Avanti!, Windows Hspice is a subset of Unix Hspice. The
> > information I have is this:
> >
> > CMI is not supported on Windows. CMI is a development library allowing
> one
> > to create MOSFET models in C. This will prevent us from using any
> vendor's
> > MOSFET model that was generated with CMI, however, this may not be a
> problem
> > because most manufacturers use the BSIM3 model nowadays. Does anybody
> know
> > if BSIM3 models are better/worse than models generated with CMI? Will
> I be
> > limited in anyway by not having CMI?
> >
> > Avanti! says that some 3rd party output formats are only supported on
> Unix,
> > such as CadenceLink and MentorLink. Does anybody have any experiences
> they
> > can describe using such links? What do these links allow you to do?
> >
> > Finally, has anybody used Hspice on both Windows and Unix platforms?
> Would
> > you say that you prefer one platform over the other? Why?
> >
> > Any other comments would be greatly appreciated.
> >
> > Thanks in advance for your help!!
> >
> > Anthony Davidson
> >
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