When Schedules and Time to Market are important, you can justify the cost even if the tool is used only a few months a year. When the work load is high and constant, the ease of use argument gets weaker as you can better benefit from re-use and scripting and the (re-)learning curve goes away. Aubrey Sparkman Enterprise Engineering Signal Integrity Team Dell, Inc. Aubrey_Sparkman@xxxxxxxx (512) 723-3592 "Discovery consists of seeing what everybody has seen and thinking what nobody else has thought." - Jonathan Swift ________________________________ From: Julia Nekrylova [mailto:fialka113@xxxxxxxxx] Sent: Thursday, November 01, 2007 12:35 PM To: Sparkman, Aubrey; scott@xxxxxxxxxxxxx; weirsi@xxxxxxxxxx Cc: si-list@xxxxxxxxxxxxx Subject: Re: [SI-LIST] Re: Hspice vs. Eldo 2) Depends on how constant your work load is. If it is high and constant, then yes, I would agree with you that 50 % more cost is easily justifiable. Btw, Hspice costs 100 % more. ----- Original Message ---- From: "Aubrey_Sparkman@xxxxxxxx" <Aubrey_Sparkman@xxxxxxxx> To: scott@xxxxxxxxxxxxx; weirsi@xxxxxxxxxx Cc: fialka113@xxxxxxxxx; si-list@xxxxxxxxxxxxx Sent: Thursday, November 1, 2007 8:14:00 PM Subject: [SI-LIST] Re: Hspice vs. Eldo In addition to Steve and Scott's comments, I would like to add two more comments: 1) OFTEN, model accuracy is much more important than which simulator you use. 2) If you have a choice of simulators, (you don't with encrypted models) how important is ease of use? For instance, if one simulator costs 50% more, but enables you to get 3 times as much done, do you care? Aubrey Sparkman=20 Enterprise Engineering Signal Integrity Team=20 Dell, Inc.=20 Aubrey_Sparkman@xxxxxxxx=20 (512) 723-3592=20 "Discovery consists of seeing what everybody has seen and thinking what nobody else has thought." - Jonathan Swift -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of Scott McMorrow Sent: Thursday, November 01, 2007 11:32 AM To: weirsi@xxxxxxxxxx Cc: fialka113@xxxxxxxxx; si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: Hspice vs. Eldo I'd agree with Steve. Usually encrypted models is the deal breaker. Otherwise, Eldo is technically superior to HSPICE in the handling of s-parameters. Scott McMorrow Teraspeed Consulting Group LLC 121 North River Drive Narragansett, RI 02882 (401) 284-1827 Business (401) 284-1840 Fax http://www.teraspeed.com <http://www.teraspeed.com/> Teraspeed(r) is the registered service mark of Teraspeed Consulting Group LLC steve weir wrote: > Julia, Synopsys has two almost unassailable market advantages with HSPICE: > > *A lot of models are supplied only as encrypted HSPICE models. If you > don't have HSPICE you can't play. > *HSPICE is used for silicon sign-off with a number of fabs. > > If either of the above issues are material to you, then the technical=20 > merits of one simulator versus another are moot. > > Steve > > Julia Nekrylova wrote: > =20 >> Dear SI professionals, >> My question is about Eldo vs. Hspice comparisson. With the former being roughly 2 times cheaper than the later, I wonder if it offers a similar performance. I've heard that Eldo has an improved t-line modeling and handles S-parameters in a more advanced fashion. I just never had a chance to work with Eldo, but pricewise it's a big difference for a small company like ours. >> >> Thanks again for your help, >> Julia Nekrylova >> >> 74ze Engineering >> >> __________________________________________________ >> Do You Yahoo!? >> Tired of spam? Yahoo! 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Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu