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From: ratazzie@lonex.radc.af.mil (Edward P. Ratazzi)
Newsgroups: comp.lsi,comp.lsi.cad
Subject: Explaination of SPICE3C1 Messages Needed
Keywords: spice, errors
Message-ID: <1991Mar11.215449.8066@lonex.radc.af.mil>
Date: 11 Mar 91 21:54:49 GMT
Sender: ratazzie@lonex.radc.af.mil (Edward P. Ratazzi)
Organization: Rome Laboratory (USAF)
Lines: 22

I came across the following messages while attempting a simulation using
SPICE3C1 on our Sun 3/470.  Note that the same simulation runs fine using
SPICE2G6.  My question is:  does anybody have any idea why this is happening,
and what would be a typical fix for this type of problem (i.e. do I tweak
certain analysis options?)?

SPICE3 3 -> run
Warning: resuming run in progress.
Warning: Gmin step failed
Warning: Gmin stepping failed
Warning: source stepping failed
doAnalyses: Improperly formed matrix - shouldn't happen!(preOrd)

simulation interrupted
SPICE3 4 ->

Many thanks.
-- 
E. Paul Ratazzi                                |      ratazzie@lonex.radc.af.mil
Microelectronics Reliability Division          |            COMPMAIL:  e.ratazzi
Rome Laboratory                                |                  (315) 330-2946
"Exploring the Invisible Frontier"             |                    DSN 587-2946