Subject: RE: [IBIS-Users] Question about warning message
From: Angulo, John (john_angulo@mentorg.com)
Date: Mon Nov 18 2002 - 10:27:51 PST
The following is posted on behalf of Tom Dagostino at Teraspeed Consulting Group. Please send any private replies to tom@teraspeed.com only.
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I'll disagree on this. The extreme currents are likely OK but the
non-monotonic warnings may cause the simulations to not converge properly or
in some simulators cause the model not to load at all. If the sum of the IV
curves do not have monotonic issues you are OK. If the sum of the curves do
have monotonic issues I would investigate before I would say it is OK.
Tom Dagostino
Device Modeling Division
Teraspeed Consulting Group LLC
2926 SE Yamhill St.
Portland, OR 97214
(503) 430-1065
-----Original Message-----
From: owner-ibis-users@server.eda.org
[mailto:owner-ibis-users@server.eda.org]On Behalf Of Abdulrahman A. Rafiq
Sent: Friday, November 15, 2002 11:32 PM
To: Eric Hsu; ibis-users@server.eda.org
Subject: Re: [IBIS-Users] Question about warning message
Eric,
The warning message of "non-monotonic" is perfectly acceptable and can be
ignored. As for the warning message of extrreme currents present, it also is
acceptable. In fact if you open the .ibs file and comment our all the
extreme +ve and -ve currents in the I-V tables and then rerun ibischks, this
warning message will not show up.
In short you needn't worry too much about these warnings.
Hope this helps.
Regards,
Abdulrahman Rafiq
Eric Hsu <ehsu@netlogicmicro.com> wrote:
Hi All,
When running ibischk3 to check ver2.1 model, if there are warning
messages complaining about "non-monotonic"and "extreme currents present"
around hundred amp level, is it possible and acceptible?
Thanks
~eric
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************************************
ABDULRAHMAN AK RAFIQ
Scientific Engineering Consultants, Inc
Phone: (805) 708-1976
Email: arafiqsi@yahoo.com
URL: www.geocities.com/arafiqsi/
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<META content=3D"MSHTML 5.50.4916.2300" name=3DGENERATOR></HEAD> <BODY> <DIV><SPAN class=3D434591623-16112002><FONT face=3DArial color=3D#0000ff = size=3D2>I'll=20 disagree on this. The extreme currents are likely OK but the = non-monotonic=20 warnings may cause the simulations to not converge properly or in some=20 simulators cause the model not to load at all. If the sum of the = IV curves=20 do not have monotonic issues you are OK. If the sum of the curves = do have=20 monotonic issues I would investigate before I would say it is OK. =20 </FONT></SPAN></DIV> <DIV> </DIV> <DIV class=3DSection1> <P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Tom Dagostino</SPAN></P> <P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Device Modeling = Division</SPAN></P> <P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Teraspeed Consulting Group =
LLC</SPAN></P> <P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">2926 SE Yamhill = St.</SPAN></P> <P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Portland, OR = 97214</SPAN></P> <P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">(503) 430-1065</SPAN></P> <P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: = Arial">tom@teraspeed.com</SPAN></P> <P style=3D"MARGIN: 0in 0in 0pt"><SPAN=20 style=3D"FONT-SIZE: 10pt; FONT-FAMILY: = Arial">http://www.teraspeed.com></P></DIV> <BLOCKQUOTE> <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT = face=3DTahoma=20 size=3D2>-----Original Message-----<BR><B>From:</B>=20 owner-ibis-users@server.eda.org = [mailto:owner-ibis-users@server.eda.org]<B>On=20 Behalf Of </B>Abdulrahman A. Rafiq<BR><B>Sent:</B> Friday, November = 15, 2002=20 11:32 PM<BR><B>To:</B> Eric Hsu; = ibis-users@server.eda.org<BR><B>Subject:</B>=20 Re: [IBIS-Users] Question about warning message<BR><BR></FONT></DIV> <P>Eric,=20 <P>The warning message of "non-monotonic" is perfectly acceptable and = can be=20 ignored. As for the warning message of extrreme currents present, it = also is=20 acceptable. In fact if you open the .ibs file and comment our all the = extreme=20 +ve and -ve currents in the I-V tables and then rerun ibischks, this = warning=20 message will not show up.=20 <P>In short you needn't worry too much about these warnings.=20 <P>Hope this helps.=20 <P>Regards,=20 <P>Abdulrahman Rafiq=20 <P> <B><I>Eric Hsu <ehsu@netlogicmicro.com></I></B> wrote:=20 <BLOCKQUOTE=20 style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px = solid">Hi=20 All,<BR><BR>When running ibischk3 to check ver2.1 model, if there = are=20 warning<BR>messages complaining about "non-monotonic"and "extreme = currents=20 present"<BR>around hundred amp level, is it possible and=20 = acceptible?<BR><BR>Thanks<BR><BR>~eric<BR><BR>|--------------------------= ----------------------------------------<BR>|For=20 help or to subscribe/unsubscribe, email majordomo@eda.org<BR>|with = just the=20 appropriate command message(s) in the body:<BR>|<BR>| help<BR>| = subscribe=20 ibis <OPTIONAL e-mail address, if different><BR>| subscribe = ibis-users=20 <OPTIONAL e-mail address, if different><BR>| unsubscribe ibis = <OPTIONAL=20 e-mail address, if different><BR>| unsubscribe ibis-users <OPTIONAL = e-mail=20 address, if different><BR>|<BR>|or email a written request to=20 ibis-request@eda.org.<BR>|<BR>|IBIS reflector archives exist=20 under:<BR>|<BR>| http://www.eda.org/pub/ibis/email_archive/ = Recent<BR>|=20 http://www.! eda.org/pub/ibis/users_archive/ Recent<BR>|=20 http://www.eda.org/pub/ibis/email/ E-mail since=20 = 1993</BLOCKQUOTE><BR><BR>************************************<BR>ABDULRAH= MAN=20 AK RAFIQ<BR>Scientific Engineering Consultants, Inc<BR>Phone: (805)=20 708-1976<BR>Email: arafiqsi@yahoo.com <BR>URL: = www.geocities.com/arafiqsi/=20 <BR>************************************ <P><BR> <HR SIZE=3D1> Do you Yahoo!?<BR><A=20 = href=3D"http://rd.yahoo.com/hosting/mailsig/*http://webhosting.yahoo.com"= >Yahoo!=20 Web Hosting</A> - Let the expert host your = site</BLOCKQUOTE></BODY></HTML>
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