Subject: [IBIS-Users] Re: Ibis generation problem
From: Wil Ngan (wngan@idt.com)
Date: Mon Apr 14 2003 - 18:05:16 PDT
Thanks for your reply Lynne.
As I mentioned earlier, I have already looked at ALL the *out file
(these files are equivalent to *.lis in hspice, lists the entire netlist,
all model info, output data), and I do not see any SPICE non-
convergence issues, or any other problems whatsoever.
In addition, my diskspace are not full, max file size limit isn't
the issue, and there are no network problems.
Additionally, I have taken each *spi file (these are hspice input files
generated by s2ibis) and ran them in separate directories,
and those ran fine, too, generating *lis files that match
the *out files.
It looks like I would have to resort to parsing each *lis file
out and manually create the *.ibs file, though I don't prefer
this since it would be a very tedious and error prone process!
- Wil
Lynne Green wrote:
> Hello, Wil,
>
> Many possible causes: SPICE convergence problem, full disk, maximum file
> size limit reached, network or system hang/crash.
>
> Best way to debug this is to look at the *.lis file for error/warning
> messages. (If s2ibis2 deleted these files, you might need to disable
> that option.)
>
> Good luck.
>
> - Lynne
>
> Dr. Lynne Green
> Senior Member of Consulting Staff
> Cadence Design Systems, Inc.
>
> -----Original Message-----
> From: Wil Ngan [mailto:wngan@idt.com]
> Sent: Monday, April 14, 2003 4:50 PM
> Cc: ibis@eda.org; ibis-users@eda.org; ibis-info@eda.org
> Subject: Ibis generation problem
>
> Hi,
> I'm having problem generating an ibis file, and was wondering
> if I can get ideas in how to approach this.
> 1) The problem:
> I get the following error when running spice to ibis:
> % s2ibis2.11 gold_7xxx.s2i
> s2ibis2.11_real v1.1 -- North Carolina State University
> s2ibis2.11_real: Reading input file gold_7xxx..done
> s2ibis2.11_real: Analyzing component idt7xxx .
> s2ibis2.11_real: Starting HSpice job with input put7.spi.
> :
> etc
> :
> s2ibis2.11_real: Starting HSpice job with input y017.spi.
> s2ibis2.11_real: Starting HSpice job with input z017.spi.
> s2ibis2.11_real: Opening file gold_7xxx.ibs for writing...Bus error
> -----
> 2) My attempt at solving this:
> And so I examine the gold_7xxx .ibs file, and I see the following:
> :
> etc
> :
> [Pulldown]
> | voltage I(typ) I(min) I(max)
> |
> -3.30 -9.001A -9.160A -8.914A
> -3.10 -8.255A -8.415A -8.168A
> :
> etc
> :
> 3.50 0.178A 0.117A 0.241A
> 3.60 0.179A 0.117A 0.242A
> 3.70 0.179A
> (The ibis file ends here, which is far from being complete.)
> I have examined all the *out files (especially the pdt.out, pdx.out,
> pdn.out files)
> in detail and see that all hspice data has been generated and dumped
> into the
> *out files with no problem whatsoever. And yet s2ibis is apparently
> having
> problem extracting the data from the *out files to place in the *ibs
> file.
> Any idea how to approach or solve this problem?
> Has anyone ever encountered this?
> Any help or hints would be appreciated. Thanks so much,
> - Wil
> IDT sram design
> (408) 330-1623
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