ngspice / Bugs / #225 Failed simulation when using "source" multiple times

#225 Failed simulation when using "source" multiple times

Status: closed-fixed

Owner: Dietmar Warning

Labels: frontend (66)

Priority: 5

Updated: 2012-12-20

Created: 2012-12-15

Creator: Henrik Forstén

Private: No

When more than one simulations are ran without restarting ngspice, sometimes the later simulations fail to converge or return different results than when run alone.

Steps to repdroduce:

- Go to ngspice root directory and start ngspice.
- Type "source examples/TransmissionLines/cpl1_4_line.sp".
- Without restarting type: "source examples/TransmissionLines/cpl2_2_line.sp".
- Second simulation fails (doAnalyses: iteration limit reached), but it works correctly when run alone.

I have traced this bug to line 165 in frontend/spiceif.c. Uncommenting the "INPkillMods()" line fixes the bug.

This bug was introduced in commit 99b167b272027aabe4cbee573e4b7a87de63f69d "correct alter of mos geometries for binned models".

Discussion

Dietmar Warning - 2012-12-15

Thanks Henrik for the report and the proposed fix.
We must look for a way to differentiate on this place between "alter" and "source".

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Dietmar Warning - 2012-12-20

Reactivate and move the modtab delete after the eventloop should now allow further re-source and alter of binned mos models.

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Dietmar Warning - 2012-12-20

assigned_to: nobody --> dwarning

status: open --> closed-fixed
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Failed simulation when using "source" multiple times

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#225 Failed simulation when using "source" multiple times

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