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  3. PAC simulation issue, "No valid time points are specified...

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PAC simulation issue, "No valid time points are specified"

FV031
FV031 over 1 year ago

Having Issues running PAC. It ran in the first iteration and then when I changed some input parameters It started to fail.

I checked the PSS waveform and it does cross the threshold.

Command line:
/home/tools/cadence/SPECTRE211.460/tools/bin/spectre -64 input.scs +escchars +log ../psf/spectre.out -format fsdb -raw ../psf +preset=mx +mt=4 +lqtimeout 900 -maxw 5 -maxn 5 +lorder \
MMSIM:PRODUCT -env ade -ahdllibdir /*/maestro/results/maestro/Interactive.7/sharedData/Job149/ahdl/input.ahdlSimDB +logstatus

"Error found by spectre during PAC analysis `pac'.
ERROR (SPCRTRF-15168): No valid time points are specified for the sampled analysis `pac'. The analysis is skipped.
To fix the problem, please verify that: 1) Threshold value is within the range of probed signal. 2) Additional timepoints are specified less than the fundamental period.

Analysis `pac' was terminated prematurely due to an error."

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  • FV031
    FV031 over 1 year ago

    From the netlist:

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  • FV031
    FV031 over 1 year ago

    It runs with Spectre and with SpectreX it seems to be hit or miss!

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  • Andrew Beckett
    Andrew Beckett over 1 year ago in reply to FV031

    Please contact customer support (submit a case after logging in). It's pretty likely to be some specific circuit-dependent issue. I can't think of a general reason why this would fail (sometimes) with Spectre X.

    Andrew

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