schehrazi
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University of CA, LA
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Hi,
Has anybody faced convergence issues in transient simulation when a vpwlf source is present in the circuit?
In my case, the simulation goes smoothly with sinusoidal sources but once an arbitrary signal is used, if the output format is SST2, I get "SST2 Error: Invalid control value" and the simulation terminates.
I changed the output format to psf using
envSetVal("spectre.envOpts" "simOutputFormat" 'string "psfbin")
This time the simulation does not terminate but I get a lot of "zero diagonal found in jacobian" warnings and eventually, the simulation terminates before it is finished.
Any hit to fix this? I am using icfb 5141.
Thanks in advance.
* schehrazi
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