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Monte Carlo simulations not proceedings for the last few jobs/points

Hello All,

I have been observing my MC simulation which starts of completely fine with multiple jobs running in parallel but towards the end when only a few jobs are left it seems to get stagnated and not moving forward for hours and the number of running jobs reduces to one.

The schematic simulates completes fast and fine but not the extracted view which halts as indicated in the below screenshot. Suspending and resuming the job doesn't help.

In some posts I see suggestion to use LSCS. In my case I am using the LBS job setup mode in IC618 ISR31. I don't see any specific option to select LSCS Vs ICRP.

Any suggestions/tips will be very helpful.

thanks

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DomiHammerfall over 1 year ago

That the number of running jobs reduces towards the end of a Monte Carlo simulation is normal. The reason is that each worker receives a chunk of grouped Monte Carlo Points, which do not necessarily complete at the same time. You can find an explanation here: https://community.cadence.com/cadence_technology_forums/f/custom-ic-design/55472/virtuoso---jobs

The distribution method can be find in the Job Policy Setup.
In ADE Assembler: Options -> Job Setup...
In ADE Explorer: Setup -> Job Setup...

Finally, what does the simulation log say about the last few runs? If you go to the Detail view in your result tab, you can rightclick on the runs that have not completed yet and select View Log Messages -> Simulator Log. There, you should be able to see if it is still running or not.
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sidm over 1 year ago in reply to DomiHammerfall

thanks for the reply. In the Job Policy Setup I see the below which doesn't seem to give an option to switch between LSCS Vs ICRP. Any suggestions on that ?
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sidm over 1 year ago in reply to sidm

As suggested I also checked the log file of the stagnant job which throws Memory report messages stating Maximum memory size.

regards
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sidm over 1 year ago in reply to sidm

As suggested I also checked the log file of the stagnant job which throws Memory report messages stating Maximum memory size.

regards
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