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Simulators >> Circuit Simulators >> Monte-Carlo Simulations in UMC180...?
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Message started by Ramakrishna RSSM on May 20^th, 2017, 3:35am

Title: Monte-Carlo Simulations in UMC180...?
Post by Ramakrishna RSSM on May 20^th, 2017, 3:35am

Hi all,

How to rum Monte-Carlo Simulations in Cadence Virtuoso Analog Design Environment...? I'm using UMC180 Technology on IC616. The model files are been loaded to ADE automatically because of *.il file at schmatic level. I'm able to locate Monte Carlo model fles @ /Models/Spectre/Monte_Carlo. Since in my design I'm using only NMOS & PMOS, I've to use only

mm180_reg18_v124_mc.lib.scs
mm180_reg18_v124_mc.mdl.scs
mm180_reg18_v124_mc_corner.lib.scs
mm180_reg18_v124_mc_statistical_m.mdl.scs
mm180_reg18_v124_mc_statistical_p.mdl.scs.

Kindly let me know how to run MC @ ADE-XL..?

Am i need to modify anythind in the above said files since it saying..

ERROR (ADEXL-5052): Monte Carlo run stopped because no statistical data generated for the test

Follow the attachments for my concern......

Thanks in advance.......

Title: Re: Monte-Carlo Simulations in UMC180...?
Post by Geoffrey_Coram on May 22^nd, 2017, 8:11am

"Nominal simulation may have failed."

Can you run the nominal simulation?

Can you run a single MC trial and view the simulator log file?

Title: Re: Monte-Carlo Simulations in UMC180...?
Post by Ramakrishna RSSM on May 22^nd, 2017, 10:51pm

Thanks a lot for your reply Geoffrey_Coram.

The issue has been resolved....

Add "* parameters sigma = 3* " in
MM180_REG18_V124_MC_STATISTICAL_P.mdl.scs
file.

Title: Re: Monte-Carlo Simulations in UMC180...?
Post by AnilReddy on May 24^th, 2017, 5:38am

And, what does that mean?
and, why only add to PMOS.scs file?

Title: Re: Monte-Carlo Simulations in UMC180...?
Post by Ramakrishna RSSM on May 24^th, 2017, 7:34am

Thanks a lot for you Question AnilReddy.

To the best of my knowledge...
Where
p---> Process
m--->mismatch

Contributions....