Hello,
I am doing a simple parametric analysis from ADE L and sweeping on 4 values: L (20 points), Vd (10 points), Vb (10 points), and Vg (50 steps); this gives 100,000 simulations. I am interested in DC simulation only to gather information on (id, gm, gmb, vth, various junction capacitance, ... etc). I am expecting to get various plots of the mentioned parameters on the y-axis and Vg on the x-axis (since Vg is set as the last variable in parametric analysis). My settings are shown below:
My problem is: Cadence finished the 100k simulations in about a week for the schematics below and kept hanging on the last run for 3 days (I assume it was trying to finalize or save the results or something..), but then it crashed & I didn't get to see the results.
My questions:
1) Now I have 100k directories in the simulation directory with each run in a separate folder, but I don't know how to load them back in ADE and get the same plots if the simulation finished normally. I know how to load a single run in the results browser only by loading the psf directory, but I don't know how to do it in the parametric analysis multiple run. Is there an easy way to restore the results without running the simulations again? My final goal is to get plots similar to the image below (Not an exact result image but similar)
2) Normally after simulation finish, I plot the curves then select each bundle and export it to a .matlab file. Is there a way to do this automatically after simulation finishes? It takes a long time to group all curves as shown above and save it in a file separately; then repeat this for every device in my schematics.
3) I noticed that parametric analysis is very fast at the beginning of simulations; each DC simulation takes less than a second. Then after a day or two in simulating, a single run takes 10 seconds, and towards the end it takes up to 20-30 seconds to do a single run. I tried APS (High performance simulation), but it is even slower with the first runs, so I expect it will be worse towards then end. Is there any other way to run this kind of simulation in parallel or more efficiently?
I am using the following Cadence versions:
MMSIM Version: 13.1.1.660.isr18
Virtuoso Version: IC6.1.8-64b.500.1
irun Version: 14.10-s039
Spectre Version: 18.1.0.421.isr9
Many thanks in advance!
Kindest Regards,
Nader Sh.