The Designer's Guide Community Forum

The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl
Simulators >> Circuit Simulators >> Spectre output data dump/all calculations
https://designers-guide.org/forum/YaBB.pl?num=1447386830

Message started by JayOcad on Nov 12^th, 2015, 7:53pm

Title: Spectre output data dump/all calculations
Post by JayOcad on Nov 12^th, 2015, 7:53pm

I was wondering how I could access every calculation/datapoint that spectre calculates at every time step, or is that not possible? I tried looking through the simulation data folders in both "psf" and "netlist" which has "spectre.out" but that file doesn't have every calculation made by spectre. Tried googling and looking through manual and didn't find anything yet so thought I'd ask on here, thanks for the help/pointers!

Title: Re: Spectre output data dump/all calculations
Post by Geoffrey_Coram on Dec 2^nd, 2015, 1:37pm

I don't understand what you are trying to do. Does "every calculation" mean all the calculations in all the equations in every device model?

Title: Re: Spectre output data dump/all calculations
Post by JayOcad on Dec 2^nd, 2015, 2:10pm

Yeah, all calculation from all the equations in every device model, sorry for being vague or if this is naive question.

Title: Re: Spectre output data dump/all calculations
Post by Geoffrey_Coram on Jan 14^th, 2016, 5:07am

I can't imagine any simulator giving you all that information, because it would make the simulation run very slowly: after every calculation, it would have to write to the file. (The BSIM models, and perhaps most models that came from Spice originally, reuse temporary variables T0, T1, ... so you can't write the values all at once.)

If you had Verilog-A code for all the models, you could go through and add $debug statements after every calculation. This would be tedious, and you would get a lot of information that you probably wouldn't want. I know when I'm trying to debug a calculation, I put in a couple print statements at a time, and then shift them to narrow down the problem.