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Simulators >> Circuit Simulators >> how to reduce the waveform size (sst2) in spectre/aps
https://designers-guide.org/forum/YaBB.pl?num=1271197625

Message started by zeronet on Apr 13^th, 2010, 3:27pm

Title: how to reduce the waveform size (sst2) in spectre/aps
Post by zeronet on Apr 13^th, 2010, 3:27pm

I am using cadence mmsim 7.2 to run my simulations. For the same netlist and save options (save all nodes), I tried ultrasim first and got the +400MB sst2 waveform file. Then I tried aps, the sst2 file became +70GB. Is there any way that I can reduce the file size? I know that in ultrasim you have the options such as wf_filter, wf_tres to control the size of waveform file, is there a similar way that I can do it in aps/spectre ? Thanks a lot.

Title: Re: how to reduce the waveform size (sst2) in spectre/aps
Post by Andrew Beckett on Apr 13^th, 2010, 4:31pm

Set the compression option on the transient analysis. See "spectre -h tran" and look for compression. Make sure you're using a recent version (e.g. MMSIM72) as there are some new extensions to compression options, and support in SST2.

Regards,

Andrew.

Title: Re: how to reduce the waveform size (sst2) in spectre/aps
Post by zeronet on Apr 13^th, 2010, 4:58pm

Thanks, Andrew. I found it in the manual.

Title: Re: how to reduce the waveform size (sst2) in spectre/aps
Post by ywguo on Apr 16^th, 2010, 5:39am

Hi zeronet,

Don't save all nodes. That's a bad practice if you simulate a large circuitry or run a very long time transient simulation.

Yawei