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Spectre: How to get rid of spectre.ic and spectre.fc?

dontpanic

Hi! I am running batch simulations over a large extracted design, so I need to trim down the size of the results directories to the bare minimum. The spectre.ic and spectre.fc occupy almost 50MB each, so I want to avoid generating them, but I haven't been able to figure out how...

-In my transient sim setup, tab "State file" I removed the text "spectre.ic"  and "spectre.fc" in the fields "write" and "writefinal", respectively, but the simulator seems to ignore this.

-In the "enviroment" options I have checked "Save state (ss)" and "Recover (rec)" to "n", but this also doesn't seem to have any effect.

Any ideas on how to achieve this? I'm using spectre version 15.1.0.679.isr14 64bit.

Thanks and regards,

Jorge.

P.S. I also noticed that even though I made sure to have no outputs selected for saving/plotting, and my "save all" setup is as in shown below, a "tran.tran.tran.dat" is still generated in the results directory. When I check its contents with the Results Browser tool, I see that one voltage node of my circuit is still being saved. Is this a bug, or spectre must by all means save at least one circuit node?

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  • Andrew Beckett

    Jorge,

    I don't understand. There would only be one netlist directory for each test, regardless of how many points you ran in the verification. So why would it be gigabytes of data? You already turned off the simulation output (not sure how you're actually getting any output from the simulator - presumably you have to output something somewhere otherwise there's no point in running the simulation). If  you want to cut it down altogether, you can check the "Save Simulation Data" too which will delete the contents of the psf dir and then not save a shared netlist either. This doesn't  delete any measurement outputs which have resulted in a scalar value in the ADE XL outputs table, but those would have been dependent on having some psf results before the data got deleted (which doesn't match with your intent to use save=nooutput earlier).

    Trying to write post-simulation triggers shouldn't be necessary here - mainly because I just don't understand why the built-in capability doesn't do what you want.

    Regards,

    Andrew.

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  • Andrew Beckett

    Jorge,

    I don't understand. There would only be one netlist directory for each test, regardless of how many points you ran in the verification. So why would it be gigabytes of data? You already turned off the simulation output (not sure how you're actually getting any output from the simulator - presumably you have to output something somewhere otherwise there's no point in running the simulation). If  you want to cut it down altogether, you can check the "Save Simulation Data" too which will delete the contents of the psf dir and then not save a shared netlist either. This doesn't  delete any measurement outputs which have resulted in a scalar value in the ADE XL outputs table, but those would have been dependent on having some psf results before the data got deleted (which doesn't match with your intent to use save=nooutput earlier).

    Trying to write post-simulation triggers shouldn't be necessary here - mainly because I just don't understand why the built-in capability doesn't do what you want.

    Regards,

    Andrew.

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