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  3. PVS Extraction Issue - Not finding PVS or QRC tab in Virtuoso...

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PVS Extraction Issue - Not finding PVS or QRC tab in Virtuoso Layout to do parasitic extraction

vaishakprathap
vaishakprathap over 3 years ago

Hello,

I am using AMS 0.35um (C35B4C3) Process Hit Kit.

I finished a layout in Virtuoso Layout L. It does not have a schematic associated with it. I want to extract the layout and run simulation to ensure proper working.

The issue faced is that I do not know how to extract the layout. I do not find a PVS or QRC tab in Layout Window to do extraction. I went into the Launch-->Plugins tab but was unable to find a PVS tab.

The Cadence version is: IC6.1.8-64b.500.12

The Assura version is: sub-version 4.1_USR6_HF11

Checking for PVS home and version returns the following:

vaishakp@moose2(9-5:01am)$ env | grep PVS_HOME
PVS_HOME=/util-cse/cadence/ic/
vaishakp@moose2(10-5:04am)$ which pvs
/sbin/pvs

A deadline is approaching in a week and would be gratetful for any help.Kindly guide me on how to extract the layout without the schematic using PVS or QRC and run simulation on an extracted netlist....

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  • Andrew Beckett
    Andrew Beckett over 3 years ago in reply to vaishakprathap

    OK, so you haven't set the UNIX PATH to include PVS - if it's not in your path, it won't appear in the UI.

    You referred to the path setting in your earlier post in the thread, but presumably that file is not being sourced. That's what you need to fix.

    Andrew

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  • vaishakprathap
    vaishakprathap over 3 years ago in reply to Andrew Beckett

    Hi Andrew,

    Thanks for the quick response. Really appreciate the help.

    How do we know whether PVS is installed in that path?

    As I mentioned earlier the PVS_HOME path is already set as /util-cse/cadence/ic/. So I was assuming the PVS Tool must be in there.

    If I go inside /util-cse/cadence/ic/bin I can see 2 files pvs4dfii and pvs4dfiiver which has pvs names in it. Does this show PVS is installed?

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  • Andrew Beckett
    Andrew Beckett over 3 years ago in reply to vaishakprathap

    Ah, I just realised what's wrong in what you've. You've set PVS_HOME to the IC installation. It needs to be to an installation of PVS (see http://downloads.cadence.com - you'll see that there is PVS191, PVS201 and PVS211). If you don't have it installed somewhere, you'll need to install it first, and point to the right software. That's your problem...

    Regards,

    Andrew

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