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Cannot run Assura RCX

Mulb

Hello,

I am trying to do a post-layout simulation of a ring oscillator to determine why there is a discrepancy between the simulated oscillation frequency and the fabricated chip. Unfortunately when trying to use Assura RCX to do the parasitic extraction, I am unable to run RCX because the run button is grayed out. I have a successful LVS with everything matching and no errors. The help menu regarding RCX simply says that after a successful run of LVS, I can reopen the run and "Once the run is opened, the Run RCX... item is enabled in the Assura menu." However, if I open the run, there is still no menu option called Run RCX, nor anything that mentions RCX. I also found that if I attempt to run Assura from avview, the avview Assura Form also has "RCX -> Run..." grayed out as well as "Setup -> RCX setup..." grayed out. Does anyone have any idea what is wrong with my RCX? 

I have attached pictures demonstrating what I see.

Thanks,

G

Parents
  • Quek

    Hi G

    Would you please provide the versions of your Virtuoso and Assura?

    terminal> virtuoso -W
    terminal> assura -W

    I think you might not have included EXT package in your cshrc file. Do you see a "Quantus" or "QRC" menu in your layout editor? You should get an output by executing the following 2 cmds:

    terminal> env | grep QRC_HOME
    terminal> which qrc


    Assura RCX is an old parasitic extractor and has already been replaced by QRC many years ago. QRC has been rebranded as Quantus in recent years.


    Best regards
    Quek

  • Mulb
    in reply to Quek

    Quek,

    Thanks, I knew I was forgetting something, the versions are Virtuoso IC6.1.7-64b.500.5, and Assura 4.1_USR5_HF14. 

    The second set of commands yields: "/usr/bin/which: no qrc in (lots of directories)" which I assume means I don't have Quantus?

    What should I be looking for within the cshrc file? 

    Thanks,

    G

Reply
  • Mulb
    in reply to Quek

    Quek,

    Thanks, I knew I was forgetting something, the versions are Virtuoso IC6.1.7-64b.500.5, and Assura 4.1_USR5_HF14. 

    The second set of commands yields: "/usr/bin/which: no qrc in (lots of directories)" which I assume means I don't have Quantus?

    What should I be looking for within the cshrc file? 

    Thanks,

    G

Children
  • Quek
    in reply to Mulb

    Hi G

    >>> "/usr/bin/which: no qrc in (lots of directories)" which I assume means I don't have Quantus?
    Yes, that is correct.

    Defining QRC_HOME shell variable and having the path to "qrc" executable in .cshrc file should be sufficient.


    Best regards
    Quek

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