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Query regarding Virtuoso EMX tool

VLSI lab IITB

In the GUI virtuoso EMX tool, even on setting the port settings suitably (as seen from the below image, the tool does set the P001 and P000 ports to MINUS and PLUS respectively), yet at the end it returns error saying P000 not found. Please provide solution for this issue.

I have added the link for the image as reference (as I am not able to upload picture in the forum): https://drive.google.com/file/d/1Foik_uZqrrz2x2NJMIsy_1xVcMiU35V1/view?usp=sharing

 

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  • Saloni Chhabra

    I can't access the image. Can you copy and paste the 'text' from EMX run log showing the exact error message?

    Saloni

Reply
  • Saloni Chhabra

    I can't access the image. Can you copy and paste the 'text' from EMX run log showing the exact error message?

    Saloni

Children
  • VLSI lab IITB
    in reply to Saloni Chhabra

    Hi Saloni,

    Here is the text from the EMX run log.

    EMX version 2023.1.0 (ad0e223) starting on vlsi33.iitb.ac.in
    Command line for EMX version 2023.1.0:
    ------------------
    /vlsi/cad/cadence/EMX/tools.lnx86/emx/bin/64bit/emx
    /home/users/madhava/work_gpdkl45/trying_emx/EMX_work/IND_Working_inductor_8_turns_test.work/inductor_8_turns_test.gds

    inductor_8_turns_test
    /vlsi/cad/cadence/EMX/share/emx/virtuoso_ui/emxreference/processes/generic65.proc
    -e 1 -t 1 -v 0.5 --3d=* -p P000=PLUS -p P001=MINUS -i P001 --sweep 1e+08

    2e+10 --sweep-stepsize 1e+08 --verbose3 --print-command-line --log-time-level=0
    --extended-warnings
    --message-file=/home/users/madhava/work_gpdkl45/trying_emx/EMX_work/IND_Working_inductor_8_turns_test.work/emxmsg.log
    -l 0 --cadence-pins=1 --quasistatic --dump-conductivity --parallel=0
    --simultaneous-frequencies=0 --recommended-memory --format=matlab -y
    /home/users/madhava/work_gpdkl45/trying_emx/EMX_work/IND_Working_inductor_8_turns_test.work/inductor_8_turns_test.y
    --format=touchstone -s
    /home/users/madhava/work_gpdkl45/trying_emx/EMX_work/IND_Working_inductor_8_turns_test.work/inductor_8_turns_test.s%dp
    ------------------

    8 CPUs detected
    Using 8 CPUs
    Checking out feature "EMX_Solver" 6.3...OK
    Memory limit of 12.33 GB out of 15.41 GB
    CPU supports SSE level 5
    Reading GDSII file...
    /vlsi/cad/cadence/EMX/tools.lnx86/emx/bin/64bit/emx: info: conversion to internal units requires non-integer scaling;
    the process file uses 1 internal units per micron. This is usually not a problem, but updating the process file
    to specify a larger internal units per micron is recommended
    Processing layout...
    Creating mesh...
    /vlsi/cad/cadence/EMX/tools.lnx86/emx/bin/64bit/emx: error: labels for port "P000" not found
    Process exited abnormally with status 1

  • Saloni Chhabra
    in reply to VLSI lab IITB

    Hi,

    Can you check if:

    - there is a pin called PLUS in your layout?

    - is this pin at the top-level? You've set -l 0 which means pins only at the top-level of the layout will be searched.

    Saloni

  • VLSI lab IITB
    in reply to Saloni Chhabra

    Hi,

    1) Yes, I have placed pin called PLUS but still it is searching for P000.
    2) Yes, PLUS and MINUS are top level pins.

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