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ERROR with loadLefFile in innovus

Suryansh Singh

Hello guys,

I am using loadLefFile command in innovus version 17.11. I am trying to give the files LEF files using variables. In one variable I have provided the complete path to my tech LEF and there is another variable that for cell LEFs. For Eg.

loadLefFile $tech_lef_path $cell_lef_path

tech_lef_path-  points to the tech LEF

cell_lef_path - A string of paths to all the cell lefs to be used. 

But I guess that loadLefFile is treating the entire string in cell_lef_path as a single path and obviously it would not find such a path. Does anyone have a solution for this?

 

Parents

  • Hi Suryansh,

    Please try by splitting the commands as follows:

    loadLefFile $tech_lef_path

    loadLefFile $cell_lef_path 

  • in reply to Chetan B S

    Hi,

    Thanks for the reply. I had already tried that. In this what would happen is :

    loadLefFile $tech_lef_path  would work fine as the variable $tech_lef_path has just one path to my tech lef but,

     loadLefFile $cell_lef_path would not work as it has multiple cell lefs specified. I don't want to load each of these lefs separately.

    For more clarity, my cell_lef_path holds a value like "PATH_TO_CELL_LEF1 PATH_TO_CELL_LEF2 PATH_TO_CELL_LEF3...... ". THe loadLefFile command tries to look for the entire string as a single path.

    I did find a solution for myself but I am not completely satisfied with it. I used the following command :

    eval "loadLefFile $cell_lef_path"

    I believe there could be a better solution for this.

    Regards

    Suryansh Singh

  • in reply to Suryansh Singh

    according to the docs, that should work, however this is a really outdated way to read in your design. Check the user guide for methods to read in the design.

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