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How to keep pcell during stream out

Soldier

Hi：

  while cadence change to IC6.1.1 or above，the option of stream out has not “keep pcell”，what could I do to keep pcell during stream out and stream in.

  Thanks!

Parents
  • Andrew Beckett

     Praveen,

    I guess theoretically you could write an implementation of the poParamCellNameMap function which computed a name for the pcell variant and recorded (in a file) the original pcell, parameters used, and resulting mapped name.

    You could then do a stream in and then write some SKILL code which read the mapping file you saved during stream out, and then traversed the hierarchy and anywhere one of the mapped cells was used, replace that instance with an instance of the pcell with the same parameters. Once done it could clean up (delete) all the mapped cells from the library you streamed in.

    Doesn't strike me as being that hard to write, but I have not seen anyone actually do this so far. It's only ever going to work if you generate the data on the stream out and then use exactly the same information after stream in - so how useful that would be in practice, I'm not sure...

    Regards,

    Andrew. 

Reply
  • Andrew Beckett

     Praveen,

    I guess theoretically you could write an implementation of the poParamCellNameMap function which computed a name for the pcell variant and recorded (in a file) the original pcell, parameters used, and resulting mapped name.

    You could then do a stream in and then write some SKILL code which read the mapping file you saved during stream out, and then traversed the hierarchy and anywhere one of the mapped cells was used, replace that instance with an instance of the pcell with the same parameters. Once done it could clean up (delete) all the mapped cells from the library you streamed in.

    Doesn't strike me as being that hard to write, but I have not seen anyone actually do this so far. It's only ever going to work if you generate the data on the stream out and then use exactly the same information after stream in - so how useful that would be in practice, I'm not sure...

    Regards,

    Andrew. 

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