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How to check if CDF-update is necessary?

skillprogramme

Hi!

I have been using the scripts provided in the solution linked below for updating CDF parameters in cells and libraries with great success. However, I am often interested in checking if a cell does require a CDF update before actually performing the update, since the update requires "append" mode and is rather time consuming (especially when running on a large library). Is there any good way to utilize this script/other functionality to check if an instance in a cell requires a CDF-update without doing the actual update? It can be quite dangerous to run the script on a whole library with edit and not knowing which parameters that changed in the end. 

My hack-around for this has so far been to dump all CDF parameters to a log file, run the script, dump the parameters again and do some parsing and comparison of these logs. I would however prefer something simpler.

Best regards,

Max 

 

Related solution:

http://support.cadence.com/wps/myportal/cos/COSHome/viewsolution/!ut/p/c5/dY1bDoIwFAXX4gruLUotn9gIQg1EIAr8kKrgC9rGt6xeXIBzPicnAyUMU_J5Osj7SSvZQg4lrYjlcyIm6MQ8YhgwGolkPccB2PwetMI_uAgFlNOftyzC0PG9bIYBF0HIpmMLBYW10tduKGWQ46RKz2jCLB2_Prt-STS7idREZFULL25UG5YX-9HYbV10Jtma5K2lfzxKP3wUNN7Llt-4G9tN7-AIooXuajAX1XvMHX0B7QyI-A!!/dl3/d3/L2dBISEvZ0FBIS9nQSEh/ 

Parents
  • Andrew Beckett

    Hi Max,

    The reason was that in the application that I added this for (creating an instance inside a hierarchical pcell, where I needed to call the callbacks), it was a fresh instance and so everything should have been at the default - and I was passing the cell CDF into the CCScreateEffectiveCDFLookalike function. Occasionally if called at the wrong time, the effective Cell CDF can end up with non-default parameters in (I forget the scenarios) and so I wanted to make sure it was reset. I then took the effective lookalike CDF that I was creating, and set the parameters I wanted to set for the child instance, and then called the callbacks on it.

    If you're passing in the instance CDF, then you don't really want to reset everything. So maybe adding another argument to the function to not reset would make sense (or just comment out the code).

    I'll add that to my list of things to do - to update the solution to the latest version, and to add this parameter.

    Regards,

    Andrew.

Reply
  • Andrew Beckett

    Hi Max,

    The reason was that in the application that I added this for (creating an instance inside a hierarchical pcell, where I needed to call the callbacks), it was a fresh instance and so everything should have been at the default - and I was passing the cell CDF into the CCScreateEffectiveCDFLookalike function. Occasionally if called at the wrong time, the effective Cell CDF can end up with non-default parameters in (I forget the scenarios) and so I wanted to make sure it was reset. I then took the effective lookalike CDF that I was creating, and set the parameters I wanted to set for the child instance, and then called the callbacks on it.

    If you're passing in the instance CDF, then you don't really want to reset everything. So maybe adding another argument to the function to not reset would make sense (or just comment out the code).

    I'll add that to my list of things to do - to update the solution to the latest version, and to add this parameter.

    Regards,

    Andrew.

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