Stats

  • Locked Locked
  • Replies 1
  • Subscribers 142
  • Views 1412
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Skill script can't complete the run

SrBraj

Hi

I have written a skill script to know the default and maximum value of the parameters. In this script, I am creating a sch/layout view of the cell and placing the device. Read the default and maximum parameter value value and then deleting the device. Again place the new device on the same sch/layout view and read the param values and delete the device and so on.

When I use the sch view, then my script read the def and max param value from the placed device and write them to the file. This is working fine.

But, when I use the layout view, then my script read the def and param value for few devices but then the script stuck at some point. The last line in the CDS.log file is "# Memory report: using      15,983 MB, process size 17,118 MB at UTC 2020.10.19 05:10:28.066". This seems like that the virtual memory is all full and virtuoso can't place the p-cells any further.

Is there a way to release the virtual memory after deleting the device?

Thanks and Regards

Saurabh

  • Hi Saurabh,

    I suggest you contact customer support because understanding what's going on here is a bit tricky without seeing the code and the behaviour.

    In general if data is closed, or unreferenced, it should get garbage collected and the memory can be reused by Virtuoso. It doesn't necessarily free memory back to the OS, but Virtuoso should be able to re-use it. You may also want to try using the SKILL profiler (either in time or memory mode) to try to work out where the bottlenecks are.

    Andrew.

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.