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problem with loading a DEF file

MiladSh

Hi,

I've run a placement algorithm and now I want to calculate the delay of the specific path in design.

I'm using the same LEF file but when I want to load the DEF file to SoC, it shows the error: SOCSYT-16302.

In general, is it possible to load a DEF file that hasn't been generated by SoC?

Regards

Milad

  • I'm not sure what your flow is here... to see path delays, you need to route, extract, and run timing. Why are you reading in a DEF?
  • Thanks for your answer! My first problem has been solved.
    Now I have a different problem. After the routing, I want to calculate delay of the specific path in the design. I know that I can do this from SDF file and calculate sum of the delays of the cells plus nets of that path. But I want to do this faster than this way. Is there a way to do this faster?
    Regards
    Milad
  • If you have routed and extracted, then do:
    report_timing -from startFlop/Q -to endFlop/D
    where startFlop and endFlop will be your particular instance names of course. There are lots of different options to report_timing, so check the command reference for what you specifically need. But this will sum up the timing path for you as well as list the cell/net delay info line by line (you may need to do report_timing -net to get separate lines for the nets).

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