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placeDesign runTime is 90+ Hrs.

gpremala

PlaceDesign is taking 90+ Hrs to finish the job, and after that if i check for checkPlace I am getting violations

Violations like Overlapping 20K+ instances, region/fence 0.4M Instances, Orientations 0.4M Instances

All the standard cells are placing together and they are not uniform distribution.

The Design has 2M instances and 400+ macros.

EDI version is 10.13

Please suggest me to resolve this issue.

 

Parents
  • sureshm
    Hi Gopi,

    below are the few experiments that you can chose to implement..

    1)  Run the placement without any constraints ..!! That gives you the best area ... !!
    2)  Run the placement with Rectangular DEF ( this gives a picture whether the block shape is a problem)
    3)  Try the option of Breaking the Block size into manageable pieces
    4)  Reduce weights on the i2r & r2o Paths ..
    5)  Analyze if any of your optDesign attributes are kicking up this problem
    6)  How is your congestion maps look like?

    Thanks
    suresh
Reply
  • sureshm
    Hi Gopi,

    below are the few experiments that you can chose to implement..

    1)  Run the placement without any constraints ..!! That gives you the best area ... !!
    2)  Run the placement with Rectangular DEF ( this gives a picture whether the block shape is a problem)
    3)  Try the option of Breaking the Block size into manageable pieces
    4)  Reduce weights on the i2r & r2o Paths ..
    5)  Analyze if any of your optDesign attributes are kicking up this problem
    6)  How is your congestion maps look like?

    Thanks
    suresh
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