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Placement density

gops

What are the implications of placement density?

How to determine the optimum placement density  for a design? 

Parents

  •  placement density is the amount of space utilised for placement of standardcell,sparecells,endcaps,tapcells,decaps etc(all kind of cells except fillers) out of total available space.

    Its better to close a design with 85-90% density beyong which tool actually takes huge time to move a cell or add extra repeater during timing optimizations

          We can anticipate the density by choosing the die area 20-35% more than the area which we get as output from synthesis.

     

    Thank you 

Reply

  •  placement density is the amount of space utilised for placement of standardcell,sparecells,endcaps,tapcells,decaps etc(all kind of cells except fillers) out of total available space.

    Its better to close a design with 85-90% density beyong which tool actually takes huge time to move a cell or add extra repeater during timing optimizations

          We can anticipate the density by choosing the die area 20-35% more than the area which we get as output from synthesis.

     

    Thank you 

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