cells are not honoring regions even after using setPlaceMode -forceFenceRegion true

[kapil_vlsi1]

cells are not honoring regions even after using setPlaceMode -forceFenceRegion true in Encounter.

Is there a way in encounter how we can make the tool honor regions. Please help.

 

[nav_vlsi]

Hi Kapil,

Did u try , something like this

setPlaceMode -forceFenceRegion true -hardFence true -honorSoftBlockage true
placeDesign
checkPlace
refinePlace -hardFence true
checkPlace


also dont forget to add
setOptMode -honorFence true

sometimes during optimization, if your congestion is high , fences would be ignored. so its better to set it up front in deisgn flow.

 

[kapil_vlsi1]

Its working but the main reason why we are giving is to legalize placement. Still some overlaps in standard cell after refine place and setPlaceMode -forceFenceRegion true -hardFence true -honorSoftBlockage true
or do we have to fix it manually.