Matt Liberty
Matt Liberty
As this PR is proceeding slowly I've opened https://github.com/The-OpenROAD-Project/OpenROAD-flow-scripts/pull/2171 to merge the RAM related files (only typ corner) to enable the user in #2099
> @maliberty it failed to build an asap7 design. Still fine? Yes
> @maliberty any concerns about adding `HAS_IO_RING` as optional environment variable? Should I document that somewhere? In order to generate a pad ring the user will need to set FOOTPRINT_TCL...
This is marked as a draft - should I hold off on review?
@dnltz will you make a PR once they are ready?
Drive strength, pin capacitance, and area are the most critical. In other PDKs we observe an smaller ratio of increase. To me this suggests some inefficiency in the cell layout.
@dnltz thoughts? It was your change.
It is particularly odd since the `RSZ delta area` is negative suggesting we removed more logic than we added which should tend to reduce overflow.
@oharboe did you try delta debug on this?
As a temporary workaround you could try adding `-overflow 0.25` which should "converge" before the trouble starts. The detailed placer will have to worker harder so I'm not certain it...