markdown/gh_discussions/Query/2927.md

Iterating on top level floorplan with macro pin constraints

Tool: Initialize Floorplan

Subcategory: Flow customization

Conversation

oharboe

I would like to iterate on the floorplan of the top level of our design. In doing so, I want to change the pin constraints for the macros used at the top level.

However, make generate_abstract goes all the way to detailed routing before producing a .gds, .lef and .lib file. This takes a long time.

Is there a way to run generate_abstract after IO pin placement on the macro without going through detailed route?

maliberty

The flow itself doesn't have a mechanism but the command should work at that point (though it hasn't been tested). You could add a flow option if needed.

oharboe

Solution implemented: make skip_cts skip_route generate_abstract