a2o/dev/pd

branch=pd

• for source experiments (parameters, etc. to change core gen), and other source updates for PD

minimize cache/queues/etc. for eFabless

• the parameters were likely not tested much, and may have dependencies, etc.
• see which ones can change and still compile/run simple test; document dependencies

test OpenROAD tools

1. attempt unit (or sub-unit) synthesis and static timing, using blackbox arrays amd estimated wiring for some pdk (equivalent to a CI timing script to catch functional changes that break timing)

• what are the OR steps to do this?

  • floorplan - unbounded?
  • pins - no placement if no bounds, and relaxed i/o assertions?
  • tap cells/power dist/etc. - not needed (account for in estimated wiring?)
  • clock tree synthesis - no (assume ideal clocks + fudge)
  • iterate
    • placement
    • cap/slew/fo checks
    • setup/hold

• are results consistent with expected cycle time?