Hi all I thought you might be interested in this I ve run a

Question

Hi all I thought you might be interested in this I ve run a couple of experiments with OpenLane amp Sky130 1 ADDER TYPE comparison 2 Resizer Vs OpenPhySyn comparison 3 Synthesis Strategies comparison I m sharing the results here <https docs google com spreadsheets d 1hmsmxpW9iaq0NfHA3fme3cl6m87pZ5Xs pFltLCJQUE edit usp=sharing> I ll be conducting more experiments over time and adding them to the same spreadsheets

Anton Blanchard · Answer

Nice work < Amr Gouhar> Lots of interesting stuff to look into I m guessing this wasn t using the `openroad update` branch and even if it was it doesn t have the recent resizer fix

Anton Blanchard · Answer

It could be interesting to look at OpenPhySyn vs Resizer with that might be another issue or two we need to find in the Resizer

Anton Blanchard · Answer

Most of the FA FCA yosys adder tests matched what I saw RCA has less area but much worse timing than RCA and yosys expected FA and yosys are similar in terms of timing expected FA has a little less area than yosys expected

Anton Blanchard · Answer

There are a few unexpected things in there eg `sha512` where RCA has much better wns than FA or yosys