#670 Max fanout default considered ?
New issue created by
cloudxcc
I'm wondering if the max fanout default = 5 setting is considered at all. For example, the default regression output of the zipdiv design shows fanouts > 10 (for all synthesis results, including zipdiv.synthesis_preroute.v):
Report: _0081_: 32
Report: pre_sign: 68
Report: r_busy: 65
It can be verified by running the design and by making a grep of the above signals on the synthesis results netlists.
This is eventually the reason for the slow design performance. I see similar problems on other designs.
I'm using a 3 wwek old version and the default regression run commands. If you really need more information (logs) let me know. For fanout analysis I'm using a private (not open-sourced yet) EDA tool. A log wouldn't provide more information than the above.
The-OpenROAD-Project/OpenLane