I m wondering if the max fanout default = 5 setting is consi

Question

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 gt 10 for all synthesis results Report 2003 65 Report 1968 68 Report 0081 32 Report pre sign 68 Report r busy 65 Eventually the reason for the slow design performance I see similar problems on other designs

Vijayan Krishnan · Answer

Its initial run During resizer design those high fanout values will be optimized as per given value

Tobias Strauch · Answer

So zipdiv synthesis preroute v is not the golden netlist after abc fanout optimization

Vijayan Krishnan · Answer

Please file a GitHub issue with source files and logs

Vijayan Krishnan · Answer

as per configuration files standard cells fanout should be 6 and clock buffer fanout is 20 If its more than that design not optimized properly