compile -no_design_rule

-no_design_rule
Determines, along with the -only_design_rule and -only_hold_time
options, whether the command fixes design-rule violations before
exiting.The -no_design_rule option specifies forthecommand
toexit before fixing design-rule violations, thus allowing you
to check the results in a constraint reportbeforefixingthe
violations.The-no_design_rule,-only_design_rule,and
-only_hold_time options are mutuallyexclusive.Youcanuse
only one of the options.The default is to perform both design-
rule fixing and mapping optimizations before exiting.

如果加上no_design_rule，那么不就没有优化design_rule的东西了。

比如我前面已经设置了，
set_max_transition 3.0 [current_design]set_max_capacitance 1 [current_design]
set_max_fanout 32 [current_design]
还起作用吗?
谢谢