compile -no_design_rule

jackychan2010

请问compile的时候，加上-no_design_rule，目的是干嘛呢？

david1126

-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 for  the  command
              to  exit before fixing design-rule violations, thus allowing you
              to check the results in a constraint report  before  fixing  the
              violations.    The   -no_design_rule,   -only_design_rule,   and
              -only_hold_time options are mutually  exclusive.   You  can  use
              only one of the options.  The default is to perform both design-
              rule fixing and mapping optimizations before exiting.

jackychan2010

回复 2# david1126

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