set path_margin 从50 调到80 ，timing是变严格还是宽松了？【已解决】

sunhongwei

如题 没用过这个cmd

sunhongwei

This command adjusts the data required time for specified paths by  the
       specified  margin_value amount. The required time for any startpoint in
       from_list to any endpoint in to_list is  adjusted  by  margin_value.  A
       positive  margin  value results in a more restrictive or tighter check,
       whereas a negative margin value results in a less restrictive or looser
       check.  Based  on  the type of timing constraint, either setup or hold,
       the margin value is either subtracted from or added to the default data
       required time.

fangwang85

变严格了

真我个性

A positive  margin  value results in a more restrictive or tighter check
一个正的path margin值会让工具更加严格和紧的时序检查
当然工具就会修得更狠
通过到route的时候会把path margin设置成0的，不要再让工具过修了

sunhongwei

This command adjusts the data required time for specified paths by  the
       specified  margin_value amount. The required time for any startpoint in
       from_list to any endpoint in to_list is  adjusted  by  margin_value.  A
       positive  margin  value results in a more restrictive or tighter check,
       whereas a negative margin value results in a less restrictive or looser
       check.  Based  on  the type of timing constraint, either setup or hold,
       the margin value is either subtracted from or added to the default data
       required time.

sunhongwei

11111111111

sunhongwei

   

fangwang85 发表于 2021-4-12 16:07
变严格了

加margin， met要求 提高了 ，工具会修的更加狠 对吧