你好,我查了下手册,psynopt是一条优化时序的命令。如果加上-size_only或者-in_place_size_only可以通过改变cell的尺寸来优化时序:psynopt
Performs incremental optimization on the design
-size_only Restricts optimization to sizing changes only. Optimization procedures that insert new cells and remove cells are disabled.The -size_only and -in_place_size_only options are mutually exclusive.