place ：
#place_opt_design -expanded_views -prefix $vars(step) -out_dir $vars(edi_rpt_dir)
setDesignMode -flowEffort standard
setPlaceMode -place_global_cong_effort auto
setPlaceMode -place_global_timing_effort medium
place_design
refinePlace
(place 完直接route)
route:
setNanoRouteMode -drouteEndIteration 40
postroute:
关掉optDesign
