fast_route_opt

ROUTE_OPT_ALL_IN_ONE true 

setNanoRouteMode  -route_detail_end_iteration  2

   setNanoRouteMode -route_detail_fix_antenna false

  setOptMode -opt_area_recovery false

  setOptMode -opt_enable_restructure false

   setOptMode -opt_post_route_fix_si_transitions false

  setDesignMode  -expressRoute true

  setDesignMode -congEffort low

optDesign -postRoute -setup -hold -outDir $lastTimingDir

set CDNC_PATH_GROUPS(reg2reg) { -from [all_registers] -to [all_registers]}

set CDNC_PATH_GROUP_OPTS(reg2reg) { -effortLevel low}

set CDNC_PATH_GROUP_OPTS_CK2CK_ONLY(reg2reg) { -effortLevel low}