Hi , I tried a simple flow of dflop using cadence and openlane . I got the constrains for pins to user wrapper from openlane and ported to cadence but still in cadence layout I dont see tool place clkbuffers .PFA my constrain files. pls let me know if Its correct as even my clk network in cadence dont have buffers, which is suspicious of constrains being wrong @Anton Maurovic (efabless support)