#278 Get stuck at Global routing when implementing FPGA fabrics Issue opened by nguyendao-uom Describe the bug It's weird that the openlane flow can successfully run (RTL to GDS) for a fabric with 2x2 CLBs but get stuck at Global routing when implementing for a 4x4 CLBs To Reproduce Please find more details at https://github.com/FPGA-Research-Manchester/FABulous-SKY130 efabless/openlane