How do I speed up my Verilog HDL simulation time in the ModelSim® software? - How do I speed up my Verilog HDL simulation time in the ModelSim® software? Description By default, the ModelSim software runs in a debug-optimized mode. To run the ModelSim software in speed-optimized mode, add the following two vlog command line switches: vlog -fast -05 In this mode, module boundaries are flattened and loops are optimized. This eliminates levels of debugging hierarchy, which may result in faster simulation. This switch is not supported in the ModelSim-Altera ® simulator. Custom Fields values: ['novalue'] Troubleshooting novalue False ['Simulation'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']