Running Power Optimization - 2022.1 English

Power optimization works on the entire design or on portions of the design (when set_power_opt is used) to minimize power consumption. Power optimization can be run pre-place or post-place in the design flow, but not in both places. The pre-place power optimization step focuses on maximizing power saving. This could result in timing degradation in rare cases. If preserving timing is the primary goal, the post-place power optimization step is the recommended option. This step performs only those power optimizations that preserve timing. You could also run phys_opt_design -bram_enable_opt at post-place to revert some of the block RAM enable optimizations which affect timing. A typical pre-place power optimization script would be:

synth_design
opt_design
power_opt_design
place_design
route_design
report_power

The syntax for this command is:

power_opt_design [-quiet] [-verbose]