Run the report_power
command on an implemented
design to ensure that the power constraints applied to the design reflect the initial
power estimation and thermal design. The report_power
command also shows any margin based on the constraints, ensuring design power is kept in
check. When you are generating multiple runs to close timing, AMD recommends running report_power
,
because often the design with the most slack might not be the best from a power
perspective. However, as long as there is slack, a design can be considered to have
closed timing, and having the report power results for every run allows you to select
the best implementation for power as well. For more information and an example script,
see Answer Record 76056.
Power Tip: If your design exceeds the
power constraints, a quick way to run a “what if” analysis is to export the results to
the Power Design Manager (PDM) tool and make
adjustments to see the impact on power.