You ran a timing analysis on the current design and then performed a HardCopy performance estimation on the design. However, the Performance Estimator cannot estimate the HardCopy f_MAX for any clock signal in the design because the Timing Analyzer did not report any clock signal f_MAX for the Performance Estimator to use. The Timing Analyzer did not report f_MAX for any of the clock signals in the design because of one of the following reasons:

• Each clock signal in the design is a nonoperational clock signal.

• The design contains complex timing assignments, and therefore the Timing Analyzer reported slack instead of f_MAX for the clock signals in the design.

• The design does not contain any register-to-register paths.