Why do I see different timing in the Quartus® II timing report and the TimeQuest timing analyzer?

Description

Due to a problem in the Quartus® II software version 13.1, you may see the timing reported in the Quartus® II software timing report is different from the timing reported in the TimeQuest Timing Analyzer for Stratix® V devices. The timing reported by the Quartus® II software timing report is correct.

Resolution

To work around this problem, follow these steps in the TimeQuest Timing Analyzer:
  1. Netlist > Delete Timing Netlist
  2. Netlist > Create Timing Netlist
  3. In the prompted property menu, append "-force_dat" to the Tcl command and click OK.
  4. Read the Synopsys Design Constraints (.SDC) file and update the timing netlist.

Following these steps, report timing produces the same timing report as the Quartus® II software.

This problem is fixed in  Quartus® II software version 14.1.