Incremental Optimization

Overview of Incremental Optimization

The incremental optimization capability in the Intel® Quartus® Prime Pro Edition software offers a fast methodology to converge to design sign-off. The traditional fitter stage is divided into finer stages for more control over the flow in the Intel Quartus Prime Pro Edition software:

  • Plan stage allows legal placement and clock planning, along with timing analysis on preliminary I/O and HSSI to FPGA fabric transfers
  • Placement stage enables timing analysis before proceeding to the Route stage. The Placement stage is split into an Early Placement stage and a final placement stage:
    • Perform timing analysis after the Early Placement stage while the rest of the flow is still running.
    • Chip planner provides a visual view of the Early Placement stage.
  • Route is split into Route and Post-Route stage for faster design convergence.
    • 3-corner timing analysis after route, and 4-corner timing analysis after post-route reduces compile time.
    • The post-route stage offers an Engineering Change Order (ECO)-like flow where setup and hold failures are automatically fixed, thus reduces compile time.
    • High-speed or low-power tile optimization is performed in the Post-Route stage.

Online training: Incremental Optimization with the Intel Quartus Prime Pro Edition