Intel® Quartus® Prime Pro Edition User Guide: Design Compilation

ID 683236
Date 1/27/2022
Public

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2.4.1. Running the Fitter

The Compiler's Fitter module performs all stages of design place and route, including the Plan, Early Place, Place, Route, and Retime stages.

The Intel® Quartus® Prime Pro Edition Compiler allows control and optimization of each individual Fitter stage, including the Plan, Place, and Route stages. Run all stages of the Fitter as part of a full design compilation, or run any Fitter stage independently after design synthesis. Before running the Fitter, you specify settings that impact Fitter processing.

After running a Fitter stage, view detailed report data and analyze the timing of that stage. The Compiler preserves Fitter results of the final snapshot by default.

  1. Specify initial Fitter constraints:
    1. To assign device I/O pins, click Assignments > Pin Planner.
    2. To assign device periphery, clocks, and I/O interfaces, click Tools > Interface Planner .
    3. To constrain logic placement regions, click Tools > Chip Planner.
    4. To specify Fitter optimization goals, click Assignments > Settings > Compiler Settings. Compiler Optimization Modes describes these options in detail
    5. To fine-tune place and route with advanced Fitter options, click Assignments > Settings > Compiler Settings > Advanced Settings (Fitter)
  2. To run one or more stages of the Fitter, click any of the following commands on the Compilation Dashboard:
    • To run all Fitter stages in sequence, click Fitter.
    • To run only device periphery placement and routing, click Plan.
    • To run only logic placement, click Place.
    • To run only logic routing, click Route.
    • To run only retiming of ALM registers into Hyper-Registers, click Retime.2
    • To run the Implement flow (runs Plan, Place, Route, and Retime stages), click Fitter (Implement).
    • To run the Finalize flow (runs Plan, Place, Route, Retime, and Finalize stages), click Fitter (Finalize).
2 Retime available for Intel® Hyperflex™ architecture devices only.