Step 7: Running Functional Simulation with SAIF Output - 2024.1 English

Vivado Design Suite Tutorial: Power Analysis and Optimization (UG997)

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2024.1 English

Now that you have created an AMD Vivado™ Design Suite project for the tutorial design, you can set up and launch the Vivado simulator to run post-synthesis functional simulation. Simulation generates a switching activity interchange format file (SAIF) that enables you to do more accurate power estimation on your design.

  1. In the Flow Navigator, click Settings to open the Settings dialog box and set the simulation properties in the Simulation section.
  2. In the Simulation section of Settings dialog box, the following simulation defaults are automatically set for you based on the design files:
    • Simulator language: Mixed
    • Simulation set: sim_1
    • Simulation top-module name: testbench

  3. In the Elaboration tab of the Simulation section, make sure the xsim.elaborate.debug_level is set to typical, which is the default value.
  4. In the Simulation tab, enter the SAIF file name as power_tutorial_func.saif for xsim.simulate.saif. Observe that the xsim.simulate.runtime is 1000 ns.
  5. Make sure to check the xsim.simulate.log_all_signals box.
  6. Click OK.

    The simulation settings are now properly configured. You can launch the Vivado simulator to perform a post-synthesis functional simulation of the design.

    Note: The power reporting and analysis are not performed at the RTL level. They are performed at the netlist level.
  7. In the Flow Navigator, click Run Simulation > Run Post-Synthesis Functional Simulation.

    When you launch the Run Post-Synthesis Functional Simulation command, the Vivado simulator is invoked to run the simulation.

    After the simulation completes, click x at the top right corner to close the simulation window.