Congestion Metrics for UltraScale+ and Newer Device Families - 2023.2 English

Vivado Design Suite User Guide: Design Analysis and Closure Techniques (UG906)

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2023.2 English

For UltraScale+ and newer device families, use the Interconnect Congestion Level metric. This metric has simplified representation and improved accuracy, and is better aligned to how the router estimates congestion. The color of the bins for this metric is based on the congestion levels.

Figure 1. Interconnect Congestion Level Metric Properties

In the configuration window, the metric view can be configured to show the following:

  • Estimated routing congestion (impacts the placer), actual routing congestion (impacts the router), or both
  • Only items above the interconnect utilization threshold (0.9 = 90% usage)
  • Any combination of specific routing types (Short, Long, or Global)
  • Any combination of directions that the routing traverses
Figure 2. Interconnect Congestion Level Configuration