When analyzing congestion, the level reported by the tools can be categorized as shown in the following table.
Note: Congestion levels of 5 or higher often impact QoR and always lead to longer router runtime.
|1, 2||2x2, 4x4||None||None|
|3, 4||8x8, 16x16||Mild||Possible QoR degradation|
|5||32x32||Moderate||Likely QoR degradation|
|7, 8||128x128, 256x256||Impossible||Likely unroutable|