Visualizing parts of a design that have zero percent congestion helps to identify regions that could be used to add additional structures such as hard macros, soft blocks, or routing. Alternatively, this can help to identify regions in a design that could be removed to produce a more compact design during floorplanning.
To show only gcells with zero percent congestion:
- Click the Filter button on the Congestion Analysis assistant toolbar.
- Choose Show Empty Global Cells Only from the drop-down list.
The heat map is turned off and only global cells with zero congestion are displayed in the main window.
The histogram and the global cell track utilization table are disabled and cannot be filtered or customized in this mode.
Related Topics
What tasks can I perform using the Congestion Analysis assistant?