Note that these two situations are mutually inclusive. We provide our computation steps and some examples below:
Note that these two situations are mutually inclusive.
Finally, we provide our computation stepsbelow:
- For each hard MACRO:
- For each gridcell it overlaps with:
...
...
@@ -227,21 +229,6 @@ Note that these two situations are mutually inclusive. We provide our computatio
2. Divide by (the grid_cell dimension multiplied by routing per micron)
3. Add to the corresponding gridcell
- Example:
- Given a single hard macro HM_1 (pink rectangle in the figure below), we have two grids instantiated on the top-right and bottom-left, driven by the ports at “P_1” located at the bottom-left of the canvas.
- Whenever there are gridcells partially overlapped, whether in horizontal or vertical direction, we set the vertical congestion of the top gridcells to 0 (if partially overlapped vertically) and we set the horizontal congestion of the right gridcells to 0 (if partially overlapped horizontally).
#### *Computation of the final congestion cost:*
- Adding the Macro allocation congestion and Net routing congestion together for both Vertical and Horizontal congestion map
- Concat both vertical and horizontal congestion maps together.
