PnR Analysis
cgra_pnr comes with a very simple analyzer on how the PnR performs. Currently
it computes:
- Area usage, such as PE and MEM tiles.
- Total wirelength.
- Routing resource usage
- Critical path delay (breakdown) and maximum clock frequency.
Here is an example for Harris:
Area Usage:
I ████ 6.25%
P ██████████████████████████████████████████████████████ 80.21%
M ██████████ 15.62%
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Total wire: 1202
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Critical Path:
Delay: 9.20 ns Max Clock Speed: 108.70 MHz
MUL █████████████████████████████ 43.48%
ALU █████████████████████████ 36.96%
SB █████████████ 19.57%
CB 0.00%
MEM 0.00%
REG 0.00%
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BUS: 16
TRACK 0 █████████████████████████████████ 49.67%
TRACK 1 ███████████████████ 28.91%
TRACK 2 █████████████ 19.40%
TRACK 3 ██████████████ 21.32%
TRACK 4 █████ 8.46%
BUS: 1
TRACK 0 ████████████████████ 30.08%
TRACK 1 █████████████ 20.21%
TRACK 2 █████ 8.11%
TRACK 3 █ 1.89%
TRACK 4 0.00%