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add mlkem test results

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FallenSigh
2026-07-08 03:18:19 +08:00
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doc/mlkem_test_results.md
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@@ -26,24 +26,20 @@ Final result for the isolated diagnostic run:
## Performance
### Multi-level isolated diagnostic
The following results are from isolated per-level runs. Each level was tested
for 100 iterations with software-only, CPU register path, and DMA path separated.
| Level | SW avg cycles | CPU avg cycles | DMA avg cycles | CPU vs SW | DMA vs SW | DMA vs CPU |
|---|---:|---:|---:|---:|---:|---:|
| k=2 / ML-KEM-512 | 19,684,481 | 432,358 | 189,105 | 45.5x | 104.1x | 2.29x |
| k=3 / ML-KEM-768 | 30,688,338 | 638,556 | 283,023 | 48.1x | 108.4x | 2.26x |
| k=4 / ML-KEM-1024 | 2,355,875 | 872,400 | 392,433 | 2.70x | 6.00x | 2.22x |
### k=4 recheck
| Level | SW avg cycles | CPU avg cycles | DMA avg cycles | CPU vs SW | DMA vs SW | DMA vs CPU |
|---|---:|---:|---:|---:|---:|---:|
| k=4 / ML-KEM-1024 | 6,025,486 | 718,672 | 388,959 | 8.39x | 15.49x | 1.85x |
| k=2 / ML-KEM-512 | 2,587,784 | 352,684 | 185,671 | 7.34x | 13.94x | 1.90x |
| k=3 / ML-KEM-768 | 4,056,378 | 523,656 | 279,588 | 7.75x | 14.51x | 1.87x |
| k=4 / ML-KEM-1024 | 6,025,486 | 718,672 | 388,959 | 8.38x | 15.49x | 1.85x |
## Notes
- CPU/DMA hardware paths were stable across 100 iterations for all levels.
- The software path showed run-to-run variance earlier; the custom allocator improved stability, but the k=4 recheck should be used as the cleaner reference for reporting.
- For the hardware accelerator claim, the most stable headline is:
- DMA path is about 2.2x faster than CPU register path.
- Hardware path is substantially faster than software, but the exact SW speedup depends on the software run used as baseline.
- Software, CPU register path, and DMA path all passed 100 iterations for k=2, k=3, and k=4.
- The DMA path is 13.94x to 15.49x faster than software across the tested levels.
- The CPU register path is 7.34x to 8.38x faster than software across the tested levels.
- The DMA path is about 1.85x to 1.90x faster than the CPU register path.
- The hardware advantage increases slightly as k grows, because the accelerated computation grows faster than the fixed software control overhead.