Document the verification test for XAttention Triton kernel KV chunking:
- 32K and 64K test results with threshold 0.9/0.95/1.0
- Key finding: threshold=1.0 achieves alignment (~0% diff)
- threshold<1.0 shows 10-13% difference due to per-chunk threshold application
- Conclusion: softmax normalization is correct, issue is threshold accumulation
Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)
Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>
