December 2025 monthly summary for ROCm/aiter: Delivered a new LLM inference performance benchmark for batch prefill using a paged KV cache. Created bench_batch_prefill.py to benchmark mha_batch_prefill_func, with equal_seqlens defaulting to true and --no-equal_seqlens available for random tests. This provides a reproducible baseline to measure latency and throughput for batch prefill scenarios, informing optimization priorities. Minor CI/code quality improvements were applied (lint/ruff/black) to ensure CI readiness. No high-severity bugs fixed this month; the focus was on enabling measurement capabilities and improving stability.