TASK 1 — KV CACHE BENCHMARK
========================================

has_generate_cached=True
memory_profile=N/A (CPU/MPS)

 src_len   standard(s)   cached(s)   speedup   encoder%
      16         0.449       0.313     1.43x      36.2%
      32         0.391       0.290     1.35x      34.9%
      64         0.641       0.465     1.38x      35.6%

Saved graphs:
  - task1_time_comparison.png
  - task1_speedup.png
  - task1_encoder_cost.png