TASK 1 — KV CACHE BENCHMARK
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has_generate_cached=True
memory_profile=N/A (CPU/MPS)

 src_len   standard(s)   cached(s)   speedup   encoder%
      16         0.855       0.549     1.56x      39.2%
      32         0.679       0.499     1.36x      41.2%
      64         1.069       0.732     1.46x      40.0%

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