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         0.217       0.168     1.30x      39.3%
      32         0.168       0.126     1.33x      39.7%
      64         0.250       0.202     1.24x      38.6%

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