{
  "adapter_semantics": {
    "block_token_counts": "full blocks use block_size tokens; final partial block uses input_length % block_size, or block_size when zero",
    "chat_id": "session_id",
    "hash_ids": "block_hash_ids joined by |",
    "input_length": "num_prefill_tokens",
    "output_length": "num_decode_tokens",
    "timestamp": "arrived_at"
  },
  "block_size": 16,
  "csv_fields": [
    "arrived_at",
    "num_prefill_tokens",
    "num_decode_tokens",
    "session_id",
    "block_hash_ids"
  ],
  "fail_on_overflow": true,
  "first_timestamp": 0.0,
  "fixture_name": "coder_2000",
  "frontier_csv": "traces/fixtures/coder_2000/frontier.csv",
  "generated_by": "tools/qwen_to_frontier.py",
  "input_jsonl": "/home/gahow/phd/qwen-bailian-usagetraces-anon/qwen_coder_blksz_16.jsonl",
  "last_timestamp": 451.684,
  "limit": 2000,
  "max_input_length": 17972,
  "max_output_length": 10768,
  "max_tokens": 32768,
  "max_total_tokens": 21318,
  "overflow_count": 0,
  "partial_final_block_rows": 1879,
  "row_count": 2000,
  "sidecar_fields": [
    "request_id",
    "chat_id",
    "parent_chat_id",
    "turn",
    "type",
    "timestamp",
    "input_length",
    "output_length",
    "hash_ids",
    "block_token_counts"
  ],
  "sidecar_jsonl": "traces/fixtures/coder_2000/sidecar.jsonl",
  "source_jsonl": "traces/fixtures/coder_2000/source.jsonl",
  "timestamp_monotonic": true
}