{
  "scheme": "nf4",
  "quantizer": "bitsandbytes",
  "compute_dtype": "bfloat16",
  "double_quant": true,
  "min_params_to_quantize": 4000000,
  "modules_quantized": 236,
  "source_repo": "robometer/Robometer-4B",
  "source_revision": "beef63bc914c5c189329d49c6d712d96d632aa34",
  "transformers_pin": "4.57.1",
  "robometer_pin": "a669dffc241d7d76bec12f36efd4084d914d017c",
  "build_tool": "tools/build_robometer_nf4_checkpoint.py",
  "load_path": "meta-device + Params4bit.from_prequantized (no bf16 materialization, no requantize)",
  "determinism": "math SDP + use_deterministic_algorithms + CUBLAS_WORKSPACE_CONFIG=:4096:8 + cudnn.allow_tf32=False",
  "verified": "bit-identical to bf16+quantize path (same-process max|delta|=0; 4-bit dequant round-trip=0)",
  "resident_vram_gb": 3.32,
  "adr": "ADR-0057"
}