quantization_config.json

{
  "quant_method": "orbitquant",
  "weight_bits": 4,
  "activation_bits": 4,
  "rotation": "rpbh",
  "rotation_seed": 0,
  "block_size": "paper",
  "codebook": "lloyd_max",
  "codebook_dtype": "float32",
  "row_norm_dtype": "bfloat16",
  "activation_norm_dtype": "float32",
  "activation_eps": 1e-12,
  "weight_pack_dtype": "uint8",
  "target_policy": "z_image",
  "adaln_policy": "int4_rtn",
  "adaln_group_size": 64,
  "modules_to_not_convert": [],
  "modules_dtype_dict": {},
  "artifact_format_version": 1,
  "runtime_mode": "dequant_bf16",
  "activation_kernel_backend": "auto"
}