concrete.ml.torch.compile.md

module concrete.ml.torch.compile

torch compilation function.

Global Variables

• MAX_BITWIDTH_BACKWARD_COMPATIBLE

• OPSET_VERSION_FOR_ONNX_EXPORT

---

function convert_torch_tensor_or_numpy_array_to_numpy_array

convert_torch_tensor_or_numpy_array_to_numpy_array(
    torch_tensor_or_numpy_array: Union[Tensor, ndarray]
) → ndarray

Convert a torch tensor or a numpy array to a numpy array.

Args:

• torch_tensor_or_numpy_array (Tensor): the value that is either a torch tensor or a numpy array.

Returns:

• numpy.ndarray: the value converted to a numpy array.

---

function build_quantized_module

build_quantized_module(
    model: Union[Module, ModelProto],
    torch_inputset: Union[Tensor, ndarray, Tuple[Union[Tensor, ndarray], ]],
    import_qat: bool = False,
    n_bits=8,
    rounding_threshold_bits: Optional[int] = None
) → QuantizedModule

Build a quantized module from a Torch or ONNX model.

Take a model in torch or ONNX, turn it to numpy, quantize its inputs / weights / outputs and retrieve the associated quantized module.

Args:

• model (Union[torch.nn.Module, onnx.ModelProto]): The model to quantize, either in torch or in ONNX.

• torch_inputset (Dataset): the calibration input-set, can contain either torch tensors or numpy.ndarray

• import_qat (bool): Flag to signal that the network being imported contains quantizers in in its computation graph and that Concrete ML should not re-quantize it

• n_bits: the number of bits for the quantization

• rounding_threshold_bits (int): if not None, every accumulators in the model are rounded down to the given bits of precision

Returns:

• QuantizedModule: The resulting QuantizedModule.

---

function compile_torch_model

compile_torch_model(
    torch_model: Module,
    torch_inputset: Union[Tensor, ndarray, Tuple[Union[Tensor, ndarray], ]],
    import_qat: bool = False,
    configuration: Optional[Configuration] = None,
    artifacts: Optional[DebugArtifacts] = None,
    show_mlir: bool = False,
    n_bits=8,
    rounding_threshold_bits: Optional[int] = None,
    p_error: Optional[float] = None,
    global_p_error: Optional[float] = None,
    verbose: bool = False
) → QuantizedModule

Compile a torch module into an FHE equivalent.

Take a model in torch, turn it to numpy, quantize its inputs / weights / outputs and finally compile it with Concrete

Args:

• torch_model (torch.nn.Module): the model to quantize

• torch_inputset (Dataset): the calibration input-set, can contain either torch tensors or numpy.ndarray.

• import_qat (bool): Set to True to import a network that contains quantizers and was trained using quantization aware training

• configuration (Configuration): Configuration object to use during compilation

• artifacts (DebugArtifacts): Artifacts object to fill during compilation

• show_mlir (bool): if set, the MLIR produced by the converter and which is going to be sent to the compiler backend is shown on the screen, e.g., for debugging or demo

• n_bits: the number of bits for the quantization

• rounding_threshold_bits (int): if not None, every accumulators in the model are rounded down to the given bits of precision

• p_error (Optional[float]): probability of error of a single PBS

• global_p_error (Optional[float]): probability of error of the full circuit. In FHE simulation global_p_error is set to 0

• verbose (bool): whether to show compilation information

Returns:

• QuantizedModule: The resulting compiled QuantizedModule.

---

function compile_onnx_model

compile_onnx_model(
    onnx_model: ModelProto,
    torch_inputset: Union[Tensor, ndarray, Tuple[Union[Tensor, ndarray], ]],
    import_qat: bool = False,
    configuration: Optional[Configuration] = None,
    artifacts: Optional[DebugArtifacts] = None,
    show_mlir: bool = False,
    n_bits=8,
    rounding_threshold_bits: Optional[int] = None,
    p_error: Optional[float] = None,
    global_p_error: Optional[float] = None,
    verbose: bool = False
) → QuantizedModule

Compile a torch module into an FHE equivalent.

Take a model in torch, turn it to numpy, quantize its inputs / weights / outputs and finally compile it with Concrete-Python

Args:

• onnx_model (onnx.ModelProto): the model to quantize

• torch_inputset (Dataset): the calibration input-set, can contain either torch tensors or numpy.ndarray.

• import_qat (bool): Flag to signal that the network being imported contains quantizers in in its computation graph and that Concrete ML should not re-quantize it.

• configuration (Configuration): Configuration object to use during compilation

• artifacts (DebugArtifacts): Artifacts object to fill during compilation

• show_mlir (bool): if set, the MLIR produced by the converter and which is going to be sent to the compiler backend is shown on the screen, e.g., for debugging or demo

• n_bits: the number of bits for the quantization

• rounding_threshold_bits (int): if not None, every accumulators in the model are rounded down to the given bits of precision

• p_error (Optional[float]): probability of error of a single PBS

• global_p_error (Optional[float]): probability of error of the full circuit. In FHE simulation global_p_error is set to 0

• verbose (bool): whether to show compilation information

Returns:

• QuantizedModule: The resulting compiled QuantizedModule.

---

function compile_brevitas_qat_model

compile_brevitas_qat_model(
    torch_model: Module,
    torch_inputset: Union[Tensor, ndarray, Tuple[Union[Tensor, ndarray], ]],
    n_bits: Optional[int, dict] = None,
    configuration: Optional[Configuration] = None,
    artifacts: Optional[DebugArtifacts] = None,
    show_mlir: bool = False,
    rounding_threshold_bits: Optional[int] = None,
    p_error: Optional[float] = None,
    global_p_error: Optional[float] = None,
    output_onnx_file: Union[Path, str] = None,
    verbose: bool = False
) → QuantizedModule

Compile a Brevitas Quantization Aware Training model.

The torch_model parameter is a subclass of torch.nn.Module that uses quantized operations from brevitas.qnn. The model is trained before calling this function. This function compiles the trained model to FHE.

Args:

• torch_model (torch.nn.Module): the model to quantize

• torch_inputset (Dataset): the calibration input-set, can contain either torch tensors or numpy.ndarray.

• n_bits (Optional[Union[int, dict]): the number of bits for the quantization. By default, for most models, a value of None should be given, which instructs Concrete ML to use the bit-widths configured using Brevitas quantization options. For some networks, that perform a non-linear operation on an input on an output, if None is given, a default value of 8 bits is used for the input/output quantization. For such models the user can also specify a dictionary with model_inputs/model_outputs keys to override the 8-bit default or a single integer for both values.

• configuration (Configuration): Configuration object to use during compilation

• artifacts (DebugArtifacts): Artifacts object to fill during compilation

• show_mlir (bool): if set, the MLIR produced by the converter and which is going to be sent to the compiler backend is shown on the screen, e.g., for debugging or demo

• rounding_threshold_bits (int): if not None, every accumulators in the model are rounded down to the given bits of precision

• p_error (Optional[float]): probability of error of a single PBS

• global_p_error (Optional[float]): probability of error of the full circuit. In FHE simulation global_p_error is set to 0

• output_onnx_file (str): temporary file to store ONNX model. If None a temporary file is generated

• verbose (bool): whether to show compilation information

Returns:

• QuantizedModule: The resulting compiled QuantizedModule.