Configure

Concrete can be customized using Configurations:

from concrete import fhe
import numpy as np

configuration = fhe.Configuration(p_error=0.01, dataflow_parallelize=True)

@fhe.compiler({"x": "encrypted"})
def f(x):
    return x + 42

inputset = range(10)
circuit = f.compile(inputset, configuration=configuration)

You can overwrite individual options as kwargs to the compile method:

from concrete import fhe
import numpy as np

@fhe.compiler({"x": "encrypted"})
def f(x):
    return x + 42

inputset = range(10)
circuit = f.compile(inputset, p_error=0.01, dataflow_parallelize=True)

Or you can combine both:

from concrete import fhe
import numpy as np

configuration = fhe.Configuration(p_error=0.01)

@fhe.compiler({"x": "encrypted"})
def f(x):
    return x + 42

inputset = range(10)
circuit = f.compile(inputset, configuration=configuration, loop_parallelize=True)

Additional kwargs to compile functions take higher precedence. So if you set the option in both configuration and compile methods, the value in the compile method will be used.

Options

  • show_graph: Optional[bool] = None

    • Print computation graph during compilation. True means always print, False means never print, None means print depending on verbose configuration below.

  • show_mlir: Optional[bool] = None

    • Print MLIR during compilation. True means always print, False means never print, None means print depending on verbose configuration below.

  • show_optimizer: Optional[bool] = None

    • Print optimizer output during compilation. True means always print, False means never print, None means print depending on verbose configuration below.

  • show_statistics: Optional[bool] = None

    • Print circuit statistics during compilation. True means always print, False means never print, None means print depending on verbose configuration below.

  • verbose: bool = False

    • Print details related to compilation.

  • dump_artifacts_on_unexpected_failures: bool = True

    • Export debugging artifacts automatically on compilation failures.

  • auto_adjust_rounders: bool = False

    • Adjust rounders automatically.

  • p_error: Optional[float] = None

    • Error probability for individual table lookups. If set, all table lookups will have the probability of a non-exact result smaller than the set value. See Exactness to learn more.

  • global_p_error: Optional[float] = None

    • Global error probability for the whole circuit. If set, the whole circuit will have the probability of a non-exact result smaller than the set value. See Exactness to learn more.

  • single_precision: bool = False

    • Use single precision for the whole circuit.

  • parameter_selection_strategy: (fhe.ParameterSelectionStrategy) = fhe.ParameterSelectionStrategy.MULTI

    • Set how cryptographic parameters are selected.

  • loop_parallelize: bool = True

    • Enable loop parallelization in the compiler.

  • dataflow_parallelize: bool = False

    • Enable dataflow parallelization in the compiler.

  • auto_parallelize: bool = False

    • Enable auto parallelization in the compiler.

  • enable_unsafe_features: bool = False

    • Enable unsafe features.

  • use_insecure_key_cache: bool = False (Unsafe)

    • Use the insecure key cache.

  • insecure_key_cache_location: Optional[Union[Path, str]] = None

    • Location of insecure key cache.

  • show_progress: bool = False,

    • Display a progress bar during circuit execution

  • progress_title: str = "",

    • Title of the progress bar

  • progress_tag: Union[bool, int] = False,

    • How many nested tag elements to display with the progress bar. True means all tag elements and False disables the display. 2 will display elmt1.elmt2

  • fhe_simulation: bool = False

    • Enable FHE simulation. Can be enabled later using circuit.enable_fhe_simulation().

  • fhe_execution: bool = True

    • Enable FHE execution. Can be enabled later using circuit.enable_fhe_execution().

  • compiler_debug_mode: bool = False,

    • Enable/disable debug mode of the compiler. This can show a lot of information, including passes and pattern rewrites.

  • compiler_verbose_mode: bool = False,

    • Enable/disable verbose mode of the compiler. This mainly shows logs from the compiler, and is less verbose than the debug mode.

  • comparison_strategy_preference: Optional[Union[ComparisonStrategy, str, List[Union[ComparisonStrategy, str]]]] = None

    • Specify preference for comparison strategies, can be a single strategy or an ordered list of strategies. See Comparisons to learn more.

  • bitwise_strategy_preference: Optional[Union[BitwiseStrategy, str, List[Union[BitwiseStrategy, str]]]] = None

    • Specify preference for bitwise strategies, can be a single strategy or an ordered list of strategies. See Bitwise to learn more.

  • shifts_with_promotion: bool = True,

    • Enable promotions in encrypted shifts instead of casting in runtime. See Bitwise#Shifts to learn more.

  • composable: bool = False,

    • Specify that the function must be composable with itself.

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