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.

• 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 = True

  • Use single precision for the whole circuit.

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

  • Set how cryptographic parameters are selected.

• jit: bool = False

  • Enable JIT compilation.

• 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