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confit.utils.random

set_seed [source]

Set seed values for random generators. If used as a context, restore the random state used before entering the context.

Parameters

PARAMETER DESCRIPTION
seed

Value used as a seed.
cuda

Saves the cuda random states too

TYPE: Optional[bool] DEFAULT: None

Source code in confit/utils/random.py 
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def __init__(self, seed, cuda: Optional[bool] = None):
    """
    Set seed values for random generators.
    If used as a context, restore the random state
    used before entering the context.

    Parameters
    ----------
    seed: int
        Value used as a seed.
    cuda: bool
        Saves the cuda random states too
    """
    # if seed is True:
    #     seed = random.randint(1, 2**16)
    seed = random.randint(1, 2**16) if seed is True else seed
    self.state = get_random_generator_state(cuda)
    if seed is not None:
        random.seed(seed)
        try:
            import torch

            torch.manual_seed(seed)
            if cuda or (
                cuda is None and torch.cuda.is_available()
            ):  # pragma: no cover
                torch.cuda.manual_seed(seed)
                torch.cuda.manual_seed_all(seed)
        except ImportError:  # pragma: no cover
            pass
        try:
            import numpy

            numpy.random.seed(seed)
        except ImportError:  # pragma: no cover
            pass

get_random_generator_state [source]

Get the torch, numpy and random random generator state.

Parameters

PARAMETER DESCRIPTION
cuda

Saves the cuda random states too

DEFAULT: None

RETURNS DESCRIPTION
RandomGeneratorState
Source code in confit/utils/random.py 
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def get_random_generator_state(cuda=None):
    """
    Get the `torch`, `numpy` and `random` random generator state.
    Parameters
    ----------
    cuda: bool
        Saves the cuda random states too

    Returns
    -------
    RandomGeneratorState
    """
    torch_state = torch_cuda_state = numpy_state = None
    random_state = random.getstate()
    try:
        import torch

        torch_state = torch.random.get_rng_state()
        if cuda or (cuda is None and torch.cuda.is_available()):  # pragma: no cover
            torch_cuda_state = torch.cuda.get_rng_state_all()

    except ImportError:  # pragma: no cover
        pass
    try:
        import numpy

        numpy_state = numpy.random.get_state()
    except ImportError:  # pragma: no cover
        pass
    return RandomGeneratorState(
        random_state,
        torch_state,
        numpy_state,
        torch_cuda_state,
    )

set_random_generator_state [source]

Set the torch, numpy and random random generator state.

Parameters

PARAMETER DESCRIPTION
state

Source code in confit/utils/random.py 
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def set_random_generator_state(state):
    """
    Set the `torch`, `numpy` and `random` random generator state.
    Parameters
    ----------
    state: RandomGeneratorState
    """
    random.setstate(state.random)
    if state.torch is not None:
        import torch

        torch.random.set_rng_state(state.torch)
        if (
            state.torch_cuda is not None
            and torch.cuda.is_available()
            and len(state.torch_cuda) == torch.cuda.device_count()
        ):  # pragma: no cover
            torch.cuda.set_rng_state_all(state.torch_cuda)
    if state.numpy is not None:
        import numpy

        numpy.random.set_state(state.numpy)