nvidia.dali.fn.random.uniform

nvidia.dali.fn.random.uniform(*inputs, **kwargs)

Generates random numbers following a uniform distribution.

It can be configured to produce a continuous uniform distribution in the range [min, max), or a discrete uniform distribution where any of the specified values [v0, v1, …, vn] occur with equal probability.

The shape of the generated data can be either specified explicitly with a shape argument, or chosen to match the shape of the input, if provided. If none are present, a scalar is generated.

Supported backends

• ‘cpu’

• ‘gpu’

Parameters

input (TensorList, optional) – Input to the operator.

Keyword Arguments

• bytes_per_sample_hint (int or list of int, optional, default = [0]) –

  Output size hint, in bytes per sample.

  If specified, the operator’s outputs residing in GPU or page-locked host memory will be preallocated to accommodate a batch of samples of this size.

• dtype (nvidia.dali.types.DALIDataType, optional) –

  Output data type.

  Note

  The generated numbers are converted to the output data type, rounding and clamping if necessary.

• preserve (bool, optional, default = False) – Prevents the operator from being removed from the graph even if its outputs are not used.

• range (float or list of float or TensorList of float, optional, default = [-1.0, 1.0]) –

  Range [min, max) of a continuous uniform distribution.

  This argument is mutually exclusive with values.

  Warning

  When specifying an integer type as dtype, the generated numbers can go outside the specified range, due to rounding.

• seed (int, optional, default = -1) –

  Random seed.

  If not provided, it will be populated based on the global seed of the pipeline.

• shape (int or list of int or TensorList of int, optional) – Shape of the output data.

• values (float or list of float or TensorList of float, optional) –

  The discrete values [v0, v1, …, vn] produced by a discrete uniform distribution.

  This argument is mutually exclusive with range.