torch.empty_strided

torch.empty_strided(size, stride, *, dtype=None, layout=None, device=None, requires_grad=False, pin_memory=False) → Tensor

Creates a tensor with the specified size and stride and filled with undefined data.

Warning

If the constructed tensor is “overlapped” (with multiple indices referring to the same element in memory) its behavior is undefined.

Parameters:

• size (tuple of python:int) – the shape of the output tensor

• stride (tuple of python:int) – the strides of the output tensor

Keyword Arguments:

• dtype (torch.dtype, optional) – the desired data type of returned tensor. Default: if None, uses a global default (see torch.set_default_tensor_type()).

• layout (torch.layout, optional) – the desired layout of returned Tensor. Default: torch.strided.

• device (torch.device, optional) – the desired device of returned tensor. Default: if None, uses the current device for the default tensor type (see torch.set_default_tensor_type()). device will be the CPU for CPU tensor types and the current CUDA device for CUDA tensor types.

• requires_grad (bool, optional) – If autograd should record operations on the returned tensor. Default: False.

• pin_memory (bool, optional) – If set, returned tensor would be allocated in the pinned memory. Works only for CPU tensors. Default: False.

Example:

>>> a = torch.empty_strided((2, 3), (1, 2))
>>> a
tensor([[8.9683e-44, 4.4842e-44, 5.1239e+07],
        [0.0000e+00, 0.0000e+00, 3.0705e-41]])
>>> a.stride()
(1, 2)
>>> a.size()
torch.Size([2, 3])