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# torch.cuda.comm.broadcast

torch.cuda.comm.broadcast(tensor, devices=None, *, out=None)

  Broadcasts a tensor to specified GPU devices.

  Parameters:

    - tensor (Tensor) – tensor to broadcast. Can be on CPU or GPU.

    - devices (Iterable[torch.device, str or int], optional) – an iterable of GPU devices, among which to broadcast.

    - out (Sequence[Tensor], optional, keyword-only) – the GPU tensors to store output results.

  Note

  Exactly one of `devices` and `out` must be specified.

  Returns:

    - If `devices` is specified,

        a tuple containing copies of `tensor`, placed on `devices`.

    - If `out` is specified,

        a tuple containing `out` tensors, each containing a copy of `tensor`.

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