torch.cuda.comm.broadcast_coalesced#
- torch.cuda.comm.broadcast_coalesced(tensors, devices, buffer_size=10485760)[source]#
Broadcast a sequence of tensors to the specified GPUs.
Small tensors are first coalesced into a buffer to reduce the number of synchronizations.
- Parameters
tensors (sequence) – tensors to broadcast. Must be on the same device, either CPU or GPU.
devices (Iterable[torch.device, str or int]) – an iterable of GPU devices, among which to broadcast.
buffer_size (int) – maximum size of the buffer used for coalescing
- Returns
A tuple containing copies of
tensor, placed ondevices.