Multi-GPU in Torch

[lukeyeager]

In Caffe, all the multi-GPU work has to be done on their side. You just pass --gpus 0,1 as a command line argument to Caffe, and you're running on 2 GPUs like magic.

For Torch, this will require writing some non-trivial lua code for communication between the GPUs (e.g. torch/cutorch#42 (comment)).

[sbodenstein]

How about using fbcunn? (https://github.com/facebook/fbcunn)