1.Tried loading libnccl.so.1 but got error ～/torch/install/share/lua/5.1/nccl/ffi.lua:192: libnccl.so.1: cannot open shared object file: No such file or directory？
解决：$ git clone https://github.com/NVIDIA/nccl.git
$ cd nccl
$ sudo make install -j4
$ sudo ldconfig
2.torch/install/share/lua/5.1/rnnlib/cudnnutils.lua:13: You must have the torch Cudnn bindings？
解决：
$ git clone https://github.com/soumith/cudnn.torch
$ cd cudnn.torch
$ git checkout origin/R7
$ luarocks make cudnn-scm-1.rockspec