火炬安装错误“发现不合适的版本5.5，但要求至少为6.5”

Question

我在Ubuntu 14.04中安装火炬使用以下命令，我在./install.sh之后收到错误。

$ git clone https://github.com/torch/distro.git ~/torch --recursive
$ cd ~/torch; bash install-deps;
$ ./install.sh

错误：

Building on 8 cores
-- Found Torch7 in /home/username/torch/install
CMake Error at /usr/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:108 (message):
  Could NOT find CUDA: Found unsuitable version "5.5", but required is at
  least "6.5" (found /usr)
Call Stack (most recent call first):
  /usr/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:313 (_FPHSA_FAILURE_MESSAGE)
  /home/username/torch/install/share/cmake/torch/FindCUDA.cmake:1009 (find_package_handle_standard_args)
  CMakeLists.txt:7 (FIND_PACKAGE)

-- Configuring incomplete, errors occurred!
See also "/home/username/torch/extra/cutorch/build/CMakeFiles/CMakeOutput.log".

Error: Build error: Failed building.