'cunn' not found

[dyaish]

Hi,
i get this error S:

qlua: EX2_MNIST_Convnet_CPU.lua:2: module 'cunn' not found:
no field package.preload['cunn']
no file '/home/daniel/.luarocks/share/lua/5.1/cunn.lua'
no file '/home/daniel/.luarocks/share/lua/5.1/cunn/init.lua'
no file '/home/daniel/torch/install/share/lua/5.1/cunn.lua'
no file '/home/daniel/torch/install/share/lua/5.1/cunn/init.lua'
no file './cunn.lua'
no file '/home/daniel/torch/install/share/luajit-2.1.0-beta1/cunn.lua'
no file '/usr/local/share/lua/5.1/cunn.lua'
no file '/usr/local/share/lua/5.1/cunn/init.lua'
no file '/home/daniel/torch/install/lib/cunn.so'
no file '/home/daniel/.luarocks/lib/lua/5.1/cunn.so'
no file '/home/daniel/torch/install/lib/lua/5.1/cunn.so'
no file './cunn.so'
no file '/usr/local/lib/lua/5.1/cunn.so'
no file '/usr/local/lib/lua/5.1/loadall.so'
stack traceback:
[C]: at 0x7f5ced22ff50
[C]: in function 'require'
EX2_MNIST_Convnet_CPU.lua:2: in main chunk