have strange problem on installing NCCL

I fellow the installing guide: https://docs.nvidia.com/deeplearning/sdk/nccl-install-guide/index.html#down

sudo dpkg -i nccl-repo-ubuntu1604-2.0.5-ga-cuda8.0_2-1_amd64.deb
sudo apt update
sudo apt install libnccl2 libnccl-dev

they all be executed successfully.
But there is nothing in /etc/apt/sources.list.d folder.

when I excute:

sudo apt install libnccl2 libnccl-dev

I got :

Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libnccl2
E: Unable to locate package libnccl-dev

Can anyone help me?
Thank you very much!!!

instead of:

sudo apt install libnccl2 libnccl-dev

try:

sudo apt-get install libnccl2=2.0.5-2+cuda8.0 libnccl-dev=2.0.5-2+cuda8.0

If that doesn’t work, download the nccl local deb installer again, and repeat the instructions here:

https://docs.nvidia.com/deeplearning/sdk/nccl-install-guide/index.html