将所含包解压缩到/data1下：
sh cuda_7.0.28_linux.run --extract=/data1/
利用安装包自带的参数，你会发现惊喜
sh cuda-linux64-rel-7.0.28-19326674.run --help
cuda多版本切换详细版
cudnn 下载链接 https://developer.nvidia.com/rdp/cudnn-archive
cuda 下载链接https://developer.nvidia.com/cuda-toolkit-70
各种显卡计算力一览
需要设置环境变量：设置环境变量方法
mysql:删除过多重复的项：
delete a0 from yearbook_result_result_copy_10 as a0,(select count(*) as num,teacher_id,id from yearbook_result_result_copy_10 group by teacher_id having count(teacher_id)>3) as a1 where a0.id=a1.id;：
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