Ubuntu安装Torch

Torch简介

Torch是一个广泛支持机器学习算法的科学计算框架，由于采用简单而快速的脚本语言LuaJIT和一个底层的C/CUDA实现，Torch易于使用且高效。

Torch安装

首先，值得注意的是，最新版的Torch支持Ubuntu，Fedora20，Fedora22，Centos7。但不支持Fedora21，Centos6。

参考官网安装流程安装，如下所示，

# in a terminal, run the commands
git clone https://github.com/torch/distro.git ~/torch --recursive
cd ~/torch; bash install-deps;
./install.sh

在执行

bash install-deps

安装依赖时并未出错，但执行

./install.sh

时会出一些错误，见下面。

Torch安装问题汇总

错误1

错误类似于：

nvcc error : '***' died due to signal 2

解决方案：

sudo ./install.sh

错误2

Error: Build error: Failed building.
Updating manifest for /root/torch/install/lib/luarocks/rocks
fftw3 scm-1 is now built and installed in /root/torch/install/ (license: BSD)

错误3

Error: Failed installing dependency: https://raw.githubusercontent.com/rocks-moonscript-org/moonrocks-mirror/master/luacrypto-0.3.2-1.src.rock - Could not find header file for OPENSSL
No file openssl/evp.h in /usr/local/include
No file openssl/evp.h in /usr/include
You may have to install OPENSSL in your system and/or pass OPENSSL_DIR or OPENSSL_INCDIR to the luarocks command.
Example: luarocks install luacrypto OPENSSL_DIR=/usr/local

参照Problem with Torch #86，执行

sudo apt-get install -y libssl-dev

安装libssl-dev，之后重新安装Torch即可。

错误4

提示缺少依赖lbase64 ，luacrypto，uuid 等，可直接执行

luarocks install missed-package

解决。

参考

Ubuntu 14.04 64 bit+ Torch 7 + CUDA7安装配置