Jetson TX2 安装tensorflow

在Jetson TX2上安装tensorflow，须要在源码编译，至少我看到如今的教程都是在源码上编译，编译的时间会好久．　

源码编译安装tensorflow能够参考我另一个教程，这里主要说一些注意要项．

---

bazel和tensorflow

bazel 和tensorflow的版本注意不要过高，我这里就是bazel和tensorflow的版本选的过高，致使安装完出现问题，虽然不知道是否是依赖没有打完整的缘故，可是在这里仍是建议选择低一些的版本．

我这边选择的是bazel-5.4，tensorflow1.3

---

内存空间不足

网上说编译tensorflow可能会出现内存空间不够用的状况，因此须要作一个交换文件，可是实际上我并无碰到，可是仍是记录一下

＃Create an 8GB swapfile
fallocate -l 8G swapfile
＃Change permission of the swapfile
chmod 600 swapfile
＃Create swap area
mkswap swapfile
＃Activate the swap area
sudo swapon swapfile
# deactive the swap are
sudo swapoff swapfile
＃Confirm swap area being used
swapon -s

---

修改tensorflow/stream_executor/cuda/cuda_gpu_executor.cc

在tensorflow/stream_executor/cuda/cuda_gpu_executor.cc中找到static int TryToReadNumaNode(conststring &pci_bus_id,intdevice_ordinal)这个函数，在最开始就添加一下内容

LOG(INFO) << "ARM has no NUMA node, hardcoding to return zero";
return 0;

---

计算能力

在执行./configure的时候，若是要用到cuda会让你填Cuda compute capabilities，记得Jetson TX2的Cuda compute capabilities是6.2

---

Eigen错误

external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:359:55: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:360:55: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
pstore(py, psub(pcj.pmul(pc,yi),pm.pmul(ps,xi))); 
^ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:360:55: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:374:56: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
pstoreu(px, padd(pm.pmul(pc,xi),pcj.pmul(ps,yi))); 
^ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:374:56: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:375:69: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
pstoreu(px+PacketSize, padd(pm.pmul(pc,xi1),pcj.pmul(ps,yi1))); 
^ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:375:69: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:376:56: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
pstore (py, psub(pcj.pmul(pc,yi),pm.pmul(ps,xi))); 
^ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:376:56: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:377:69: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
pstore (py+PacketSize, psub(pcj.pmul(pc,yi1),pm.pmul(ps,xi1))); 
^ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:377:69: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:385:66: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
pstoreu(x+peelingEnd, padd(pm.pmul(pc,xi),pcj.pmul(ps,yi))); 
^ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:385:66: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:386:66: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
pstore (y+peelingEnd, psub(pcj.pmul(pc,yi),pm.pmul(ps,xi))); 
^ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:386:66: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:415:53: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
pstore(px, padd(pm.pmul(pc,xi),pcj.pmul(ps,yi))); 
^ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:415:53: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
external/eigen_archive/Eigen/src/Jacobi/Jacobi.h:416:53: error: ‘struct Eigen::internal::conj_helper<__vector(4) __builtin_neon_sf, Eigen::internal::Packet2cf, false, false>’ has no member named ‘pmul’ 
pstore(py, psub(pcj.pmul(pc,yi),pm.pmul(ps,xi)));

这些错误是eigen的arm部分有问题，解决方法： https://github.com/tensorflow/tensorflow/issues/9697

https://github.com/samjabrahams/tensorflow-on-raspberry-pi/issues/101

https://bitbucket.org/eigen/eigen/commits/d781c1de9834/

能够手工修改下，或者去下一个上述对arm修改过的3.3版本的Eigen去替换掉 ~/.cache/bazel/_bazel_ubuntu/5a48b4b8cc5de8b183f660553d84cc0b/external/eigen_archive/Eigen（那一长串的目录具体看你本身的）下的Eigen文件夹（下载地址: ）

手工修改方法是将tensorflow/workspace.bzl文件中的

native.new_http_archive(
    name = "eigen_archive",
    urls = [
        "http://mirror.bazel.build/bitbucket.org/eigen/eigen/get/f3a22f35b044.tar.gz",
        "https://bitbucket.org/eigen/eigen/get/f3a22f35b044.tar.gz",
    ],
    sha256 = "ca7beac153d4059c02c8fc59816c82d54ea47fe58365e8aded4082ded0b820c4",
    strip_prefix = "eigen-eigen-f3a22f35b044",
    build_file = str(Label("//third_party:eigen.BUILD")),
)

替换成

native.new_http_archive(
      name = "eigen_archive",
      urls = [
          "http://mirror.bazel.build/bitbucket.org/eigen/eigen/get/d781c1de9834.tar.gz",
          "https://bitbucket.org/eigen/eigen/get/d781c1de9834.tar.gz",
      ],
      sha256 = "a34b208da6ec18fa8da963369e166e4a368612c14d956dd2f9d7072904675d9b",
      strip_prefix = "eigen-eigen-d781c1de9834",
      build_file = str(Label("//third_party:eigen.BUILD")),
  )

---

GL头文件问题

Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/opengl.cpp.o
In file included from /home/ubuntu/build/opencv/modules/core/src/opengl.cpp:50:0:
/usr/local/cuda/include/cuda_gl_interop.h:64:2: error: #error Please include the appropriate gl headers before including cuda_gl_interop.h
 #error Please include the appropriate gl headers before including cuda_gl_interop.h
  ^
make[2]: *** [modules/core/CMakeFiles/opencv_core.dir/src/opengl.cpp.o] Error 1
make[1]: *** [modules/core/CMakeFiles/opencv_core.dir/all] Error 2
make: *** [all] Error 2

注释/usr/local/cuda/include/cuda_gl_interop.h

#ifndef GL_VERSION
#error Please include the appropriate gl headers before including cuda_gl_interop.h
#endif
#else