在尝试使用Bazel进行TensorFlow编译后尝试执行Illegal instruction时，我尝试运行Image Recognition with the C++ API tutorial并出现label_image错误。
我做了以下步骤：
# After installing the bazel dependencies, I get the bazel installer
$ mkdir ~/bazel-download && cd ~/bazel-download
$ wget https://github.com/bazelbuild/bazel/releases/download/0.3.0/bazel-0.3.0-installer-linux-x86_64.sh -O bazel-0.3.0-installer-linux-x86_64.sh
$ chmod +x bazel-0.3.0-installer-linux-x86_64.sh
# Install bazel in ~/bin
$ ./bazel-0.3.0-installer-linux-x86_64.sh --user
# Add bazel to the path, if not done already
$ printf '\nexport PATH=$PATH:"~/bin/"\n' >> ~/.bashrc
# Before this, I create a new terminal to refresh the bash PATH
$ mkdir ~/inceptionV3 && cd ~/inceptionV3
# Get a stable version of TensorFlow
$ git clone https://github.com/tensorflow/tensorflow -b r0.9
$ cd tensorflow
# Add the InceptionV3 data/models for the C++ api
$ wget https://storage.googleapis.com/download.tensorflow.org/models/inception_dec_2015.zip -O tensorflow/examples/label_image/data/inception_dec_2015.zip
$ unzip tensorflow/examples/label_image/data/inception_dec_2015.zip -d tensorflow/examples/label_image/data/
# Configure tensorflow: set python path, no Google Cloud Platform support, no GPU support
$ ./configure
# Run bazel build with the allocated resources
$ bazel build -c opt --copt=-mavx --verbose_failures --local_resources 2048,2.0,1.0 -j 1 tensorflow/examples/label_image/...
# -- Here's the last log output from bazel --
INFO: From Compiling tensorflow/core/common_runtime/function.cc:
tensorflow/core/common_runtime/function.cc: In lambda function:
tensorflow/core/common_runtime/function.cc:392:60: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
} else if (rets->size() != ctx->num_outputs()) {
^
INFO: Elapsed time: 6929.927s, Critical Path: 69.23s
# Look like there's no error during the compilation, but now, if I run the generated executable:
$ ./bazel-bin/tensorflow/examples/label_image/label_image
Illegal instruction
另外，我在Docker上使用Ubuntu 14.04.4 LTS x86_64容器（gcc / g ++版本为4.8.4）。
我尝试使用其他设置运行此操作，例如使用apt-get install for bazel，但在使用新编译运行可执行文件后仍然出现Illegal instruction错误。
话虽这么说，教程的Python部分工作正常（使用python 2.7.6）。知道如何解决C ++ API的问题吗？
edit1 :(添加更多关于cpu的信息） 这是我从/proc/cpuinfo获得的输出。
edit2 :(试图调试tensorflow） 使用此命令编译：
$ bazel build -c dbg --strip=always --copt=-mavx --verbose_failures --local_resources 2048,2.0,1.0 -j 1 tensorflow/examples/label_image/...
我尝试使用gdb进行调试：
$ -q bazel-bin/tensorflow/examples/label_image/label_image
Reading symbols from bazel-bin/tensorflow/examples/label_image/label_image...(no debugging symbols found)...done.
(gdb) set disable-randomization off
(gdb) run
Starting program: /root/.cache/bazel/_bazel_root/b54d699ba1afcab684f4628c78701dbe/execroot/tensorflow/bazel-out/local-dbg/bin/tensorflow/examples/label_image/label_image
During startup program terminated with signal SIGILL, Illegal instruction.
(gdb) backtrace
No stack.
(gdb) handle SIGILL nostop
Signal Stop Print Pass to program Description
SIGILL No Yes Yes Illegal instruction
(gdb) run
Starting program: /root/.cache/bazel/_bazel_root/b54d699ba1afcab684f4628c78701dbe/execroot/tensorflow/bazel-out/local-dbg/bin/tensorflow/examples/label_image/label_image
During startup program terminated with signal SIGILL, Illegal instruction.
(gdb) backtrace
No stack.
(gdb) info files
Symbols from "/root/.cache/bazel/_bazel_root/b54d699ba1afcab684f4628c78701dbe/execroot/tensorflow/bazel-out/local-dbg/bin/tensorflow/examples/label_image/label_image".
Local exec file:
`/root/.cache/bazel/_bazel_root/b54d699ba1afcab684f4628c78701dbe/execroot/tensorflow/bazel-out/local-dbg/bin/tensorflow/examples/label_image/label_image', file type elf64-x86-64.
Entry point: 0x434b10
0x0000000000400270 - 0x000000000040028c is .interp
0x000000000040028c - 0x00000000004002ac is .note.ABI-tag
0x00000000004002ac - 0x00000000004002cc is .note.gnu.build-id
0x00000000004002d0 - 0x0000000000400380 is .gnu.hash
0x0000000000400380 - 0x00000000004027e0 is .dynsym
0x00000000004027e0 - 0x0000000000404667 is .dynstr
0x0000000000404668 - 0x0000000000404970 is .gnu.version
0x0000000000404970 - 0x0000000000404b70 is .gnu.version_r
0x0000000000404b70 - 0x0000000000431360 is .rela.dyn
0x0000000000431360 - 0x00000000004334a8 is .rela.plt
0x00000000004334a8 - 0x00000000004334c2 is .init
0x00000000004334d0 - 0x0000000000434b10 is .plt
0x0000000000434b10 - 0x00000000027cfe2f is .text
0x00000000027cfe30 - 0x00000000027cfe39 is .fini
0x00000000027cfe40 - 0x0000000003890ed0 is .rodata
0x0000000003890ed0 - 0x0000000003acc1ec is .eh_frame_hdr
0x0000000003acc1f0 - 0x000000000441fc2c is .eh_frame
0x000000000441fc2c - 0x000000000444474f is .gcc_except_table
0x0000000004644dd0 - 0x0000000004644de0 is .tdata
0x0000000004644de0 - 0x0000000004644df8 is .tbss
0x0000000004644de0 - 0x0000000004645a70 is .init_array
0x0000000004645a70 - 0x0000000004645a78 is .fini_array
0x0000000004645a78 - 0x0000000004645a80 is .jcr
0x0000000004645a80 - 0x00000000046a5d50 is .data.rel.ro
0x00000000046a5d50 - 0x00000000046a5f90 is .dynamic
0x00000000046a5f90 - 0x00000000046a6000 is .got
0x00000000046a6000 - 0x00000000046a6b30 is .got.plt
0x00000000046a6b40 - 0x00000000046a70d0 is .data
0x00000000046a70e0 - 0x00000000046aae18 is .bss
(gdb) break main
Breakpoint 1 at 0x436cc0
(gdb) run
Starting program: /root/.cache/bazel/_bazel_root/b54d699ba1afcab684f4628c78701dbe/execroot/tensorflow/bazel-out/local-dbg/bin/tensorflow/examples/label_image/label_image
During startup program terminated with signal SIGILL, Illegal instruction.
(gdb) backtrace
No stack.
到目前为止，由于Illegal instruction错误是由SIGILL信号引起的，因此我猜我当前的架构与生成的机器代码不匹配。但是，我不确定如何处理这个特定的问题。
答案 0 :(得分：0)
经过几次搜索后，似乎--copt=-mavx实际上是一个传递给gcc的参数，以优化OSX机器上的架构as pointed over here。因此，我的linux＆＃34; PC＆＃34;无法正常工作。机。