Installation on Anaconda

Hi,

I have trouble installing the py_torch bindings using anaconda. I’m using Ubuntu 14.04.3, and gcc 5.4.1 and cuda 8. Everythings works fine untill i try to import the warp bindings in python:

>>> from warpctc_pytorch import CTCLoss
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/sorson/anaconda3/lib/python3.6/site-packages/warpctc_pytorch/__init__.py", line 7, in <module>
    from ._warp_ctc import lib as _lib, ffi as _ffi
ImportError: /home/sorson/anaconda3/lib/python3.6/site-packages/torch/lib/../../../../libgomp.so.1: version `GOMP_4.0' not found (required by /home/sorson/warp-ctc/build/libwarpctc.so)

Output of installation:

sorson@phoebe:~/warp-ctc/build$ cmake ..
-- The C compiler identification is GNU 5.4.1
-- The CXX compiler identification is GNU 5.4.1
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Found CUDA: /usr/local/cuda-8.0 (found suitable version "8.0", minimum required is "6.5") 
-- cuda found TRUE
CMake Warning at CMakeLists.txt:48 (FIND_PACKAGE):
  By not providing "FindTorch.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Torch", but
  CMake did not find one.

  Could not find a package configuration file provided by "Torch" with any of
  the following names:

    TorchConfig.cmake
    torch-config.cmake

  Add the installation prefix of "Torch" to CMAKE_PREFIX_PATH or set
  "Torch_DIR" to a directory containing one of the above files.  If "Torch"
  provides a separate development package or SDK, be sure it has been
  installed.


-- Torch found Torch_DIR-NOTFOUND
-- Building shared library with GPU support
-- Configuring done
-- Generating done
-- Build files have been written to: /home/sorson/warp-ctc/build

sorson@phoebe:~/warp-ctc/build$ make
[ 25%] Building NVCC (Device) object CMakeFiles/warpctc.dir/src/./warpctc_generated_reduce.cu.o
[ 50%] Building NVCC (Device) object CMakeFiles/warpctc.dir/src/./warpctc_generated_ctc_entrypoint.cu.o
Scanning dependencies of target warpctc
Linking CXX shared library libwarpctc.so
[ 50%] Built target warpctc
Scanning dependencies of target test_cpu
[ 75%] Building CXX object CMakeFiles/test_cpu.dir/tests/test_cpu.cpp.o
Linking CXX executable test_cpu
[ 75%] Built target test_cpu
[100%] Building NVCC (Device) object CMakeFiles/test_gpu.dir/tests/./test_gpu_generated_test_gpu.cu.o
Scanning dependencies of target test_gpu
Linking CXX executable test_gpu
[100%] Built target test_gpu

sorson@phoebe:~/warp-ctc/pytorch_binding$ python setup.py install
generating build/_warp_ctc.c
regenerated: 'build/_warp_ctc.c'
running install
running build
running build_py
creating build/lib.linux-x86_64-3.6
creating build/lib.linux-x86_64-3.6/warpctc_pytorch
copying warpctc_pytorch/__init__.py -> build/lib.linux-x86_64-3.6/warpctc_pytorch
running build_ext
building 'warpctc_pytorch._warp_ctc' extension
creating build/temp.linux-x86_64-3.6
creating build/temp.linux-x86_64-3.6/build
creating build/temp.linux-x86_64-3.6/home
creating build/temp.linux-x86_64-3.6/home/sorson
creating build/temp.linux-x86_64-3.6/home/sorson/warp-ctc
creating build/temp.linux-x86_64-3.6/home/sorson/warp-ctc/pytorch_binding
creating build/temp.linux-x86_64-3.6/home/sorson/warp-ctc/pytorch_binding/src
gcc -pthread -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/home/sorson/anaconda3/lib/python3.6/site-packages/torch/utils/ffi/../../lib/include -I/home/sorson/anaconda3/lib/python3.6/site-packages/torch/utils/ffi/../../lib/include/TH -I/home/sorson/anaconda3/lib/python3.6/site-packages/torch/utils/ffi/../../lib/include/THC -I/usr/local/cuda/include -I/home/sorson/warp-ctc/include -I/home/sorson/anaconda3/include/python3.6m -c build/_warp_ctc.c -o build/temp.linux-x86_64-3.6/build/_warp_ctc.o -std=c++11 -fPIC -DWARPCTC_ENABLE_GPU
cc1: warning: command line option ‘-std=c++11’ is valid for C++/ObjC++ but not for C
gcc -pthread -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/home/sorson/anaconda3/lib/python3.6/site-packages/torch/utils/ffi/../../lib/include -I/home/sorson/anaconda3/lib/python3.6/site-packages/torch/utils/ffi/../../lib/include/TH -I/home/sorson/anaconda3/lib/python3.6/site-packages/torch/utils/ffi/../../lib/include/THC -I/usr/local/cuda/include -I/home/sorson/warp-ctc/include -I/home/sorson/anaconda3/include/python3.6m -c /home/sorson/warp-ctc/pytorch_binding/src/binding.cpp -o build/temp.linux-x86_64-3.6/home/sorson/warp-ctc/pytorch_binding/src/binding.o -std=c++11 -fPIC -DWARPCTC_ENABLE_GPU
cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
g++ -pthread -shared -L/home/sorson/anaconda3/lib -Wl,-rpath=/home/sorson/anaconda3/lib,--no-as-needed build/temp.linux-x86_64-3.6/build/_warp_ctc.o build/temp.linux-x86_64-3.6/home/sorson/warp-ctc/pytorch_binding/src/binding.o -L/home/sorson/warp-ctc/build -L/home/sorson/anaconda3/lib -Wl,--enable-new-dtags,-R/home/sorson/warp-ctc/build -lwarpctc -lpython3.6m -o build/lib.linux-x86_64-3.6/warpctc_pytorch/_warp_ctc.cpython-36m-x86_64-linux-gnu.so
running install_lib
copying build/lib.linux-x86_64-3.6/warpctc_pytorch/_warp_ctc.cpython-36m-x86_64-linux-gnu.so -> /home/sorson/anaconda3/lib/python3.6/site-packages/warpctc_pytorch
copying build/lib.linux-x86_64-3.6/warpctc_pytorch/__init__.py -> /home/sorson/anaconda3/lib/python3.6/site-packages/warpctc_pytorch
byte-compiling /home/sorson/anaconda3/lib/python3.6/site-packages/warpctc_pytorch/__init__.py to __init__.cpython-36.pyc
running install_egg_info
Removing /home/sorson/anaconda3/lib/python3.6/site-packages/warpctc_pytorch-0.1-py3.6.egg-info
Writing /home/sorson/anaconda3/lib/python3.6/site-packages/warpctc_pytorch-0.1-py3.6.egg-info

[ahmedmazari]

@dlmacedo have you solved the problem ? If yes please share an answer

[skaae]

I Also had that problem untill i checked the path of gcc 😃 It seems to be gcc version 5.4.1 that is the problem. I just compiled and imported after changing to gcc version 4.8.4