iamhankai / cpp-pytorch Goto Github PK

Hi, @iamhankai What is your platform to build this repo? Thanks.

The delimiter is actually \t (single tabulation). The following line

labels = np.loadtxt('synset_words.txt', dtype=str, delimiter='\n')

needs to be changed to

labels = np.loadtxt('synset_words.txt', dtype=str, delimiter='\t')

In CSV files new line means new row, that is a new entry. A delimiter is something the splits the columns in a single row.

i can run 'camke ..' successfully, but when i run 'make', it shows :
/home/workplace/cpp-pytorch/example-app.cpp:44:49: error: ‘class at::DeprecatedTypeProperties’ has no member named ‘tensorFromBlob’
auto img_tensor = torch::CPU(torch::kFloat32).tensorFromBlob(img_float.data, {1, 224, 224, 3});
^
what can i do next to solve it, thx!

I follow your step but meet this error.
But same libtorch/ works well in official doc: https://pytorch.org/tutorials/advanced/cpp_export.html

I am confused!

CMake Error at CMakeLists.txt:18 (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.

-- Configuring incomplete, errors occurred!

I print the results of image preprocessing， and they are a little different.

[图片]

$ ./example-app ../model.pt ../dog.png ../synset_words.txt
load model ok
execution time = 4.47019s
Segmentation fault: 11

Can anyone help me out? Thanks

Hello. It appears error: No rule to make target TORCH_LIBRARY-NOTFOUND, need by example-app when making. How to fix it ?

In my python code my forward is defined as：
def forward(self, input_seq, hidden):
output_seq, hidden = self.gru(input_seq, hidden)
if isinstance(output_seq, torch.nn.utils.rnn.PackedSequence):
output_seq, _ = torch.nn.utils.rnn.pad_packed_sequence(
output_seq, batch_first=False)
mean = self.linear_mean2(F.relu(self.linear_mean1(output_seq)))
return mean, hidden
how can i use forward() in c++ ?

When I run the forward prediction, the C++ run time is much longer than python, has someone encountered this problem?

this part is neccesary ,can i remove it only leave " std::vectortorch::jit::IValue inputs;"

// Create a vector of inputs.
std::vectortorch::jit::IValue inputs;
inputs.push_back(torch::rand({64, 3, 224, 224}));

module->forward(inputs).toTensor();
inputs.pop_back();

An error occours at: traced_script_module.save("model.pt")
It seems that traced_script_module has no attribute 'save'.

Hello I am trying to run your code however I have problem while compiling using cmake. I have this error.

Run Build Command:"/usr/bin/make" "cmTC_84084/fast"
/usr/bin/make -f CMakeFiles/cmTC_84084.dir/build.make CMakeFiles/cmTC_84084.dir/build
make[1]: Entering directory '/media/mspl/17C9559C215E2AF1/Pytorch_CPP/cpp-pytorch/build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_84084.dir/CheckSymbolExists.c.o
/usr/bin/cc     -o CMakeFiles/cmTC_84084.dir/CheckSymbolExists.c.o   -c /media/mspl/17C9559C215E2AF1/Pytorch_CPP/cpp-pytorch/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
Linking C executable cmTC_84084
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_84084.dir/link.txt --verbose=1
/usr/bin/cc       CMakeFiles/cmTC_84084.dir/CheckSymbolExists.c.o  -o cmTC_84084 -rdynamic 
CMakeFiles/cmTC_84084.dir/CheckSymbolExists.c.o: In function `main':
CheckSymbolExists.c:(.text+0x16): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_84084.dir/build.make:97: recipe for target 'cmTC_84084' failed
make[1]: *** [cmTC_84084] Error 1
make[1]: Leaving directory '/media/mspl/17C9559C215E2AF1/Pytorch_CPP/cpp-pytorch/build/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_84084/fast' failed
make: *** [cmTC_84084/fast] Error 2

File /media/mspl/17C9559C215E2AF1/Pytorch_CPP/cpp-pytorch/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <pthread.h>

int main(int argc, char** argv)
{
  (void)argv;
#ifndef pthread_create
  return ((int*)(&pthread_create))[argc];
#else
  (void)argc;
  return 0;
#endif
}

Determining if the function pthread_create exists in the pthreads failed with the following output:
Change Dir: /media/mspl/17C9559C215E2AF1/Pytorch_CPP/cpp-pytorch/build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_5a215/fast"
/usr/bin/make -f CMakeFiles/cmTC_5a215.dir/build.make CMakeFiles/cmTC_5a215.dir/build
make[1]: Entering directory '/media/mspl/17C9559C215E2AF1/Pytorch_CPP/cpp-pytorch/build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_5a215.dir/CheckFunctionExists.c.o
/usr/bin/cc    -DCHECK_FUNCTION_EXISTS=pthread_create   -o CMakeFiles/cmTC_5a215.dir/CheckFunctionExists.c.o   -c /usr/share/cmake-3.5/Modules/CheckFunctionExists.c
Linking C executable cmTC_5a215
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_5a215.dir/link.txt --verbose=1
/usr/bin/cc   -DCHECK_FUNCTION_EXISTS=pthread_create    CMakeFiles/cmTC_5a215.dir/CheckFunctionExists.c.o  -o cmTC_5a215 -rdynamic -lpthreads 
/usr/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_5a215.dir/build.make:97: recipe for target 'cmTC_5a215' failed
make[1]: *** [cmTC_5a215] Error 1
make[1]: Leaving directory '/media/mspl/17C9559C215E2AF1/Pytorch_CPP/cpp-pytorch/build/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_5a215/fast' failed
make: *** [cmTC_5a215/fast] Error 2

cmake -DCMAKE_PREFIX_PATH=$PWD/../libtorch ..

got error:

[ 50%] Building CXX object CMakeFiles/example-app.dir/example-app.cpp.o
/home/luban/cpp-pytorch/example-app.cpp:3:27: fatal error: torch/Tensor.h: No such file or directory
 #include <torch/Tensor.h>

img_tensor[0][0] = img_tensor[0][0].sub_(0.485).div_(0.229);
img_tensor[0][1] = img_tensor[0][1].sub_(0.456).div_(0.224);
img_tensor[0][2] = img_tensor[0][2].sub_(0.406).div_(0.225);

Hello, I wonder to know which CUDA and cudnn version in your project.

I am using CUDA9.0 cudnn7, but there's an error that occurred.
I am confused and guess if this is because I modified files using this:
https://medium.com/@mengjiunchiou/build-opencv-caffe-with-cuda-9-0-on-ubuntu-16-04-b2794a41612d
And I modified this way becuz OpenCV2.4 is incompatible with CUDA9.0.

Now this seems to bother me much more...

Hi, @iamhankai

I met this error when cmake.

Kerb:build Apple$ cmake -DCMAKE_PREFIX_PATH=~/libtorch CMakeLists.txt ..
-- The C compiler identification is AppleClang 10.0.1.10010046
-- The CXX compiler identification is AppleClang 10.0.1.10010046
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - found
-- Found Threads: TRUE
-- Found torch: /Users/Apple/libtorch/lib/libtorch.dylib
CMake Error at CMakeLists.txt:6 (find_package):
By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "OpenCV", but
CMake did not find one.

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

OpenCVConfig.cmake
opencv-config.cmake

Add the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set
"OpenCV_DIR" to a directory containing one of the above files. If "OpenCV"
provides a separate development package or SDK, be sure it has been
installed.
-- Configuring incomplete, errors occurred!

What's wrong to me?

My machine: MacOSX Mojave, Libtorch, OpenCV installed.
My opencv is here:
Kerb:build Apple$ pkg-config --cflags --libs /usr/local/Cellar/opencv/4.1.0_2/lib/pkgconfig/opencv4.pc
-I/usr/local/Cellar/opencv/4.1.0_2/include/opencv4/opencv -I/usr/local/Cellar/opencv/4.1.0_2/include/opencv4 -L/usr/local/Cellar/opencv/4.1.0_2/lib -lopencv_gapi -lopencv_stitching -lopencv_aruco -lopencv_bgsegm -lopencv_bioinspired -lopencv_ccalib -lopencv_dnn_objdetect -lopencv_dpm -lopencv_face -lopencv_freetype -lopencv_fuzzy -lopencv_hfs -lopencv_img_hash -lopencv_line_descriptor -lopencv_quality -lopencv_reg -lopencv_rgbd -lopencv_saliency -lopencv_sfm -lopencv_stereo -lopencv_structured_light -lopencv_phase_unwrapping -lopencv_superres -lopencv_optflow -lopencv_surface_matching -lopencv_tracking -lopencv_datasets -lopencv_text -lopencv_dnn -lopencv_plot -lopencv_videostab -lopencv_video -lopencv_xfeatures2d -lopencv_shape -lopencv_ml -lopencv_ximgproc -lopencv_xobjdetect -lopencv_objdetect -lopencv_calib3d -lopencv_features2d -lopencv_highgui -lopencv_videoio -lopencv_imgcodecs -lopencv_flann -lopencv_xphoto -lopencv_photo -lopencv_imgproc -lopencv_core

Thanks in advance .
Best,
from @bemoregt.

libc++abi.dylib: terminating with uncaught exception of type std::runtime_error: Magic number mismatch in PyTorch file. File may be corrupted or is not actually a PyTorch file.
Abort trap: 6

/Python2C++/main.cpp:18:107: 错误：请求从‘torch::jit::script::Module’转换到非标量类型‘std::shared_ptrtorch::jit::script::Module’ 有人遇到这种问题吗
std::shared_ptrtorch::jit::script::Module module = torch::jit::load("/model.pt");