Train net using caffe DLL in C++

Question

The most recent Windows Branch of caffe (https://github.com/BVLC/caffe/tree/windows) provides the option to compile caffe as a DLL.

I found it hard to find example code how to use the DLL in another C++ project as most people use the python interface, which is not a preferred option in my case. Looking at the implementation of the train() method in caffe.cpp, I tried the following to train a net:

caffe::SolverParameter solver_param;
caffe::ReadSolverParamsFromTextFileOrDie("C:\\path\\to\\solver.prototxt", &solver_param);

Caffe::set_mode(Caffe::GPU);

shared_ptr<caffe::Solver<float>>
  solver(caffe::SolverRegistry<float>::CreateSolver(solver_param));
solver->Solve();

Unfortunately, the first line throws a linker error, although I added caffe.lib and specified the path to caffe.lib and caffe.dll in my project properties in VS. Accessing other caffe functions (such as set_mode) works fine.

Apart from the linker error (suggestions to solve it are appreciated!), does the code look plausible to you? Did anyone manage to use caffe functionalities in C++ and is willing to share a code snippet?

Answer 1

You need to link to caffeproto.lib and to libprotobuf.lib to solve dependencies error for this piece of code.

Just diving into caffe so I can't really judge your code. I am looking at this:https://medium.com/@shiyan/caffe-c-helloworld-example-with-memorydata-input-20c692a82a22 and so far found it helpful.