MATLAB compilation matconvnet on Windows

Windows Ten Bits

Matlab 2015b/2016a

Matconvnet 1.0-beta20 or download git from github repository

CUDA GPU Computing ToolKit 7.5

Cudnn-rc4/cudnn-rc5

All according to official website http://www.vlfeat.org/matconvnet/

After the configuration is done,

Compile command

Vl_compilenn (' Enablegpu ', true, ... ')    Cudaroot ', ' C:\Program files\nvidia GPU Computing toolkit\cuda\v7.5 ',...    ' Cudamethod ', ' NVCC ', ...    ' Enablecudnn ', True, ...    ' Cudnnroot ', ' LOCAL\CUDNN-RC4 ',...    ' Verbose ', ' 2 ',...    ' Debug ', ' 1 ');

　　

Two main issues encountered

1. Can't find ' cudnn.h ', this is the cudnnroot path configuration problem, the official website means to create a new local folder under Matconvnet directory, and then put CUDNN into the local folder, open local\ CUDNN-RC4 should see three folders Include,bin,lib, compile at the Matconvnet directory, the first input addpath matlab to join the Matlab file path. Hint, the direct NVIDIA official website download CUDNN After decompression should be more than a level of intermediate directory Cuda, such as Cudnn\cuda\, at compile time can be cudnn path written "Local\cudnn-rc4\cuda", or manually reduce the intermediate directory

2. Error compiling Vl_compilenn

Original code

If Opts.enablecudnn  flags.cc{end+1} = '-denable_cudnn ';  flags.cc{end+1} = ['-i ' opts.cudnnincludedir]; end

File path error, in error message-I followed by Cudnnicludedir path without double quotes

After the change, a very blind at first, read the MathWorks on the answer to take serious look at the error message, careful should be able to find the problem

If Opts.enablecudnn  flags.cc{end+1} = '-denable_cudnn ';  flags.cc{end+1} = ['-i ' ' opts.cudnnincludedir ' "'];%http://cn.mathworks.com/matlabcentral/answers/264961- Having-problem-in-matconvnet-to-compiling-the-cudnn-support "Opts.cudnnincludedir" end

The latest version on GitHub has fixed this issue

3.NVCC compile matconvnet\matlab\src\bits\impl\nnbilinearsampler_cudnn.cu Error in 250 rows or so undefined "backward" identifier

Because in

Template<typename type, bool backwarddata, BOOL Backwardgrid>static Vl::errorforward_backward

The definition of backward is missing from the function and is modeled after the previous

Template<typename type>__global__ void Grid_backward_kernel

function is added at the beginning of the function

  BOOL backward = backwarddata;//added here for Cudnn compile with  undefined ' backward ' identifier

found that backward or backwarddata is just a bool type value as an option

4. Error compiling MATCONVNET\MATLAB\SRC\BITS\IMPL\NNBILINEARSAMPLER_CUDNN.CU, line 24th

#warning "Bilinearsampler_cudnn.cu'll be disabled as it requires CUDNN v5 or higher."

Invalid precompiled directive "warning"

Originally, there are #warning instructions in gcc,c#, MSVC c\c++ No #warning instructions, you can use the #pragma message "warning ..." instead

MATLAB compilation matconvnet on Windows