vl_compilenn Error using toolboxdir

[ybeb545]

When I run vl_compilenn on matlab, I received that error:

Error using toolboxdir (line 59) Could not locate the base directory for distcomp.

Error in vl_compilenn (line 367) sprintf('-I"%s"',fullfile(toolboxdir('distcomp'),'gpu','extern','include')), ...

[crvogt]

Same here, did you come across a solution?

[jotaf98]

Hi, this is because the Parallel Computing Toolbox is required. So your best bet is to install it; without it, you can't use GPU arrays. As a workaround (not sure how helpful), the "matconvnet/matlab/compatibility/parallel/" folder can be added to the path, as this contains a reimplementation of some of this toolbox's functions (though only CPU mode will be available).

[ybeb545]

Installing Parallel Computing Toolbox solved the problem, thanks jotaf98.

[KellyYutongHe]

change line 367 into sprintf('-I"%s"',fullfile('compatibility/parallel/','gpu','extern','include')), ... worked, thanks jotaf98

[zjuxwg0401]

change line 367 into sprintf('-I"%s"',fullfile('compatibility/parallel/','gpu','extern','include')), ... worked, thanks jotaf98 and KellyYutongHe

[Meskaz]

vl_compilenn Error using vertcat Dimensions of arrays being concatenated are not consistent.

Error in vl_compilenn (line 365) flags.nvcc = {'-D_FORCE_INLINES', '--std=c++11', ...

this is the error i get after changing 367 line. Please help

[jotaf98]

Hi, the use of vertcat here doesn't make any sense. If anything, concatenating strings should be horizontal concatenation. Look out for ";" vs "," mistakenly introduced (for an explanation see docs on horizontal and vertical concatenation operators)..

[Farisya33]

May I ask if there is no problem with MatConvNet beta25. Because I fail to compule the vl_compilenn in matlab.

Note: Im using matlabR2019b, visual studio 2017, CPU mode, MatConvNet 25

The error:

mt : general error c101008d: Failed to write the updated manifest to the resource of file "C:\Users\User\AppData\Roaming\MathWorks\MATLAB_Add-Ons\Collections\vlfeat_matconvnet\vlfeat-matconvnet-1e5ae7b\matlab\mex\vl_nnconvt.mexw64". The operation failed.

Error in vl_compilenn>mex_link (line 627) mex(args{:}) ;

Error in vl_compilenn (line 500) mex_link(opts, objs, flags.mex_dir, flags) ;

Error in Test (line 8) vl_compilenn('EnableImreadJpeg', false);

[jotaf98]

This seems like a strange installation directory for MatConvNet. Did you put it there on purpose or is Matlab managing the paths / interpreting it as an "app" somehow?

[Farisya33]

Thank you, I can compile already after I turned off my antivirus.

But may I know how to use my jpeg images as my database in matconvnet? Because I want to train them and recognize them as a speciifc image ny using matconvnet. Somehow, I havent found yet how to convert them into something that can be read in matlab. The examples given in internet are only the trained images. Do I need to convert my jpeg images into something first? Im sorry I didnt have basic in programming