[mlpack] Add feature openmp

[JackBoosY]

Fixes #18423.

[JackBoosY]

@DanL1234 Can you please test openmp feature with my changes?

Thanks.

[DanL1234]

Hi @JackBoosY - absolutely, would love to help. Can you tell me what I need to do? (I guess I need to try a fix you have made in a branch?) Sorry, but you will need to give me baby-steps as I am not familiar with git (I worked in tortoise SVN many years ago, so get the underlying idea, if not the procedure).

Ps. Thank you for your help on this issue - very much appreciated. :-)

[JackBoosY]

@DanL1234 You can click the command line instructions link in this page.

[DanL1234]

@DanL1234 Can you please test openmp feature with my changes?

Thanks.

@JackBoosY - hi there. I just got around to trying this and had an issue.

Steps I took:

1. git clone https://github.com/JackBoosY/vcpkg.git
2. git checkout dev/jack/18423
3. rename c:\src\vcpkg\ to c:\src\vcpkg-18423\
4. entered the directory \vcpkg-18423\
5. called .\bootstrap-vcpkg.bat
6. .\vcpkg install mlpack:x64-windows

All dependencies are built fine according to powershell output, until it gets to "mlpack", package 80 of 80.

Issue seen:

See attached screen capture and log that is being referred to. (plus an extra one for fun ;-))

install-x64-windows-rel-out.log
install-x64-windows-dbg-out.log

Did I do something wrong do you think?

Thanks in advance.
Daniel

[vicroms]

@DanL1234

From your logs I can see that you're running out of memory when compiling mlpack. Also in order to test that the feature works it should be vcpkg install mlpack[openmp].

fatal error C1060: compiler is out of heap space

[vicroms]

@JackBoosY

Successfully tested new feature locally.