MathDx Missing References after linking/including

[gardiner.bradypaul]

Hello,

I’m currently trying to setup MathDx on a Rocky Linux 9.6 machine (using the Eclipse plugin from the CUDA toolkit) in hopes of using cuFFTDx. I followed the instructions Nvidia posted (here: Quick Installation Guide — cuFFTDx and here: Installation Guide — nvCOMPDx ) to the best of my understanding, but I’m still having issues getting it to work.

Unpacking the .tar into my project and trying to build results in an error where one of the compression tests complains about not being able to find nvlz4.h, which I also cannot find.

Removing the examples from the project causes the complex_types.hpp, block_fft.hpp, preprocess_fold.hpp, post_proces_fold.hpp, fft_block_preprocess.hpp, fft_postprocess.hpp, fft_block_redistribute.hpp, and fft_execution.hpp files to error out with complaints about CUDA staples like “threadIdx” and __synchthreads() not being declared in scope.

I have also tried moving the MathDx content to /usr/local and link to it there, but I get identical results to when I remove the examples.

I am able to compile and run other projects in my Eclipse CUDA workspace.

I am running:

OS: Rocky 9.6
G++: 11.5.0 (default C++ 17 standard)
CUDA: 13.0.88
MathDx: nvidia-mathdx-25.06.1 for CUDA 13
Card: A100
Driver: 580.95.05

I have linked:

(path)/nvidia/mathdx/25.06/lib/libnvcompdx.a
(path)/nvidia/mathdx/25.06/lib/libcusolverdx.a

I have included:

(path)/nvidia/mathdx/25.06/include
(path)/nvidia/mathdx/20.06/external/cutlass/include

Generating SM 8.0 SASS and SM 8.0 PTX

Does anyone know what I’m missing?

Thanks for your time/help.

[veraj]

Hi, @gardiner.bradypaul

Can you compile and run without nsight eclipse plugin ?

[gardiner.bradypaul]

It’s a managed project, so the makefile doesn’t play nicely when run by itself. It doesn’t error out, but it doesn’t successfully compile the project either.

Removing the plugin removes CUDA support from Eclipse so it won’t compile that way.

Thankfully, it looks like I have solved (this) problem. There was a syntax error where I was trying to add libraries (failed to chop off the lib prefix and file extension.) The compiler also required -dlto, which doesn’t play well with debug.

I included “cufftdx.hpp” in the main file and it compiles without complaining now. I suppose I’ll be back or post another question if I have any issues actually using the library.

Thank you for your response. :)

[veraj]

Thanks for the info and glad your issue is resolved now !
Feel free to post new questions whenever you need support.