Building GPU Libraries

[llauriez]

Hello Zachary,

Thanks for the package!! I am trying to build the GPU libraries with the following

nvcc -O3 -gencode arch=compute_80,code=sm_80 \
                -gencode arch=compute_70,code=sm_70 \
                -gencode arch=compute_90,code=sm_90 \
                -std=c++17 -Xcompiler -fPIC --shared \
                -I../inst/include \
                -I${PATH_TO_EIGEN3}/eigen3 \
                -o ../inst/lib/RcppML_gpu.so \
                gpu_bridge_nmf.cu gpu_bridge_svd.cu gpu_bridge_cluster.cu gpu_bridge_utils.cu sp_gpu_bridge.cu \
                -lcublas -lcusparse -lcudart

and ran into two errors:

1. issue:sp_gpu_bridge.cu:18:10: fatal error: RcppML/core/logging.hpp: No such file or directory
   18 | #include <RcppML/core/logging.hpp>
   This, I was able to resolve by creating a symlink

ln -s FactorNet RcppML

2. The second issue is similar but from #include "streampress/gpu/spgpu_v2_adapter.cuh". I was unable to find any adapter.cuh file under "include/streampress".

I was wondering if you have any tips on resolving this issue. Thanks in advance for your time and help!

All the best,
Laurie

[zdebruine]

Hi Laurie, thanks for trying the GPU build!

Issue 1 (logging.hpp): This was a stale include path left over from a namespace rename. I've pushed a fix in df69ddd that changes the include from <RcppML/core/logging.hpp> to <FactorNet/core/logging.hpp>. Pull the latest main and this should resolve cleanly.

Issue 2 (spgpu_v2_adapter.cuh): The sp_gpu_bridge.cu file implements direct-to-GPU .spz file decoding, which depends on a StreamPress GPU adapter header that hasn't been published yet. It's not needed for standard GPU NMF/SVD/clustering.

I'd recommend building with the provided Makefile instead of a manual nvcc command — it handles this automatically by conditionally skipping sp_gpu_bridge.cu when the adapter header isn't present:

cd src/
make -f Makefile.gpu
make -f Makefile.gpu install

The Makefile also auto-detects Eigen from your R installation and sets all the correct include paths. Let me know if you run into anything else!