osbm/cuda-kernel-nix
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its working now

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This commit is contained in:
Osman Faruk Bayram 2025-08-27 01:18:05 +03:00
parent 347d5c6554
commit eacee11566
2 changed files with 44 additions and 27 deletions
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37
flake.nix
View file

@ -29,22 +29,39 @@
packages."${system}" = {
# just one main.cu file for now
# compile it and place it to $out/bin/cuda-kernel
cuda-kernel = pkgs.cudaPackages.backendStdenv.mkDerivation {
name = "cuda-kernel";
src = ./.;
buildInputs = with pkgs; [
cuda-kernel = let
# Use CUDA 12.0 which should be compatible with driver 580.76.05
cudaPackages = pkgs.cudaPackages;
cudatoolkit = cudaPackages.cudatoolkit;
in
cudaPackages.backendStdenv.mkDerivation {
name = "cuda";
src = ./main.cu;
unpackPhase = "true";
buildInputs = [
cudatoolkit
cudaPackages.cuda_cudart
linuxPackages.nvidia_x11_beta
];
cudaSupport = true;
requiredSystemFeatures = [ "cuda" ];
LD_LIBRARY_PATH = "${pkgs.linuxPackages.nvidia_x11_beta}/lib";
nativeBuildInputs = [
cudatoolkit
pkgs.autoAddDriverRunpath
];
LD_LIBRARY_PATH = "${cudatoolkit}/lib:${cudaPackages.cuda_cudart}/lib";
buildPhase = ''
nvcc -o main main.cu
echo "GCC Version:"
gcc --version
echo "NVCC Version:"
nvcc --version
echo "Building CUDA program..."
nvcc -arch=sm_89 -o main $src
mkdir -p $out/bin
mv main $out/bin/cuda-kernel
cp main $out/bin/
'';
meta = {
mainProgram = "main";
platforms = ["x86_64-linux"];
};
};
default = self.packages."${system}".cuda-kernel;
};

16
main.cu
View file

@ -1,13 +1,13 @@
#include <unistd.h>
#include <iostream>
#include "cuda.h"
int main() {
size_t mf, ma;
cudaMemGetInfo(&mf, &ma);
std::cout << "Free memory (mb): " << mf/1024/1024 << std::endl;
std::cout << "Total memory (mb): " << ma/1024/1024 << std::endl;
size_t free_t, total_t;
cudaError_t err;
err = cudaMemGetInfo(&free_t, &total_t);
if (err != cudaSuccess) { printf("cudaMalloc d_steps_arr error: %s\n", cudaGetErrorString(err)); return 1; }
std::cout << "Free mem: " << free_t / (1024 * 1024) << " MB Total mem: " << total_t / (1024 * 1024) << " MB" << std::endl;
std::cout << "Free mem: " << free_t / (1024 * 1024 * 1024) << " GB Total mem: " << total_t / (1024 * 1024 * 1024) << " GB" << std::endl;
return 0;
}