Kernel debugging does not work properly with Nsight Visual Studio Code Edition #50
Description
what happened?
When I use the vscode +
Kernel debugging does not work properly with Nsight Visual Studio Code Edition plugin to debug a .cu file, the breakpoint is not triggered properly when it is set inside a kernel function. It can only be triggered when the breakpoint is set in a non-kernel function position.
environment
- OS: WSL ubuntu 24.04
- vscode version: 1.98.2
- Nsight Visual Studio Code Edition plugin version: 2024.1
- Device: nvidia RTX 4060
- Cuda Version: 12.8
- Driver Version: 572.60
- my code:
#include <cuda_runtime_api.h>
#include <stdio.h>
__host__ const char *host_hello_world(void) { return "CPU: Hello world!\n"; }
__device__ const char *device_hello_world(void) {
return "GPU: Hello world!\n";
}
__global__ void hello_world(void) {
// break point here, not working
const char *str = device_hello_world();
printf("%s", str);
}
int main(int argc, char **argv) {
// break point here, working
printf("%s", host_hello_world());
hello_world<<<1, 10>>>();
cudaDeviceReset();
return 0;
}
- .vscode/launch.json
{
"version": "0.2.0",
"configurations": [
{
"name": "CUDA Debug",
"type": "cuda-gdb",
"request": "launch",
"program": "${fileDirname}/${fileBasenameNoExtension}",
"preLaunchTask": "nvcc compile",
"stopAtEntry": false,
"cwd": "${workspaceFolder}",
"environment": [],
"debuggerPath": "/usr/local/cuda/bin/cuda-gdb",
}
]
}
- .vscode/task.json
"version": "2.0.0",
"tasks": [
{
"label": "nvcc compile",
"type": "shell",
"command": "nvcc",
"args": [
"-g", "-G",
"-arch=sm_75", // RTX 4060
"-D__CUDA_DEBUG__",
"-Xcompiler", "-rdynamic",
"-lineinfo",
"-I${workspaceFolder}/include",
"${file}",
"-o",
"${fileDirname}/${fileBasenameNoExtension}"
],
"group": "build",
"problemMatcher": []
}
]
}
I would be grateful if you could help