c++ - CUDA编译错误: class template has already been defined-6ren

c++ - CUDA编译错误: class template has already been defined

转载作者：行者123 更新时间：2023-12-02 11:15:19

我是cuda的新手，并尝试运行一个简单的vector add示例，该示例在网上找到以开始使用。我正在使用Win10 64位和Visual Studio 2017。

#include "cuda_runtime.h"
#include "cuda.h"
#include "device_launch_parameters.h"
#include <iostream>


#include <math.h>
// Kernel function to add the elements of two arrays
__global__
void add(int n, float *x, float *y)
{
    int index = threadIdx.x;
    int stride = blockDim.x;
    for (int i = index; i < n; i += stride)
        y[i] = x[i] + y[i];
}

int main(void)
{
    int N = 1 << 20;
    float *x, *y;

    // Allocate Unified Memory – accessible from CPU or GPU
    cudaMallocManaged(&x, N * sizeof(float));
    cudaMallocManaged(&y, N * sizeof(float));

    // initialize x and y arrays on the host
    for (int i = 0; i < N; i++) {
        x[i] = 1.0f;
        y[i] = 2.0f;
    }

    // Run kernel on 1M elements on the GPU
    add <<<1, 1 >>>(N, x, y);

    // Wait for GPU to finish before accessing on host
    cudaDeviceSynchronize();

    // Check for errors (all values should be 3.0f)
    float maxError = 0.0f;
    for (int i = 0; i < N; i++)
        maxError = fmax(maxError, fabs(y[i] - 3.0f));
    std::cout << "Max error: " << maxError << std::endl;

    // Free memory
    cudaFree(x);
    cudaFree(y);

    return 0;
}

我使用了“VS2017开发人员命令提示符”，因为窗口的命令提示符给了我

nvcc fatal : Cannot find compiler 'cl.exe' in PATH

而且在线解决方案对我不起作用。然后我运行了这个命令(--compiler -options已经解决了一些错误)

nvcc add.cu --compiler-options "-D _WIN64"

但是编译器仍然给我错误

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(95): error: class template "std::_Is_function" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(139): error: class template "std::_Is_memfunptr" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(1824): error: class template "std::result_of" has already been defined

C:\Programming\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.14.26428\include\type_traits(1824): error: class template "std::result_of" has already been defined

我一直在寻找解决方案。似乎其他遇到类似问题的人的头文件也有问题，但是我的示例代码是从互联网上下载的，上传它的人对此没有任何问题，这使我对程序的哪个部分感到困惑有问题。

附注:我不知道我的cuda是否安装正确。细节:
我无法在Windows上安装cuda，安装不断告诉我安装失败。然后，我在第19条帖子的链接中找到了解决方案: https://devtalk.nvidia.com/default/topic/1035535/cuda-setup-and-installation/cuda-9-2-does-not-work-with-visual-studio-2017-15-7-1/2
似乎工作正常，但我不知道这是否是问题。

最佳答案

我在Nvidia CUDA论坛上发布了相同的帖子:
Link Here

我使用帖子中的方法重新安装了多次，但仍然遇到相同的“类模板”问题。

然后我也使用相同的方法重新安装了CUDA 9.1和VS2017 ver 15.6.7，它终于可以工作了。

我遇到的其他问题也在帖子中。

关于c++ - CUDA编译错误: class template has already been defined，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/51182773/

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c++ - CUDA编译错误: class template has already been defined