visual-studio-2015 - Visual Studio 2015 中的 C++ AMP : Compiler/runtime bug or buggy sample?

Question

我想尝试以下来自 Microsoft 文档的 C++ AMP 代码示例:

(在 https://msdn.microsoft.com/en-us/library/hh265136.aspx 上的第二个代码示例，稍微适应将其转换为程序):

#include "stdafx.h"

#include <amp.h>
#include <iostream>
using namespace concurrency;

const int size = 5;

void CppAmpMethod() {
    int aCPP[] = { 1, 2, 3, 4, 5 };
    int bCPP[] = { 6, 7, 8, 9, 10 };
    int sumCPP[size];

    // Create C++ AMP objects.
    array_view<const int, 1> a(size, aCPP);
    array_view<const int, 1> b(size, bCPP);
    array_view<int, 1> sum(size, sumCPP);
    sum.discard_data();

    parallel_for_each(
        // Define the compute domain, which is the set of threads that are created.
        sum.extent,
        // Define the code to run on each thread on the accelerator.
        [=](index<1> idx) restrict(amp)
    {
        sum[idx] = a[idx] + b[idx];
    }
    );

    // Print the results. The expected output is "7, 9, 11, 13, 15".
    for (int i = 0; i < size; i++) {
        std::cout << sum[i] << "\n";
    }
}


int main()
{
    CppAmpMethod();
    return 0;
}

不幸的是，当编译(使用 Visual Studio 2015)并执行时，这会导致第一个 array_view 结构的运行时异常。

'ConsoleApplication2.exe' (Win32): Loaded 'C:\Windows\SysWOW64\nvwgf2um.dll'. Cannot find or open the PDB file.
'ConsoleApplication2.exe' (Win32): Loaded 'C:\Windows\SysWOW64\psapi.dll'. Cannot find or open the PDB file.
Exception thrown at 0x0F9CC933 (vcamp140d.dll) in ConsoleApplication2.exe: 0xC0000005: Access violation reading location 0xCDCDCDCD.

我想知道这样一个简单的代码示例怎么会失败得如此严重。是示例代码错误还是编译器错误？它当然也可能是我的系统所特有的，因为毕竟使用 C++ AMP 可能涉及与图形驱动程序等的低级交互，这可能会触发那里的错误。任何帮助将不胜感激!

Answer 1

您应该将调试器类型更改为 仅 GPU .

请看截图: