Win7 64位命令行编译cuda及设置Windows显卡响应时间

 1 #include <iostream>
 2 
 3 #include <cuda.h>
 4 #include <cuda_runtime.h>
 5 #include <device_launch_parameters.h>
 6 
 7 using namespace std;
 8 
 9 __global__ void AddIntsCUDA(int* a, int* b)
10 {
11     for (int i = 0; i < 40000000; ++i)
12     {
13         a[0] += b[0];
14     }
15     
16 }
17 
18 int main()
19 {
20     int h_a = 0;
21     int h_b = 1;
22 
23     int* d_a;
24     int* d_b;
25 
26     if (cudaMalloc(&d_a, sizeof(int)) != cudaSuccess)
27     {
28         cout << "Error CUDA allocating memory" << endl;
29         return 0;
30     }
31     if (cudaMalloc(&d_b, sizeof(int)) != cudaSuccess)
32     {
33         cout << "Error CUDA allocating memory" << endl;
34         cudaFree(d_a);
35         return 0;
36     }
37 
38     if (cudaMemcpy(d_a, &h_a, sizeof(int), cudaMemcpyHostToDevice) != cudaSuccess)
39     {
40         cout << "Error CUDA copying memory" << endl;
41         cudaFree(d_a);
42         cudaFree(d_b);
43         return 0;
44     }
45     if (cudaMemcpy(d_b, &h_b, sizeof(int), cudaMemcpyHostToDevice) != cudaSuccess)
46     {
47         cout << "Error CUDA copying memory" << endl;
48         cudaFree(d_a);
49         cudaFree(d_b);
50         return 0;
51     }
52 
53     AddIntsCUDA << <1, 1 >> >(d_a, d_b);
54 
55     if (cudaMemcpy(&h_a, d_a, sizeof(int), cudaMemcpyDeviceToHost) != cudaSuccess)
56     {
57         cout << "Error CUDA copying memory" << endl;
58         cudaFree(d_a);
59         cudaFree(d_b);
60         return 0;
61     }
62 
63     if (cudaMemcpy(&h_b, d_b, sizeof(int), cudaMemcpyDeviceToHost) != cudaSuccess)
64     {
65         cout << "Error CUDA copying memory" << endl;
66         cudaFree(d_a);
67         cudaFree(d_b);
68         return 0;
69     }
70 
71     cout << "h_a is : " << h_a << endl;
72 
73     cudaFree(d_a);
74     cudaFree(d_b);
75 
76     // cudaDeviceReset must be called before exiting in order for profiling and
77     // tracing tools such as Nsight and Visual Profiler to show complete traces.
78     cudaError_t cudaStatus = cudaDeviceReset();
79     if (cudaStatus != cudaSuccess) {
80         fprintf(stderr, "cudaDeviceReset failed!");
81         return 1;
82     }
83 
84 
85     return 0;
86 }

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers]
"TdrLevel"=dword:00000000
"TdrDelay"=dword:00000020