CUDA三维数组

浏览数：31 / 时间：2015年06月08日

根据上面链接的帖子研究了下三维数组，就像他自己说的一样是有问题的，我自己修改了下，结果终于正确了。大家有兴趣的可以对照着看看。

整个过程关键参考了这篇文章http://www.xuebuyuan.com/685353.html

 1 #include <stdio.h>
 2 //#include <cutil.h>
 3 #include <helper_cuda.h>//替代cutil.h
 4 #include <cuda_runtime.h>
 5 
 6 #define Width  2
 7 #define Height 2
 8 #define Depth  2
 9 int bmp1[Width][Height][Depth]={11,22,33,44,55,66,77,88};
10 int bmp2[Width][Height][Depth];
11 int main(){
12 
13     cudaPitchedPtr devPitchedPtr;
14     cudaExtent extent = make_cudaExtent(Width * sizeof(int), Height, Depth);
15     cudaMalloc3D(&devPitchedPtr, extent);
16     cudaMemset3D(devPitchedPtr, 0, extent);
17 
18 
19     cudaError status;
20     cudaMemcpy3DParms HostToDev = { 0 };
21     HostToDev.srcPtr = make_cudaPitchedPtr((void*)bmp1,Width * sizeof(int), Width, Height);
22     HostToDev.dstPtr = devPitchedPtr;
23     HostToDev.extent = extent;
24     HostToDev.kind = cudaMemcpyHostToDevice;
25     status = cudaMemcpy3D(&HostToDev);
26     if (status != cudaSuccess){
27         fprintf(stderr, "MemcpyHtD: %s\n", cudaGetErrorString(status));
28     }
29 
30     cudaMemcpy3DParms DevToHost = { 0 };
31     DevToHost.srcPtr = devPitchedPtr;
32     DevToHost.dstPtr = make_cudaPitchedPtr((void*)bmp2, Width * sizeof(int), Width, Height);
33     DevToHost.extent = extent;
34     DevToHost.kind = cudaMemcpyDeviceToHost;
35     status = cudaMemcpy3D(&DevToHost);
36     if (status != cudaSuccess){
37         fprintf(stderr, "MemcpyHtD: %s\n", cudaGetErrorString(status));
38     }
39     cudaFree(&devPitchedPtr);
40 
41     int i, j, k;
42     for (i = 0; i<2; i++)
43     for (j = 0; j<2; j++)
44     for (k = 0; k<2; k++)
45         printf("bmp2[%d][%d][%d]=%d\n", i, j, k, bmp2[i][j][k]);
46 
47     return 0;
48 }