概述:数组分配可以通过cudaMallocArray()和cudaMalloc3DArray()
1、cudaMallocArray()
cudaError_t cudaMallocArray ( struct cudaArray ** array, const struct cudaChannelFormatDesc * desc, size_t width, size_t height = 0, unsigned int flags = 0 )
例:2DArray分配
1 cudaArray *d_volumeArray; 2 cudaChannelFormatDesc desc = cudaCreateChannelDesc(32, 0, 0, 0, cudaChannelFormatKindFloat); 3 cudaMallocArray(&d_volumeArray, &desc, 128, 128); 4 cudaMemcpyToArray(d_volumeArray, 0, 0, h_volume, sizeof(float)*128*128, cudaMemcpyDeviceToDevice);
2、cudaMalloc3DArray()
1 cudaError_t cudaMalloc3DArray ( 2 struct cudaArray ** array, 3 const struct cudaChannelFormatDesc * desc, 4 struct cudaExtent extent, 5 unsigned int flags = 0 6 )
例:
1 cudaChannelFormatDesc channelDesc = cudaCreateChannelDesc<uchar>(); 2 cudaArray *d_volumeArray; 3 cudaMalloc3DArray(&d_volumeArray, &channelDesc, volumSize);