4/6/2023 0 Comments Dim3 grid cuda![]() ![]() ![]() NVIDIA已经提供了一个很好的计算工具-CUDA_Occupancy_Calculator.xls,存放位置为C:\Program Files\NVIDIA GPUComputing Toolkit\CUDA\v7. dim3 block(32,32) dim3 grid grid.x (imagewidth block.x - 1)/block.x grid.y (imageheight block.y. If we want to set maximum possible block size, we have to make sure that the product of its dimensions does not exceed the block size limit. Printf("Kernel elapsed time: %3.3f ms \n", time) ĬudaMemcpy(h_vec3, d_vec3, N*sizeof(int), cudaMemcpyDeviceToHost) When processing 2D images with CUDA, a natural intuition is to use 2D block and grid shape. Int idx = threadIdx.x blockIdx.x * blockDim.x ĬudaEventElapsedTime(
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