cudaMalloc((void**)&d_minValue, sizeof(int)); cudaMemcpy(d_maxValue, &h_maxValue, sizeof(int), cudaMemcpyHostToDevice); cudaMemcpy(d_minValue, &h_minValue, sizeof(int), cudaMemcpyHostToDevice); getMaxMinValue_CUDA << <gridSize, blockSize >> > (d_inputImage, col, row, d_ma...
这三项操作在一次原子事务中执行。该函数将返回old。 atomicMaxperforms an atomic comparison ofdatato the contents ofmem, writes the maximum value intomemand returns the original contents ofmemfrom before the comparison occured. The contents of the memory being updated by the atomic operation are guar...
The generated CUDA code contains themyAtomicMax_kernel1kernel with calls to theatomicMax()CUDA APIs. // // File: myAtomicMax.cu // ... static __global__ __launch_bounds__(1024, 1) voidmyAtomicMax_kernel1( const int32_T b, const int32_T i, int32_T a_data[]) { uint64_T ...
As pointed out atROCm/hipamd#65, there is not version of the atomicMin/Max methods for signed long long arguments. These variants are available in CUDA as seen athttps://docs.nvidia.com/cuda/cuda-c-programming-guide/#atomicmin(as well as in OpenCL on AMD GPUs). Therefore it seems lik...
cudaMalloc((void**)&dummy_data, sizeof(float)); cudaFree(dummy_data); } // 图像最值计算-CPU void calcMaxMin_CPU(cv::Mat input, uchar &maxV, uchar &minV) { int row = input.rows; int col = input.cols; // 初始化最值