simd

来源： https://stackoverflow.com/questions/38750994/what-is-ext-vector-type-and-simd

来源： https://stackoverflow.com/questions/62734930/arm64-assembly-ldp-vs-ld4-execution-time

来源： https://stackoverflow.com/questions/62734930/arm64-assembly-ldp-vs-ld4-execution-time

来源： https://stackoverflow.com/questions/63248047/how-to-optimise-this-8-bit-positional-popcount-using-assembly

来源： https://stackoverflow.com/questions/63248047/how-to-optimise-this-8-bit-positional-popcount-using-assembly

来源： https://stackoverflow.com/questions/53450282/data-alignment-to-enable-vectorization-efficient-cache-access

来源： https://stackoverflow.com/questions/53450282/data-alignment-to-enable-vectorization-efficient-cache-access

来源： https://stackoverflow.com/questions/63360909/avx2-simd-performs-relatively-worse-to-scalar-at-higher-optimization-level

问题 For my project, I've written a naive C implementation of direct 3D convolution with periodic padding on the input. Unfortunately, since I'm new to C, the performance isn't so good... here's the code: int mod(int a, int b) { // calculate mod to get the correct index with periodic padding int r = a % b; return r < 0 ? r + b : r; } void convolve3D(const double *image, const double *kernel, const int imageDimX, const int imageDimY, const int imageDimZ, const int stencilDimX, const int stencilDimY

问题 I'm trying to implement _mm_add_epi32 in golang assembly, optionally with help of avo. But I know little about assembly and do not even know how to start it. Can you give me some hint of code? Thank you all. Here's the equivalent slower golang version: func add(x, y []uint32) []uint32 { if len(x) != len(y) { return nil } result := make([]uint32, len(x)) for i := 0; i < len(x); i++ { result[i] = x[i] + y[i] } return result } I know that the struction paddq xmm, xmm is what we need, but do not