uint8_t data[] = "mykeyxyz:1234nky:123n...";. My lines of string has format key:value, where each line has len(key) <= 16 guaranteed. I want to load mykeyxyz into a __m128i, but fill out the higher position with 0. The easiest way is to…
I want to have X amount of std::vectors of equal size, which I can be processed together in a for loop which goes from start to finish in a linear fashion. For example: for (int i = 0; i <…
According to this page https://sourceware.org/glibc/wiki/libmvec, I should be able to manually vectorize a few complicated instructions like cosine by using the libmvec functions. However, I don't know how to get gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0 to recognize them. Am I missing…
Why is np.dot so much faster than np.sum? Following this answer we know that np.sum is slow and has faster alternatives. For example: In [20]: A = np.random.rand(1000) In [21]: B = np.random.rand(1000) In [22]: %timeit np.sum(A) 3.21 µs ±…
Which native iOS framework is best used to eradicate this cpu hog written in OpenCV? /// Reduce the channel elements of given Mat to a single channel static func reduce(input: Mat) throws -> Mat { let output = Mat(rows: input.rows(),…
I'm writing code that will subtract corresponding bytes in two arrays and count the number of resulting bytes surpassing a given threshold. AFAIU, it would really benefit from .NET SIMD, but System.Numerics.Vector.IsHardwareAccelerated returns false when I compile C# on Raspberry…