Recent questions tagged vectorization

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vectorization - Is _mm_broadcast_ss faster than _mm_set1_ps?

Is this code float a = ...; __m256 b = _mm_broadcast_ss(&a) always faster than this code float a = ...; ... rather than float a = ...? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vectorization - Pandas: add timedelta column to datetime column (vectorized)

I have a pandas dataframe with two columns, a date column and an int column, and I'd simply like to add the ... poor soul trying to do this. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vectorization - Clip values between a minimum and maximum allowed value in R

In Mathematica there is the command Clip[x, {min, max}] which gives x for min<=x<=max, min for x<min ... value, vector, matrix or dataframe... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vectorization - Generating arrays using bsxfun with anonymous function and for elementwise subtractions - MATLAB

I have the following code: n = 10000; s = 100; Z = rand(n, 2); x = rand(s, 1); y = rand(s, 1) ... there a way to put out1 on the main diagonal? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vectorization - R: find nearest index

I have two vectors with a few thousand points, but generalized here: A <- c(10, 20, 30, 40, 50) b <- c( ... with long vectors of both A and b. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vectorization - Does R leverage SIMD when doing vectorized calculations?

Given a dataframe like this in R: +---+---+ | X | Y | +---+---+ | 1 | 2 | | 2 | 4 | ... it, but I cannot find anything that confirms my hunch. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vectorization - Difference between the AVX instructions vxorpd and vpxor

According to the Intel Intrinsics Guide, vxorpd ymm, ymm, ymm: Compute the bitwise XOR of packed double-precision ( ... data (and vice versa)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vectorization - numpy elementwise outer product

I want to do the element-wise outer product of two 2d arrays in numpy. A.shape = (100, 3) # A numpy ... Does anyone have an idea? Thank you! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vectorization - pdist2 equivalent in MATLAB version 7

I need to calculate the euclidean distance between 2 matrices in matlab. Currently I am using bsxfun and ... Any help. Regards, Bhavya See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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