avx

问题 Closed. This question needs debugging details. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . Improve this question I am trying to run this code and it says segmentation fault when I run it. It compiles good. Here is the code. (It works fine on windows). #include<iostream> #include<vector> #include<immintrin.h> const int size = 1000000; std::vector<float>A(size); std::vector<float>B(size); std

问题 Closed. This question needs debugging details. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . Improve this question I am trying to run this code and it says segmentation fault when I run it. It compiles good. Here is the code. (It works fine on windows). #include<iostream> #include<vector> #include<immintrin.h> const int size = 1000000; std::vector<float>A(size); std::vector<float>B(size); std

问题 This question already has answers here : What is the difference between non-packed and packed instruction in the context of SIMD-operations? (2 answers) What is the benefit of SIMD on a superscalar out-of-order CPU? (1 answer) What are some rules of thumb for when SIMD would be faster? (SSE2, AVX) [closed] (1 answer) Why floating point registers are different than general purpose ones (1 answer) Is there any architecture that uses the same register space for scalar integer and floating point

问题 One of the purposes of the C1 bit in the x87 FPU status word is to show whether or not an inexact result was rounded up. Does SSE/AVX provide any such indication for scalar operations? I did not see a similar bit in the MXCSR register. Am I forced to use x87 instructions if I want this information? 回答1: SSE/AVX do not provide hardware support for detecting this, even for scalar instructions like addss . SSE was designed for SIMD, with 4 floats per XMM vector, and presumably Intel didn't want

来源： https://stackoverflow.com/questions/48971804/how-to-compute-sincos-fast-on-a-x64-cpu

来源： https://stackoverflow.com/questions/42763487/best-way-to-store-256-bit-avx-vectors-into-unsigned-long-integers

来源： https://stackoverflow.com/questions/42763487/best-way-to-store-256-bit-avx-vectors-into-unsigned-long-integers

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/62022827/attributeerror-module-tensorflow-has-no-attribute-compat