Recent questions tagged intel

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I'm trying to estimate FLOPS for my application using intel vtune Amplifier and I'm using this post here as ... Any help would be appreciated See Question&Answers more detail:os...

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

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intel - How to read performance counters on i5, i7 CPUs

Modern CPUs have quite a lot of performance counters - http://www.intel.com/content/www/us/en/ ... misses and branch mispredictions. See Question&Answers more detail:os...

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

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intel - How are the gather instructions in AVX2 implemented?

Suppose I'm using AVX2's VGATHERDPS - this should load 8 single-precision floats using 8 DWORD indices. What ... arxiv.org/pdf/1401.7494.pdf See Question&Answers more detail:os...

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

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intel - Why is x86 little endian?

A real question that I've been asking myself lately is what design choices brought about x86 being a little ... of a big endian architecture? See Question&Answers more detail:os...

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

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intel - Where is Clang's '_mm256_pow_ps' intrinsic?

I can't seem to find the intrinsics for either _mm_pow_ps or _mm256_pow_ps, both of which are supposed to be ... header I'm not including? See Question&Answers more detail:os...

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

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intel - Where is the Write-Combining Buffer located? x86

How is the Write-Combine buffer physically hooked up? I have seen block diagrams illustrating a number of ... Is it microarchitecture-dependent? See Question&Answers more detail:os...

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

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