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  1. ISA 扩展、 英特尔AVX | 英特尔® 开发人员专区

    https://software.intel.com/zh-cn/isa-extensions/intel-avx

    英特尔® AVX 是一个针对英特尔® SIMD 流指令扩展的全新256 位扩展指令集,专为 浮点密集型应用而设计。 它于2011 年年初作为第二代英特尔® 酷睿™ 处理器 ...

  2. AVX Optimizations and Performance: VisualStudio vs GCC

    https://software.intel.com/zh-cn/forums/intel-isa-extensions/topic/475462

    Greetings, I have recently written some code using AVX function calls to perform a convolution in my software. I have compiled and run this code on two ...

  3. Avx vs avx2

    https://software.intel.com/zh-cn/forums/intel-visual-fortran-compiler-for-windows/topic/624461

    2016年4月13日 ... Hoping to minimize use of multiple isa target options, I made some comparison of avx vs. Avx2 performance on haswell to characterize where ...

  4. AVX horizontal sum and store

    https://software.intel.com/zh-cn/forums/intel-isa-extensions/topic/346695

    The next thing is how to store only, one value of an AVX register. In SSE I just used _mm_store_sd. I could do a cast from __m256d to __m128d and use SSE ...

  5. Illegal instruction when running AVX program

    https://software.intel.com/zh-cn/node/593307

    I used icpc to compile an AVX program with instruction such as _mm256_maskload_epi32. The program compiles and links fine. When I run it, I got "Illegal ...

  6. Do the Intel 11.1 compilers support AVX?

    https://software.intel.com/zh-cn/forums/intel-isa-extensions/topic/295887

    Title says it all. Just wondering if the 11.1 version of the intel C and Fortran compilers generate AVX code? Can someone verify this? Thanks for any assistance.

  7. AVX-512 expectations

    https://software.intel.com/zh-cn/forums/intel-isa-extensions/topic/404037

    What isn't clear from this announcement is whether the future Xeon processor with AVX-512 support will actually be a socketed MIC, or a CPU (more precisely ...

  8. Interpreting the AVX counter results

    https://software.intel.com/zh-cn/forums/intel-vtune-amplifier-xe/topic/277877

    As far as I understand during execution of packed AVX instructions the vector can be filled just partly. Is there a way to determine whether a vector was ...

  9. PDEP/PEXT operations for AVX

    https://software.intel.com/zh-cn/forums/intel-isa-extensions/topic/370419

    Hi, I was wondering if Intel engineers would consider adding certain BMI instructions to AVX. In particular, I think vector variants of PDEP and PEXT would be of ...

  10. MKL Library: AVX vs SSE

    https://software.intel.com/zh-cn/node/625043

    2016年4月18日 ... Hi, I want to measure the performance difference between SSE2 and AVX implementations for a neural network application. I am using Intel ...

  11. knowing whether AVX or AVX2 is used.

    https://software.intel.com/zh-cn/forums/intel-isa-extensions/topic/606741

    2016年1月13日 ... Hi, Recently I did a Vtune analysis on a machine that support both avx & avx2 instructions. In the Vtune profile I saw the function ...

  12. 在不编写AVX 代码的情况下使用AVX | 英特尔® 开发人员专区

    https://software.intel.com/zh-cn/articles/using-avx-without-writing-avx-code

    2012年3月7日 ... Using AVX Without Writing AVX Code (PDF 260KB) 摘要英特尔® 高级矢量扩展 指令集(AVX)是一套针对英特尔® SIMD 流指令扩展(英特尔® ...

  13. AVX: _mm_alignr_epi8 equivalent for YMM registers

    https://software.intel.com/zh-cn/forums/intel-isa-extensions/topic/283576

    Hello,I am looking for an equivalent to the most useful intrinsic_mm_alignr_epi8 with AVX registers (I guess its equivalent to PALIGNR or VPALIGNR for the one ...

  14. intel xe composer compiler with AVX code

    https://software.intel.com/zh-cn/forums/intel-isa-extensions/topic/607403

    2016年1月25日 ... When I compiled a sample of matrix multiplication with intel xe composer 2013 sp1 compiler using inline assembly avx code with visual c 2013 ...

  15. AVX - Vector shifts

    https://software.intel.com/zh-cn/forums/intel-isa-extensions/topic/343530?language=en

    I'm comparing two programmes, one is written using SSE and the other one AVX. My aim is to show that the avx version is running 2 times faster but I'm loosing ...

  16. Choosing between AVX and SSE2 at run time

    https://software.intel.com/zh-cn/node/594543

    In my case, my processor has AVX instructions available, but I would like to test the SSE2 path as well. Is there any way I can do this, or must I just run on a ...

  17. How Profile a program that have avx instructions

    https://software.intel.com/zh-cn/forums/intel-isa-extensions/topic/605197

    2015年12月18日 ... Hi, there is a tool or a Visual Studio plugin that give me how many SSE/AVX instructions there are in my code? How many SIMD Instruction I've ...

  18. 避免AVX-SSE 转换造成的性能损失| 英特尔® 开发人员专区

    https://software.intel.com/zh-cn/articles/avoiding-avx-sse-transition-penalties

    2012年2月23日 ... 避免AVX-SSE 转换造成的性能损失(PDF 678 KB) 由于硬件必须保存和恢复YMM 寄存器的上层128 位,因此一个程序中256 位英特尔® AVX 指令与 ...

  19. axAVX build crashes in Non-AVX Intel processor

    https://software.intel.com/zh-cn/forums/intel-c-compiler/topic/518520

    Hi, I need to build with option -axAVX using Intel compiler(ICPC C++ compiler),so that i can run on AVX supported Intel processor and also in non-AVX Intel ...

  20. Performance Issues on AVX Instructions

    https://software.intel.com/zh-cn/forums/intel-isa-extensions/topic/280799

    It seems that the broadcast sets the saved flag in the avx status reg and the AVX instructions in the loop never clear this flag and all following AVX instructions ...

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