英特尔® SIMD 流指令扩展

PUSH and POP of XMM/YMM registers

Hi,

I have written a function in that AVX2 instructions are using XMM/YMM registers. Due to use of some of these registers in this function, causing other part of application is crashing. I have observed strange behavior is that If these registers are pushed and popped as like non-volatile general purpose registers are pushed and popped.

Please help me whether, we need to push and pop the SIMD registers also. If so all XMM/YMM registers are needs to be saved and how?

instructional change __m128i

Hi, good afternoon.

I am using a __m128i for store 16 elements of 8 bits

__m128i s0 = _mm_set_epi8(pixelsTemp[95], pixelsTemp[94], pixelsTemp[93], pixelsTemp[92], pixelsTemp[91], pixelsTemp[90], pixelsTemp[89], pixelsTemp[88], pixelsTemp[87], pixelsTemp[86], pixelsTemp[85], pixelsTemp[84], pixelsTemp[83], pixelsTemp[82], pixelsTemp[81], pixelsTemp[224]);

Optimizing Big Data processing with Haswell 256-bit Integer SIMD instructions

Big Data requires processing huge amounts of data. Intel Advanced Vector Extensions 2 (aka AVX2) promoted most Intel AVX 128-bits integer SIMD instruction sets to 256-bits. Intel AVX brought 256-bits floating-point SIMD instructions, but it didn't include 256-bits integer SIMD instructions. Intel AVX2 allows you to operate with the AVX 256-bits wide YMM register for integer data types. In this post, I’ll explain how developers can speedup big data processing with the new 256-bits integer SIMD instructions.

Address Sanitizer (ASAN) Tool to Debug Memory Corruptions in Chrome OS*

by Sameer Kibey

Overview

Address Sanitizer is a fast memory error detector based on compiler instrumentation (LLVM). This tool is extensively used by Google developers for their internal debug and can detect the following types of bugs:

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  • 英特尔® SIMD 流指令扩展
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  • SDE emulation issue

    I am using the SDE emulator with AVX2 instruction set, I have written some simple program but it is crashing in RELEASE mode with SDE emulator.

    Please let me know whether SDE emulates the stack related operations or not.  YASM synatxed assembly programming

    section .txt
     global dummy_asm
        dummy_asm:

        push rbp
        mov  rbp, rsp
        sub rsp, 1024
        
        push rbx ;no need to push in this program, but in actual program using this register
        
        vmovdqu [rsp], xmm0 ;xmm0 is dummy value

        pop rbx

    Intel Software Conference 2014

     A Intel Software Brasil realizou neste mês o Intel Software Conference 2014, que aconteceu na Universidade Estácio de Sá (Rio de Janeiro) nos dias 26 e 27 de Maio e no IMAM (São Paulo) nos dias 28,29 e 30 de Maio.

    Foram realizadas palestras e "round tables" ministradas por profissionais da Intel do Brasil, Estados Unidos e Alemanha cobrindo dois temas: Computação Paralela e de Alto Desempenho nos primeiros quatro dias (RJ e SP) e Desenvolvimento Android no último dia (somente em São Paulo).  

    Confira logo abaixo os slides das apresentações realizadas.

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  • Broken links for MPX GCC version on the Intel server?

    I'm not sure where else to post issues with downloads so I'm just posting it here. At the following URL https://software.intel.com/en-us/articles/intel-software-development-emu... I'm trying to download the patched version of GCC. The download, however, stops before it is finished. I have tried to download these files from different physical systems, using e.g. Firefox and wget; just to exclude issues on my side. Is there any more recent static version of GCC with MPX available?

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