Basic OMP Parallelized Program Not Scaling As Expected

#include <iostream>
#include <vector>
#include <stdexcept>
#include <sstream>
#include <omp.h>

std::vector<int> col_sums(std::vector<std::vector<short>>& data) {
    unsigned int height = data.size(), width = data[0].size();
    std::vector<int> totalSums(width, 0), threadSums(width, 0);

    #pragma omp parallel firstprivate(threadSums)
        #pragma omp parallel for
        for (unsigned int i = 0; i < height; i++) {
            threadSums.data()[0:width] += data[i].data()[0:width];

使用分层为英特尔® Galileo开发板创建Yocto镜像

本文介绍了如何从源代码为英特尔® Galileo 开发板(英特尔® 物联网开发人员套件的一部分)创建映像。 首先,需要获取编译映像需要使用的多个层。 您需要有足够大的磁盘空间 (~20GB),并且需要运行 最新的 64 位版 Linux* 操作系统。 我们在 Debian 7 和 openSUSE 12 上进行了尝试,希望其他系统上也能够运行。

该映像基于 poky 的 'daisy' 分支:
$ git clone --branch daisy git://git.yoctoproject.org/poky iotdk
$ cd iotdk

添加几个层 :
$ git clone git://git.yoctoproject.org/meta-intel-quark
$ git clone --branch daisy git://git.yoctoproject.org/meta-intel-iot- middleware
$ git clone git://git.yoctoproject.org/meta-intel- galileo

Promlems with Intel MPI

I have trouble with running Intel MPI on cluster with different different numbers of processors on nodes (12 and 32).

I use Intel MPI 4.0.3 and it works correctly on 20 nodes with 12 processors (Intel(Xeon(R)CPU X5650 @2.67)) at each, and all processors works correctly, then I try to run Intel MPI on other 3 nodes with 32 processors (Intel(Xeon(R)CPU E5-4620 v2@2.00) at each and they work correctly too.

Intel® Edison Audio Setup Guide

This document provides information about the audio subsystem on the Intel® Edison platform. It also provides hardware/software overviews. The audio features described in the document can be used with the latest firmware available on the Intel® Edison Software Downloads page.

The complete document is in a PDF.


  • Développeurs
  • Projet Yocto
  • Internet des objets
  • Avancé
  • Débutant
  • Intermédiaire
  • Son
  • Flash Tool Lite User Manual


    This document explains the installation procedure Flash Tool Lite for Windows*, Linux* and Mac* hosts. The tool is used to flash the firmware on Intel® Edison boards, but will expand to other IoT products in the future. Formerly, this tool was used in working with Intel® based phones and tablets for updates and now has been adapted for use on IoT products.

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  • 使用英特尔® 软件开发仿真器(英特尔® SDE)计算 “FLOP”


    作为分析指标和/或基于性能指标评测目的,浮点运算 (FLOP) 速度广泛运用于高性能计算 (HPC) 社区。 许多 HPC 贡献者(比如戈登·贝尔)要求提交应用时注明 FLOP 速度。

    本文所述的方法不依赖于性能监控单元 (PMU) 事件/计数器。 它是一种使用英特尔® SDE 评估 FLOP 的替代性软件方法。

  • Développeurs
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  • Étudiants
  • Linux*
  • Serveur
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  • Intel® Software Development Emulator
  • FLOP
  • Knight’s Landing
  • Intel® SDE
  • HPC
  • Floating point operations
  • Intel® Xeon Phi™ Coprocessor
  • Intel® Core™ processor family
  • Intel® Many Integrated Core Architecture
  • S’abonner à Avancé