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Excellent Power Management Reference

Dear passionate power management reader,

Doing an internet scan for material having to do with power management policy, my next blog series, I ran across a blog that I believe to be excellent. As many of you have discovered, I generally write at a pretty high level, though technical. I do this intentionally. At the beginning of my blogging career, there was not much written about power management that was comprehensible to a competent engineer who was not a power expert.

Intel® Xeon Phi™ coprocessor Power Management Configuration: Using the micsmc command-line Interface

Previous blogs on power management and a host of other power management resources can be found in, “List of Useful Power and Power Management Articles, Blogs and References” at http://software.intel.com/en-us/articles/list-of-useful-power-and-power-management-articles-blogs-and-references.

INTRODUCTIONS: TEMPERATURE SENSORS AND THE COPROCESSOR

Intel® Xeon Phi™ coprocessor Power Management Configuration: Using the micsmc GUI Interface

Previous blogs on power management and a host of other power management resources can be found in, “List of Useful Power and Power Management Articles, Blogs and References” at http://software.intel.com/en-us/articles/list-of-useful-power-and-power-management-articles-blogs-and-references. See [LIST] below in the reference section.

HOW DO WE CONFIGURE COPROCESSOR POWER MANAGEMENT

Understanding Gather-Scatter instructions and the -gather-scatter-unroll compiler switch

Gather-Scatter instructions may not be the optimal choice of instructions when you are trying to achieve superior performance on the Intel® Xeon Phi™ coprocessor.  However, if your code uses indirect addressing or performs non-unit strided memory accesses, gather-scatter instructions may be the best option.

  • Sviluppatori
  • Professori
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  • Avanzato
  • Compilatore C++ Intel®
  • Compilatore Fortran Intel®
  • MIC
  • Xeon Phi
  • Architettura Intel® Many Integrated Core
  • Quick Start Guides Published for the Intel® Xeon Phi™ Coprocessor Expert User

    This is a short notice to let you know that two new articles have been published for the Intel® Xeon Phi™ coprocessor: * Quick Start Guide: For the Intel Xeon Phi Coprocessor Administrator * Quick Start Guide: For the Intel Xeon Phi Coprocessor Developer The target of both of these guides is the expert user. Our assumption is that the expert user does not need to be told what to do, as he already has potentially decades of experience doing his job. Similarly, he does not need to be told how to research his area of expertise as he has done so dozens of times in the past. As these users are new to administering or developing on the Intel Xeon Phi coprocessor, they want to know only where they can find key resources, such as cluster administration guides, technical support and examples.

    Power Configuration Part 0: Introduction: Yikes, there is a lot that is not documented

    I was hoping to write a brief two part overview of how to configure the various power settings for the Intel® Xeon Phi™ coprocessor. It was going to be concise and brief, allowing me to get on to the next topic. Unfortunately, as I dug into the topic further, I discovered that much of it is not very well documented. I found myself essentially writing quite a bit of explanation.

    As usual, I am starting off writing this as a series of blogs. At a later point, I will reformat the blogs into a more formal article with any semblance of humor removed.

    Compiling Open Source for Intel® Xeon Phi™ Coprocessors

    One of the strengths of the Intel® Xeon Phi™ coprocessor is the ability to build existing software to run on the Intel® Many Integrated Core (Intel® MIC) architecture with a minimum of change (in most cases, no changes to the code itself are necessary). The same cannot always be said, however, for the build systems used to compile existing software packages.

  • open source
  • autotools
  • cmake
  • MIC
  • Intel Xeon Phi
  • Architettura Intel® Many Integrated Core
  • 使用idb调试Intel® Xeon Phi协处理器上的本地应用程序

    在使用idb对运行在Intel® Xeon PhiTM协处理器上的本地应用程序(Native Code)进行调试之前首先需要建立起调试器的运行环境。该环境的设置也被包含在Intel®编译器的环境设置脚本中,所以可以通过运行下面的命令建立Intel®编译器和调试器的使用环境:
    $ source /opt/intel/composerxe/bin/compilervars.sh intel64

    和主机程序的调试一样,我们需要在生成协处理器本地应用程序的编译命令行中加上”-g”选项让编译器生成带有调试符号的可执行程序;然后将可执行程序上传到协处理器系统并确认该程序可以正常启动执行。

    接下来在主机环境中启动远程调试器:
    idbc_mic -tco -rconnect=tcpip:coprocessor-ip-address:port
    缺省情况下的端口号是2000

    例如:当协处理器使用缺省的网络配置时启动对第一个Intel® Xeon PhiTM协处理器进行调试的命令行就是:
    idbc_mic -tco -rconnect=tcpip:mic0:2000

  • Sviluppatori
  • Studenti
  • Linux*
  • C/C++
  • Fortran
  • Intel® Parallel Studio XE
  • intel debugger
  • Intel Xeon Phi
  • MIC
  • Debugging
  • Strumenti di sviluppo
  • Architettura Intel® Many Integrated Core
  • Elaborazione parallela
  • Migrating Fortran projects to the Intel® Xeon Phi™ coprocessor

    This article focuses on aspects of porting Fortran codes to the Intel® Xeon Phi™ coprocessor.  Most of the documentation for the coprocessor is C/C++ centric. Here the focus is on Fortran, which is still the dominant language for scientific programming and for which a large amount of legacy code exits.

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