Performance analysis

Understanding How General Exploration Works in Intel® VTune™ Amplifier XE

The General Exploration Analysis Type in Intel® VTune™ Amplifier XE is used to detect microarchitectural hardware bottlenecks in an application or system. General Exploration uses hardware event counters to detect and locate issues and presents the data in a user-friendly and actionable format. This article will explain the mechanisms used in this analysis, a few best-known-methods for interpreting the results, and the various complexities and issues that arise when doing this type of analysis.

The Mechanisms behind General Exploration

 

  • Desenvolvedores
  • Intel® VTune™ Amplifier
  • Intel® VTune™ Amplifier XE
  • Intel VTune Amplifier
  • optimization
  • Performance analysis
  • Ferramentas de desenvolvimento
  • Otimização
  • Computação paralela
  • Thread
  • Memory Conflicts in Functional-Decomposition Problems


    Challenge

    Identify memory conflicts in a functional-decomposition problem to identify data-restructuring requirements. This procedure is part of the design phase for threaded applications that is necessary in order to identify issues that could cause performance degradation.

  • Intel® Thread Checker
  • OpenMP*
  • Performance analysis
  • Computação paralela
  • Thread
  • Pipeline Speak, Part 2: The Second Part of the Sandy Bridge Pipeline

    Last week I posted a blog explaining the front-end of the pipeline on Intel® Microarchitecture Codename Sandy Bridge. Today's blog completes the discussion of the pipeline by explaining the back-end, and then why it's helpful to know this stuff in general.

    The Back-End

    Performance Analysis Methodology for Intel® Microarchitecture Codename Sandy Bridge Video

    This video explains the tuning methodology we recommend for using Intel® VTune™ Amplifier XE to tune software on Intel® Microarchitecture Codename Sandy Bridge.
  • Desenvolvedores
  • Intel® VTune™ Amplifier XE
  • Performance analysis
  • Sandy Bridge Architecture
  • Otimização
  • Upcoming Webinars on Performance Tuning on Intel® Microarchitecture Codename Sandy Bridge

    I will be presenting a 2-part webinar on Nov 8th and 9th on performance tuning on Intel® Microarchitecture Codename Sandy Bridge. The webinars will walk through our Using Intel® VTune™ Amplifier XE on Sandy Bridge tuning guide. In each one I will walk through half of the guide, explaining the concepts and taking live questions.

    Detect Stalls Due to Exceeding Write-Combining Store Buffers on Hyper-Threading Technology-Enabled Systems


    Challenge

    Determine whether performance degradation (or lower-than-expected performance benefit) from Hyper-Threading Technology is due to exceeding the write-combining buffer capacity. A write-combining (WC) store buffer accumulates multiple stores in the same cache line before eventually writing the combined data farther out into the memory hierarchy, to accelerate processor write performance.

  • Multi-thread apps for Multi-Core
  • How to thread?
  • Performance analysis
  • Computação paralela
  • What we’ve been doing to make performance analysis easier on Intel® Microarchitecture Codename Sandy Bridge

    New Intel® Microarchitecture Codename Sandy Bridge support and tuning guide!
    We’ve been listening to your feedback on software tuning. Specifically, we’ve been working to make it even easier for developers to analyze software performance on Intel® Microarchitecture Codename Sandy Bridge.

    Assine o Performance analysis