Difference between revisions of "Team Lion F2017"

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===Locks & Waits===
 
===Locks & Waits===

Revision as of 09:49, 5 January 2018

Group Members

Intel Parallel Studio vTune Amplifier

  1. Jagmeet Bhamber
  2. Shivam Gupta
  3. Yong Kuk Kim

What is VTune Amplifier?

  • A tool created by Intel to provide performance analysis on software.
  • Offers both a GUI and command-line version for both Windows and Linux
  • GUI only for OSX
  • Basic features available on both Intel and AMD processors, but advanced features only for Intel

How to use it?

  • Available as a standalone unit or part of the following packages:
    • Intel Parallel Studio XE Cluster Edition and Professional Edition
    • Intel Media Server Studio Professional Edition
    • Intel System Studio

Can be run on a local machine


Hotspots

Basic hotspot analysis

Advanced hotspot analysis

Parallelism

Concurrency

  • Best for visualizing thread parallelism on available cores, finding areas with high or low concurrency, and identifying serial bottlenecks in your code
  • Provides information on how many threads were running at each moment during application execution
  • Includes threads which are currently running or ready to run and therefore are not waiting at a defined waiting or blocking API
  • Also shows CPU time while the hotspot was executing and estimates its effectiveness either by CPU usage or by Threads Concurrency

Results of Concurrency tests on Workshop 6

I ran the Concurrency test on each of the functions in Workshop 6. I isolated each function by commenting out all others, then ran them 1 by 1. This was to get an idea of how they perform on their own. Finally I ran them all together to see how the program runs overall.

matmul_0 (Serial)

Conc-01.png Conc-02.png

matmul_1 (Serial with j-k loops reversed)

Conc-11.png Conc-12.png

matmul_2 (Cilk Plus with cilk_for)

Conc-21.png Conc-22.png

matmul_3 (+array notation, reducer)

Conc-31.png Conc-32.png

matmul_4 (+vectorization)

Conc-41.png Conc-42.png

Final test with all functions

Conc-51.png Conc-52.png

Conc-53.png

Locks & Waits

HPC Performance Characterization

Microarchitecture

General Exploration

Memory Access

references

https://en.wikipedia.org/wiki/VTune

https://software.intel.com/en-us/get-started-with-vtune

https://software.intel.com/en-us/vtune-amplifier-help-analysis-types

https://software.intel.com/en-us/vtune-amplifier-help-basic-hotspots-analysis

https://software.intel.com/en-us/vtune-amplifier-help-advanced-hotspots-analysis

https://software.intel.com/en-us/vtune-amplifier-help-concurrency-analysis

https://software.intel.com/en-us/vtune-amplifier-help-locks-and-waits-analysis

https://software.intel.com/en-us/vtune-amplifier-help-hpc-performance-characterization-analysis

https://software.intel.com/en-us/vtune-amplifier-help-general-exploration-analysis

https://software.intel.com/en-us/vtune-amplifier-help-memory-access-analysis