Team Lion F2017

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

We used our workshop 6 as an example to demonstrate this particular aspect of Intel Vtune Amplifer

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)

matmul_1 (Serial with j-k loops reversed)

matmul_2 (Cilk Plus with cilk_for)

matmul_3 (+array notation, reducer)

matmul_4 (+vectorization)

Final test with all functions

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