Optimisation Techniques @ NUS II

This workshop provides an in-depth analysis of the factors which affect the performance of compute-intensive applications. The concepts will be demonstrated with hands-on examples.

Date:

20 February 2019

Venue:

CIT Auditorium Information Technology, Level 2 2 Engineering Drive 4 National University of Singapore Singapore 117584

Closed

Overview

This workshop provides an in-depth analysis of the factors which affect the performance of compute-intensive applications. The concepts will be demonstrated with hands-on examples.

  • Introduction and brief summary of topics from Optimisation Techniques Part I
  • Further information on the hardware architecture
    • Sockets, Cores, Caches and NUMA
    • InfiniBand network
  • Arithmetic intensity and the roofline model
  • Process and thread affinity
  • Advanced compiler options
    • Requirements for vectorizable loops
    • Architecture-specific optimisation
    • Precision and reproducibility
    • Options for correctness checking and debugging
  • MPI Optimisation
    • Gathering communication statistics
    • Improving MPI communication
  • A valid user account on NSCC system, ASPIRE1
  • Laptop for use in hands-on sessions
  • Familiarity with topics covered by Introductory Class (connecting to system, editing files in Linux and submitting jobs)
  • Familiarity with topics covered by Optimisation Techniques I

After this course, a user should have a good understanding of the factors which limit the performance of compute-intensive applications and knowledge of the techniques which can be used to improve that performance.