Performance Analysis and Optimisation
Instructor: Ilya Zhukov
Jülich Supercomputing Centre (JSC)
Jülich Research Centre
i.zhukov@fz-juelich.de
Ilya Zhukov is an HPC applications analyst at Jülich Supercomputing Centre (JSC) at Jülich Research Centre, based in Germany. His main focus is to help researches and developers of HPC applications to gain in-depth understanding into the performance of HPC applications, identify limiting factors, and provide feedback to improve the efficiency of HPC applications on current and potentially future systems. Besides he teaches on topics in performance analysis and usage of performance analysis tools.
Archived Presentation
Recording: Performance Analysis
Recording: Optimization
Description
Performance analysis and optimisation of a parallel application can be a difficult task, and often it is not clear where to start. For instance, we might ask if the chosen communication pattern is efficient enough? Does my application suffer from load imbalance? Does the way computational work is divided is a problem? Or does something else impact performance? During this session you will learn basic ideas about performance engineering. You will get acquainted with different ways and tools for performance measurement. During hands-on you will try to collect, analyse and interpret measurements of a prepared benchmark.
Preparation
- Please check and fulfill prerequisites prior to the hands-on sessions
Course Content
Monday 26th July
Tuesday 27th July
- BT-MZ reference run
- Score-P: basics
- Score-P: scoring and filtering
- Explore profile with CUBE
- Score-P: advanced
- Scalasca: trace collection and analysis
- Vampir, Tau, Darshan
- VI-HPS and POP
Hands-on
Prepared measurements
How to get AWS instance