2021-06-14 VI-HPS Tuning Workshop (hhps1s21)

Registration

Please register via the PRACE registration page https://events.prace-ri.eu/event/1207/

Goals

This workshop organised by VI-HPS and LRZ as a PRACE training event will:

• give an overview of the VI-HPS programming tools suite
• explain the functionality of individual tools, and how to use them effectively
• offer hands-on experience and expert assistance using the tools

On completion participants should be familiar with common performance analysis and diagnosis techniques and how they can be employed in practice (on a range of HPC systems). Those who prepared their own application test cases will have been coached in the tuning of their measurement and analysis, and provided optimization suggestions.

Programme Overview

Presentations and hands-on sessions are planned on the following topics:

• Setting up, welcome and introduction
• mpiP lightweight MPI profiling
• TAU performance system
• MAQAO performance analysis & optimisation
• Score-P instrumentation and measurement
• Scalasca automated trace analysis
• Paraver/Extrae/Dimemas trace analysis and performance prediction
• Extra-P automated performance modeling
• [k]cachegrind cache utilisation analysis
• ... and potentially others to be added

A brief overview of the capabilities of these and associated tools is provided in the VI-HPS Tools Guide.

The workshop will be held in English and run from 09:00 to not later than 18:00 each day, with breaks.

Participants are encouraged to prepare their own MPI, OpenMP and hybrid MPI+OpenMP parallel application codes for analysis.

Programme in Detail (provisional) - all times given as CEST (UTC+2)

Hardware and Software Platforms

IvyMUC

• 8-way Ivy Bridge-based Linux Cluster
• FDR14 Infiniband interconnect
• 31 nodes, 16 cores per node
• 64 GB DDR Memory per node
• Operating System: SUSE Linux Enterprise Server (SLES) 12 SP5
• Compilers: Intel icc, icpc, ifort 19.0
• Intel MPI

The local HPC system IvyMUC is the primary platform for the workshop and will be used for the hands-on exercises. Course accounts will be provided during the workshop to participants without existing accounts. Other systems where up-to-date versions of the tools are installed can also be used when preferred, though support may be limited and participants are expected to already possess user accounts on non-local systems. Regardless of whichever external systems they intend to use, participants should be familiar with the relevant procedures for compiling and running their parallel applications (via batch queues where appropriate).

Contact

Sponsors

This workshop is a PRACE training event, organised by LRZ and VI-HPS for the Gauss Centre for Supercomputing.

Prerequisites

Basic MPI and OpenMP knowledge as presented in the LRZ course "Parallel programming of High Performance Systems".

Hands-On

The LRZ IvyMUC cluster is the primary platform for the workshop and will be used for the hands-on exercises.

Language

English

Prices and Eligibility

The course is open and free of charge for people from academia and industry.