Virtual Institute — High Productivity Supercomputing

44th VI-HPS Tuning Workshop (RWTH Aachen and ZIH, TU Dresden, Germany) - Hybrid

Date

Monday 26th February - Friday 1st March 2024

Location

The workshop will take place both in RWTH Aachen and in TU Dresden. Remote participation will also be possible.

  • In Aachen: Seminarraum 004, Kopernikusstraße 6, 52074 Aachen
  • In Dresden: Zentrum für Informationsdienste und Hochleistungsrechnen (ZIH), TU Dresden, Willers-Bau, PC-Pool WIL-A119, 0.Etage , Zellescher Weg 12, 01069 Dresden

Organising Institutions

RWTH ZIH

Goals

This workshop organised by VI-HPS the NHR centers RWTH Aachen & ZIH, TU Dresden 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
  • TAU performance system
  • MAQAO performance analysis & optimisation
  • Score-P instrumentation and measurement
  • CUBE profile processing and exploration
  • Scalasca automated trace analysis
  • Vampir interactive trace analysis
  • Likwid performance tool suite
  • PIKA hardware performance monitoring stack
  • lo2s lightweight performance monitoring tool for Linux
  • ... 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 for lunch and refreshments.

Classroom capacity is limited, therefore priority may be given to applicants with parallel codes already running on the workshop computer system (), and those bringing codes from similar Linux cluster systems to work on. 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 CET (UTC+1)

Day 1: Monday 26 February
09:00 Welcome [Marc-André Hermanns, RWTH]
  • Introduction to VI-HPS & overview of tools
  • Introduction to parallel performance engineering
  • CLAIX Computer system and software environment
  • Barnard Computer system and software environment
  • Building and running NPB/BT-MZ on Barnard
  • 10:30 (break)
    11:00 Job Monitoring using JMS (RWTH)
    Job Monitoring using PIKA (ZIH)
  • PIKA / JMS hands-on exercises
  • 12:30 (lunch)
    14:00 Hands-on coaching to port participants' own code(s) to the local systems.
    15:30 (break)
    16:00 Hands-on coaching to port participants' own code(s) to the local systems.
    17:30 (adjourn)
    Day 2: Tuesday 27 February
    09:00 LIKWID performance tool suite [Thomas Gruber, FAU]
  • LIKWID hands-on exercises (LIKWID quick reference)
  • 10:30 (break)
    11:00 MAQAO performance analysis framework [Cédric Valensi, UVSQ]
  • MAQAO hands-on exercises (MAQAO quick reference)
  • 12:30 (lunch)
    14:00 Hands-on coaching to apply LIKWID and MAQAO to analyze participants' own code(s).
    15:30 (break)
    16:00 Hands-on coaching to apply LIKWID and MAQAO to analyze participants' own code(s).
    17:30 (adjourn)
    Day 3: Wednesday 28 February
    09:00 Score-P instrumentation & measurement toolset [William Williams, TUD]
  • Score-P analysis scoring & measurement filtering
  • Score-P hands-on exercises
  • CUBE profile explorer hands-on exercises [Michael Knobloch, JSC]
  • 10:30 (break)
    11:00 Score-P specialized instrumentation and measurement [Bert Wesarg, TUD]
  • Score-P hands-on exercises
  • 12:30 (lunch)
    14:00 Hands-on coaching to apply Score-P to analyze participants' own code(s).
    15:30 (break)
    16:00 TAU performance system [Sameer Shende, UOregon]
  • TAU hands-on exercises
  • 17:30 (adjourn)
    Day 4: Thursday 29 February
    09:00 Scalasca automated trace analysis [Markus Geimer & Michael Knobloch, JSC]
  • Scalasca hands-on exercises
  • 10:30 (break)
    11:00 Hands-on coaching to apply Score-P & Scalasca to analyze participants' own code(s).
    12:30 (lunch)
    14:00 Hands-on coaching to apply Score-P & Scalasca to analyze participants' own code(s).
    15:30 (break)
    16:00 Hands-on coaching to apply TAU to analyze participants' own code(s).
    17:30 (adjourn)
    Day 5: Friday 1 March
    09:00 Vampir interactive trace analysis [Bert Wesarg, TUD]
  • Vampir hands-on exercises
  • 10:30 (break)
    11:00 Io2s [Christian von Elm, TUD]
  • Io2s hands-on exercises
  • Review
    12:30 (lunch)
    14:00 Hands-on coaching to apply Vampir & Io2s to analyze participants' own code(s).
    15:30 (break)
    16:00 Hands-on coaching to apply tools to analyze participants' own code(s).
    17:30 (adjourn)
     

    Hardware and Software Platforms

    The local HPC systems Claix-2023 and Barnard are the primary platforms 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).

    Registration

    Registration via the course website for both locations (select location in registration form). Registration deadline is 16th February 2024.

    Hotels in Aachen

    Hotels in Dresden

    Contact

    Local Arrangements Dresden

    Anja Gerbes
    TU Dresden
    Email: anja.gerbes[at]tu-dresden.de
       

    Local Arrangements Aachen

    Marc-André Hermanns
    RWTH Aachen University
    Email: hermanns[at]itc.rwth-aachen.de
       

    Tuning Workshop Series

    Cédric Valensi
    Université de Versailles Paris Saclay
    Email: cedric.valensi[at]uvsq.fr