Virtual Institute – High Productivity Supercomputing

17th VI-HPS Tuning Workshop (HLRS, Stuttgart, Germany)

Date

Monday 23rd - Friday 27th February 2015.

Location

The workshop will take place at HLRS, High Performance Computing Center Stuttgart, Universität Stuttgart, Stuttgart, Germany in the big seminar room.

Organizing Institutions

HLRS PRACE

Goals

This workshop organized by VI-HPS for the German PRACE Advanced Training Centre hosted by HLRS 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

Programme Overview

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

  • Setting up, welcome and introduction
  • Score-P instrumentation and measurement
  • Scalasca automated trace analysis
  • Vampir interactive trace analysis
  • Periscope automated performance analysis
  • Paraver trace analysis and performance prediction
  • MAQAO performance analysis & optimization
  • MUST runtime error detection for MPI
  • MAP profiling and performance reports
  • Cray performance analysis tools

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. For participants from public research institutions in PRACE countries, the course fee is sponsored through the PRACE PATC program. All participants are responsible for their own travel and accommodation.

Classroom capacity is limited, therefore priority will be given to applicants with parallel codes already running on the workshop computer system (Hornet), and those bringing codes from similar Cray systems to work on. Participants are therefore encouraged to prepare their own MPI, OpenMP and hybrid MPI+OpenMP parallel application codes for analysis.

TW17@HLRS class front TW17@HLRS class back

Programme

Day 1: Monday 23 February
09:00 (registration & set-up of course accounts on workshop computers)
09:30 Welcome
  • Introduction to VI-HPS & overview of tools [José Gracia, HLRS]
  • Computer systems and software environment [José Gracia, HLRS]
  • Building and running NPB-MZ-MPI on Hornet [Ilya Zhukov, JSC]
  • Introduction to parallel performance engineering [José Gracia, HLRS]
  • 10:45 (break)
    11:15 Allinea performance tools suite [Florent Lebeau, Allinea]
  • Allinea hands-on exercises
  • 12:45 (lunch)
    13:45 Hands-on coaching to apply tools to analyze participants' own code(s).
    17:30 Review of day and schedule for remainder of workshop
    18:00 (adjourn)
    19:30 Social event: Guided city walk followed by Swabian dinner at Brauhaus Calwer-Eck (Calwar Str. 31, Stuttgart)

    Day 2: Tuesday 24 February
    09:00 MAQAO performance analysis tools [Andres Charif-Rubial, UVSQ]
  • MAQAO hands-on exercises
  • 10:30 (break)
    11:00 Cray performance analysis tools (Part1, Part2) [Aniello Esposito, Cray]
  • Cray hands-on exercises
  • 12:45 (lunch)
    13:45 Hands-on coaching to apply tools to analyze participants' own code(s).
    17:30 Review of day and schedule for remainder of workshop
    18:00 (adjourn)

    Day 3: Wednesday 25 February
    09:00 Score-P instrumentation & measurement toolset [Ronny Tschüter, TUD]
  • Score-P hands-on exercises
  • CUBE profile explorer hands-on exercises [Ilya Zhukov, JSC]
  • 10:30 (break)
    11:00 Score-P analysis scoring & measurement filtering  [Ronny Tschüter, TUD]
  • Measuring hardware counters and other metrics 
  • Scalasca automated trace analysis [Ilya Zhukov, JSC]
  • Scalasca hands-on exercises
  • 12:45 (lunch)
    13:45 Hands-on coaching to apply tools to analyze participants' own code(s).
    17:30 Review of day and schedule for remainder of workshop
    18:00 (adjourn)

    Day 4: Thursday 26 February
    09:00 Vampir interactive trace analysis [Tobias Hilbrich, TUD]
  • Vampir hands-on exercises
  • 10:30 (break)
    11:00 Paraver tracing tools suite [Judit Gimenez & Germán Llort, BSC]
  • Paraver hands-on exercises
  • 12:45 (lunch)
    13:45 Hands-on coaching to apply tools to analyze participants' own code(s).
    17:30 Review of day and schedule for remainder of workshop
    18:00 (adjourn)

    Day 5: Friday 27 February
    09:00 Periscope Tuning Framework [Yury Oleynik & Michael Firbach, TUM]
  • Periscope hands-on exercises
  • 10:30 (break)
    11:00 MUST runtime error detection [Joachim Protze, RWTH]
  • MUST hands-on exercises
  • Review
    12:45 (lunch)
    13:45 Hands-on coaching to apply tools to analyze participants' own code(s).
    17:00 (adjourn)
     

    Hardware and Software Platforms

    Hornet: 21-cabinet Cray Cascade XC40 system:

    • 3944 compute nodes each with two Intel Xeon E5-2680v3 'Haswell' processors (2.50GHz, 12 cores per processor, 2 hardware threads per core) and 128 GB memory
    • network: Aries dragonfly interconnect
    • software: Cray lightweight CNL kernel & MPI; Cray CCE, GCC and Intel compilers

    The local HPC system Hornet 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 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 PRACE training portal (or alternate form for those outside Europe and not from academia): the number of participants is limited and selection made based on the information provided when registering.

    Contact

    Tuning Workshop Series

    Brian Wylie
    Jülich Supercomputing Centre
    Forschungszentrum Jülich GmbH
    Phone: +49 2461 61-6589
    Email: b.wylie[at]fz-juelich.de
       

    Local Arrangements

    José Gracia
    High Performance Computing Center Stuttgart
    Universität Stuttgart
    Phone: +49 711 685-87208
    Email: gracia[at]hlrs.de

    Sponsors

    PRACE This workshop is a PRACE Advanced Training Centre (PATC) course, organised by HLRS & JSC for the Gauss Centre for Supercomputing.