Virtual Institute — High Productivity Supercomputing

16th VI-HPS Tuning Workshop (EPCC, Edinburgh, Scotland)


Tuesday 29th April - Thursday 1st May, 2014.

Location and How to Get There

The workshop will take place at the University of Edinburgh in Scotland, at EPCC, James Clerk Maxwell Building, Mayfield Road, Edinburgh EH9 3JZ.

Organizing Institutions



This workshop is organized by VI-HPS for the UK PRACE Advanced Training Centre to:

  • 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 on the following topics:

  • Setting up, welcome and introduction
  • Allinea DDT debugger & MAP profiler
  • Score-P instrumentation and measurement
  • Scalasca automated trace analysis
  • Vampir interactive trace analysis

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 09:30 to not later than 18:00 each day, with breaks for lunch and refreshments. There is no fee for participation, however, participants are responsible for their own travel and accommodation.

Classroom capacity is limited, therefore priority will be given to applicants with MPI, OpenMP and hybrid OpenMP+MPI parallel codes already running on the workshop computer systems, and those bringing codes from similar systems to work on.

Programme in Detail

Day 1: Tuesday 29 April
09:00 (registration & set-up of course accounts on Archer)
  • Allinea presentation slides
  • Allinea reading materials and exercises + exercise session3
  • 09:30 Allinea Environment introduction [Patrick Wohlshlegel, Allinea]
  • Getting started with Allinea DDT
  • 11:00 (break)
    11:30 GPU debugging (demo only)
  • Debugging memory errors with Allinea DDT
  • 13:00
    14:00 Debugging incorrect results with Allinea DDT
  • Debugging memory leaks with Allinea DDT
  • 15:30 (break)
    16:00 Allinea MAP demo and free hands-on session
  • Allinea conclusion and wrap up
  • Overview of VI-HPS Tuning Workshop
  • Introduction to VI-HPS [Brian Wylie, JSC]
  • 17:30 (adjourn)

    Day 2: Wednesday 30 April
    09:30 Introduction to parallel performance engineering [Brian Wylie, JSC]
  • Building & running BT-MZ on Archer Cray XC30
  • Score-P instrumentation & measurement [Joseph Schuchart, TU Dresden]
  • 11:00 (break)
    11:30 CUBE profile analysis report exploration [Brian Wylie, JSC]
  • Score-P configuration & customisation [Joseph Schuchart, TU Dresden]
  • 13:00 (lunch)
    14:00 Coaching to apply tools to profile participants' own code(s)
    15:30 (break)
    16:00 Parallel execution performance analysis diagnosis & tuning
    17:30 (adjourn)

    Day 3: Thursday 1 May
    09:30 Scalasca automated trace analysis [Brian Wylie, JSC]
    11:00 (break)
    11:30 Vampir interactive trace analysis [Joseph Schuchart, TU Dresden]
    13:00 (lunch)
    14:00 Coaching to apply tools to trace participants' own code(s).
    15:30 (break)
    16:00 Parallel execution performance analysis diagnosis & tuning
    17:30 (adjourn)


    Hardware and Software Platforms

    ARCHER: Cray XC30 with 3008 compute nodes consisting of two 12-core Intel E5-2697 (Ivy Bridge) processors sharing 64GB (or 128GB) of NUMA memory, Aries dragonfly interconnect, Cray MPI, Cray, GCC & Intel compilers, PBS Pro job management system. Training accounts will be provided!

    Other systems where up-to-date versions of the tools are installed can also be used when preferred, though support may be limited. Participants are expected to already possess user accounts on non-local systems they intend to use, and should be familiar with the procedures for compiling and running parallel applications.


    Registration is via the PRACE training portal. Note: the number of participants is limited, and preference will be given to those bringing parallel application(s) to analyse and tune as part of the workshop.

    • Nearby accommodation is also listed on the PRACE training portal for this event.


    Tuning Workshop Series

    Brian Wylie
    Jülich Supercomputing Centre
    Phone: +49 2461 61-6589

    Local Arrangements

    David Henty
    University of Edinburgh
    Phone: +44 131 650-5960