23-27 April 2018
LRZ
CET timezone

LRZ  PRACE  VI-HPS-new-small  IT4I-small       

Sponsor

megware-small

Goals

This workshop organized by VI-HPS, LRZ (new VI-HPS member since April 2018) and IT4Innovations 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

To foster the Czech-German collaboration in high performance computing, a contingent of places has been reserved for participants from the Czech Republic.

Programme Overview

The detailed program will be available on the VI-HPS training web site.

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
  • TAU performance system
  • Vampir interactive trace analysis
  • Periscope/PTF automated performance analysis and optimisation
  • Extra-P automated performance modeling
  • Paraver/Extrae/Dimemas trace analysis and performance prediction
  • [k]cachegrind cache utilisation analysis
  • MAQAO performance analysis & optimisation
  • MUST runtime error detection for MPI
  • ARCHER runtime error detection for OpenMP
  • JUBE script-based workflow execution environment
  • ... 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. 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.

A social event for participant and instructor networking is planned for the evening on Tuesday 24 April, consisting of a guided tour of the Weihenstephan Brewery sponsored by Megware followed by a self-paid dinner at the brewery restaurant.

Classroom capacity is limited, therefore priority may be given to applicants with parallel codes already running on the workshop computer system (CoolMUC-3), and those bringing codes from similar Xeon Phi x86 cluster systems to work on. Participants are therefore encouraged to prepare their own MPI, OpenMP and hybrid MPI+OpenMP parallel application codes for analysis.

weihenstephan2

 

Picture: Participants of the 21st VI-HPS Tuning Workshop at LRZ in April 2016.

Programme in Detail (provisional)

Day 1: Monday 23 April
08:30 (registration & set-up of course accounts on workshop computers)
09:00 Welcome
  • Introduction to VI-HPS & overview of tools
  • Introduction to parallel performance engineering
  • CoolMUC-3 computer system and software environment [Volker Weinberg, LRZ]
  • Building and running NPB/BT-MZ on CoolMUC-3 [Ilya Zhukov, JSC]
10:30 (break)  
11:00 mpiP lightweight MPI profiling [Martin Schulz, TUM]
  • mpiP hands-on exercises
  • MAQAO performance analysis tools [Cédric Valensi, Emmanuel Oseret & Salah Ibn Amar, UVSQ]
  • MAQAO hands-on exercises
12:30 (lunch)
13:30 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 2: Tuesday 24 April
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  [R. Tschüter, TUD]
  • Measuring hardware counters and other metrics 
  • Extra-P automated performance modeling [Sergei Shudler, TUDarmstadt]

  • Extra-P hands-on exercises
12:30 (lunch)
13:30 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 tour of Weihenstephan Brewery and dinner
 
Day 3: Wednesday 25 April
09:00 Scalasca automated trace analysis [Ilya Zhukov, JSC]
  • Scalasca hands-on exercises
  • Vampir interactive trace analysis [Matthias Weber, TUDresden]

  • Vampir hands-on exercises
10:30 (break)  
11:00 Paraver tracing tools suite [Judit Giménez & Lau Mercadal, BSC]
  • Paraver hands-on exercises
12:30 (lunch)
13:30 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 April
09:00 JUBE workflow execution environment [Thomas Breuer, JSC]
  • JUBE hands-on exercises
  • Periscope Tuning Framework [Robert Mijakovic, TUM]
  • Periscope hands-on exercises
10:30 (break)  
11:00 TAU performance system [Sameer Shende, UOregon]
  • TAU hands-on exercises
12:30 (lunch)
13:30 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 April
09:00 MUST MPI runtime error detection [Joachim Protze, RWTH]
  • MUST hands-on exercises
  • ARCHER OpenMP runtime error detection [Joachim Protze, RWTH]
  • ARCHER hands-on exercises
10:30 (break)
11:00 Kcachegrind cache analysis [Josef Weidendorfer, LRZ]
  • Kcachegrind hands-on exercises
  • Review
12:30 (lunch)
13:30 Hands-on coaching to apply tools to analyze participants' own code(s).
17:00 (adjourn)
 

Hardware and Software Platforms

CoolMUC-3: KNL-based x86 Linux cluster system:

  • 148 compute nodes each with single Intel Xeon Phi 7210-F 'Knights Landing' MIC processors (1.3GHz, 64 cores per processor, 4 hardware threads per core) and 96GB RAM and 16GB HBM
  • cluster modes: quad, snc4, a2a
  • memory modes: flat, cache, hybrid
  • network: Intel OmniPath interconnect
  • parallel filesystem: GPFS (SCRATCH & WORK)
  • software: SLES12-based GNU/Linux, Intel MPI; Intel, GCC and other compilers; SLURM batchsystem

The local HPC system CoolMUC-3 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

Via https://events.prace-ri.eu/event/648/registration/register

Location, Transport and Accommodation

The workshop will be held in Leibniz Rechenzentrum on the university campus outside Garching bei München, approximately 25 min north from the city centre of Munich. The U-bahn line U6 (station: Garching-Forschungszentrum) provides direct connection from the campus area to both Munich and Garching.
Getting to/from LRZ

It is recommended to choose a hotel in Garching or Munich city centre and use the U-bahn to reach LRZ.
Accommodation in Garching
Accommodation in Munich

Starts 23 Apr 2018 09:00
Ends 27 Apr 2018 17:00
CET
LRZ
Kursraum 2 (H.U.010)
Boltzmannstr. 1 85748 Garching b. München Germany

Prerequisites:

Basic MPI and OpenMP knowledge as presented in the LRZ course "Parallel programming of High Performance Systems".
Language: English
Exercises: The exercises will be done on the KNL segment of the Linux Cluster at LRZ.
Further information: Travel info, hotel info, course page at LRZ
Registration: Via https://events.prace-ri.eu/event/648/registration/register

Organisation Commitee:

RNDr. Ondřej Jakl, CSc. (IT4Innovations), Dr. Volker Weinberg (LRZ), Brian Wylie (JSC)