30th VI-HPS Tuning Workshop (BSC, Barcelona, Spain)

Monday 21st – Friday 25th January 2019.

The workshop will take place at Barcelona Supercomputing Center (BSC), C6 building E-106, BSC Campus Nord, Barcelona, Spain.

This workshop organized by VI-HPS for the Spanish PRACE Advanced Training Centre hosted by Barcelona Supercomputing Center 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
    • Paraver trace analysis tool
    • Dimemas performance prediction tool
    • Score-P instrumentation and measurement infrastructure
    • TAU performance system
    • Scalasca automated trace analysis toolset
    • Vampir interactive trace analysis toolset
    • Extra-P automated performance modeling
    • MUST runtime error detection tool for MPI
    • MAQAO binary analysis & optimization tool
    • … and probably others

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. 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 parallel codes already running on the workshop computer systems (MareNostrum-IV and CTE-POWER), and those bringing codes from similar systems to work on. Participants are therefore encouraged to prepare their own MPI, OpenMP and hybrid MPI+OpenMP parallel application codes for analysis.

Programme (provisional)

Day 1: Monday 21 January  
09:00 Welcome

  • Introduction to VI-HPS & overview of tools [Judit Giménez, BSC]
  • Introduction to parallel performance engineering

Lab setup

  • Computer systems and software environment [BSC]
  • Building and running codes on MareNostrum-IV and CTE-POWER9
 
10:45 (break)  
11:15 Paraver tracing tools suite [Judit Giménez, BSC]

  • Paraver hands-on exercises
 
13:00 (lunch)  
14:00 Hands-on coaching to apply tools to analyze participants’ own code(s).  
17:00 Review of day and schedule for remainder of workshop  
17:30 (adjourn)  
     
Day 2: Tuesday 22 January  
09:00 Score-P instrumentation & measurement [Michael Knobloch, JSC]

  • Score-P hands-on exercises
  • CUBE profile explorer hands-on exercises [Michael Knobloch, JSC]

Score-P analysis scoring & filtering  [Michael Knobloch, JSC]

  • Measuring hardware counters and other metrics
 
10:45 (break)  
11:15 TAU performance system [Sameer Shende, UOregon]

  • TAU hands-on exercises
 
13:00 (lunch)  
14:00 Hands-on coaching to apply tools to analyze participants’ own code(s).  
17:00 Review of day and schedule for remainder of workshop  
17:30 (adjourn)  
     
Day 3: Wednesday 23 January  
09:00 Scalasca automated trace analysis [Michael Knobloch, JSC]

  • Scalasca hands-on exercises
 
10:45 (break)  
11:15 Vampir interactive trace analysis [Holger Brunst, TUDresden]

  • Vampir hands-on exercises
 
13:00 (lunch)  
14:00 Hands-on coaching to apply tools to analyze participants’ own code(s).  
17:00 Review of day and schedule for remainder of workshop  
17:30 (adjourn)  
     
Day 4: Thursday 24 January  
09:00 Extra-P automated scaling analysis [Alexandru Calotoiu, TUDarmstadt]

  • Extra-P hands-on exercises
 
10:45 (break)  
11:15 MUST correctness checking of MPI usage [Simon Schwitanski, RWTH]

  • MUST hands-on exercises
 
13:00 (lunch)  
14:00 Hands-on coaching to apply tools to analyze participants’ own code(s).  
17:00 Review of day and schedule for remainder of workshop  
17:30 (adjourn)  
     
Day 5: Friday 25 January  
09:00 MAQAO x86 performance analysis tools [UVSQ]

  • MAQAO hands-on exercises
 
10:45 (break)  
11:15 Review  
13:00 (lunch)  
14:00 Hands-on coaching to apply tools to analyze participants’ own code(s).  
17:00 (adjourn)  

 
Hardware and Software Platforms

CTE-POWER: IBM AC922 racks with a total of 54 compute nodes with dual IBM Power9 8335-GTG 3.0 GHz 20-core processors with 4-way SMT and 512 GB memory and four NVIDIA V100 (Volta) GPUs with 16 GB HBM2 per node (similar to 2018/11 Top500#1 “Summit” and #2 “Sierra“), single-port Mellanox EDR Infiniband interconnection network, Red Hat Enterprise Linux Server 7.4, IBM XL, GCC and PGI compilers, IBM Spectrum MPI and OpenMPI, SLURM batch software, GPFS parallel filesystem.

MareNostrum-IV: Lenovo SD530 racks with a total of 3,456 compute nodes with dual Intel Xeon Platinum 8160 (Skylake) 2.1 GHz 24-core processors with 2-way SMT and 96 GB memory per node, Intel Omni-Path interconnection network, SuSE 12SP2 Linux, Intel & GCC compilers, Intel and other MPI libraries, SLURM batch software, GPFS parallel filesystem.

The local HPC systems are the primary platform for the workshop. Course accounts will be provided during the workshop to participants. 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).

Participants are expected to bring and use their own notebook computers with SSH and X11 software configured to connect to the HPC systems and run interactive graphical tools.

Registration

Registration is via the PRACE training portal: the number of participants is limited and selection may be made based on the information provided when registering.

Contact

Judit Gimenez
Barcelona Supercomputing Center
Phone: +34 93 401-7178
Email: judit.gimenez@bsc.es

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

Sponsors

  This workshop is a PRACE Training Centre (PTC) course, organized by Barcelona Supercomputing Center.