22nd VI-HPS Tuning Workshop (Uni. Cambridge, England) - PATC Performance Analysis Workshop
Date
Wednesday 6th - Friday 8th July, 2016.
Location
The workshop will take place at the University of Cambridge, Titan Teaching Room 1, Cockcroft Building Floor 2, New Museums Site, Cambridge, CB2 3QH, England.
Organizing Institutions
Goals
This workshop is organized by VI-HPS for the UK PRACE Advanced Training Centre in collaboration with the DiRAC Facility and HPC Service of the University of Cambridge 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
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 on the following topics:
- TAU performance system
- Score-P instrumentation and measurement
- Scalasca automated trace analysis
- MUST runtime error detection for MPI
- ARCHER runtime error detection for OpenMP
- MAP+PR profiling and performance reports
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 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. Workstations are provided to connect to the workshop computer systems, however, (eduroam) wifi will be available so participants could also use personal notebook computers with SSH and X11 configured.
Outline
The workshop introduces the open-source community-developed Score-P instrumentation and measurement infrastructure, and the Scalasca and TAU tools using it, to provide a practical basis for portable performance analysis of parallel applications. It will be delivered as a series of presentations with associated hands-on practical exercises using the DiRAC Darwin cluster and/or ARCHER Cray XC30. Starting with basic application instrumentation and measurement to generate execution profiles, then improving measurement quality via customization capabilities, progresses to interactive and automated analyses of execution traces.
While analysis of provided example codes will be used to guide the class through the relevant steps and familiarise with usage of the tools, coaching will also be available to assist participants to analyse their own parallel application codes and may suggest opportunities for improving their execution performance and scalability.
Programme
| Day 1: | Wednesday 6th July |
| 09:00 | Welcome messages [Filippo Spiga & Michael Bareford] |
| 09:15 | |
| 10:30 | (break) |
| 11:00 |
TAU performance system [Sameer Shende, UOregon]
|
| 12:30 |
(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: | Thursday 7th July | 09:00 | Instrumentation & measurement with Score-P [Wylie, JSC]
Execution profile analysis report exploration with CUBE [Hermanns, JSC] |
| 10:30 | (break) |
| 11:00 | Configuring & customising Score-P measurements [Wylie, JSC]
Automated trace analysis with Scalasca [Hermanns, JSC] |
| 12:30 |
(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: | Friday 8th July | 09:00 |
MUST MPI runtime error detection [Joachim Protze, RWTH] |
| 10:30 | (break) |
| 11:00 |
Allinea tools suite [Florent Lebeau, Allinea] |
| 12:30 |
(lunch) |
| 14:00 | Review of workshop |
| 14:30 | Hands-on coaching to apply tools to analyze participants' own code(s). |
| 16:00 | (adjourn) |
Hardware and Software Platforms
Darwin: Dell C6220 cluster with 600 compute nodes consisting of two 8-core Intel E5-2670 (SandyBridge) processors sharing 64GB of NUMA memory, Mellanox FDR interconnect, Intel MPI & compilers. Training accounts will be provided!
ARCHER: Cray XC30 with 3008 compute nodes consisting of two 12-core Intel E5-2697 (IvyBridge) 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
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.
Contact
Local Arrangements
|
Filippo Spiga HPC Services, University of Cambridge E-mail: fs395[at]cam.ac.uk |
Michael Bareford EPCC, University of Edinburgh Email: michael.bareford[at]epcc.ed.ac.uk |
Tuning Workshop Series
Brian WylieJülich Supercomputing Centre
Email: b.wylie[at]fz-juelich.de
