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Agenda hpc-ch Forum “Infrastructure for HPC”, May 24th, 2012 at EMPA

May 15th, 2012

Setting the Scope

In this forum we would like to discuss the different aspects related to providing an infrastructure for the HPC systems we are operating. In many institutions the factors limiting HPC are not the available personnel or monetary resources but simply the available resources where new systems are to be installed.

Providing an adequate technical infrastructure for HPC encompasses different fields such as overall architecture, electricity, cooling, security etc. This is made more difficult since in most cases it is not possible to build a new data center but we have to adapt our needs to existing buildings.

Key Questions

We would like to exchange our experiences in this field and discuss some of the following points:

  • What is the actual situation at our centers? Expressed in available square meters, maximal power usage, cooling technologies, PUE (Power Usage Effectiveness), etc.
  • What are our forecasts (3 to 8 years) in the increase of technology of HPC?
  • How will the infrastructure requirements for HPC systems grow in the next future? On what do we base our extrapolation? What will be the limiting factors?
  • What are today’s best practices and problems in running an infrastructure for HPC?
  • What are the trends in this field? What will our infrastructure look like in a decade?
  • What problems are often experienced, such as unreliable power, cooling infrastructure problems or polluted air?
  • Essential, unthought of needs, such as cable management, inventory management, configuration management, etc.

Location / Hosting

The Topic Forum will take place at Empa Akademie; Empa, Ueberlandstrasse 129, 8600 Duebendorf

Please refer to this link to get information about how to reach Empa »

Chairmanship

Daniele Passerone, Empa, tel 058 765 4877
Carlo Pignedoli, EMPA, tel 058 765 4203
Michele De Lorenzi, CSCS / hpc-ch, tel 091 610 82 08

Agenda

10:00 – 10:30 Coffee and registration

10:30 – 10:40 Greeting and introduction

Daniele Passerone (Empa)
Michele De Lorenzi (CSCS / hpc-ch)

10:40 – 11:00 Internal keynote presentations

  • Pushing the borders of science: in?depth studies and their priceIn this talk, I will focus on two cases within the field of fluid mechanics, where HPC computing became a necessity. These examples draw from my own experience and serve to highlight some limitations of current HPC infrastructure, mainly related to data transfer and storage; Peter Moonen (EMPA)

11:00 – 11:45 Short presentations

  • New DC@EPFL : a bet on a “passive” water cooling solution; Aristide Boisseau (EPFL)
  • Infrastructure for Schrödinger: Lessons learned; Christian Bolliger (UZH)

11:45 – 12:00 Community Development, Michele De Lorenzi and Sigve Haug

12:00 – 13:00 Lunch

13:00 – 14:00 Guided tour at Empa (two tours of half an hour)

14:00 – 17:00 Short presentations (with a short break at 15:30)

  • The new CSCS building; Ladina Gilly (CSCS)
  • Energy-driven algorithms; Vincent Keller (CADMOS)
  • Experiences from a small-size HPC server room; Vittoria Rezzonico (EPFL)
  • Infrastructure for HPC @ PSI; Edgar Barabas and Derek Feichtinger (PSI)
  • HPC Infrastructure @ UNIBE; Gianfranco Sciacca (University of Bern)

17:00 Farewell and end of the meeting

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Escape response of small fish tested using a supercomputer

May 13th, 2012

Small fish bend themselves into a ‘C’ shape before they flee from predators.

Observations have suggested that this shape helps them to abruptly put the greatest distance possible between themselves and their predators.

Petros Koumoutsakos, a professor at the Computational Science & Engineering Laboratory » at ETH Zurich, and two of his doctoral students, Mattia Gazzola and Wim Van Rees, tested this hypothesis for the first time using a supercomputer combining a three-dimensional flow simulation with an  evolutionary optimization algorithm.

The analysis showed that the more water is accelerated by the fish, the more they accelerated themselves. The created vortical structures play a lesser role in the escape process than had been assumed thus far. The fish use their entire body to escape (by means of the C-start), so that they can displace much larger volumes of water, to accelerating themselves.

These results can be applied for example to wind turbines and energy generation devices inspired by fish.

This simulation has been computed at CSCS Swiss National Supercomputing Centre. Read more about the simulation on the CSCS web pages »

Bibliography: Gazzola M, Van Rees WM & Koumoutsakos P: C-start: optimal start for larval fish, Journal of Fluid Mechanics (2012) 698, 5-18, DOI: http://dx.doi.org/10.1017/jfm.2011.558

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Reminder: MPI-2.2, MPI 3.0 and PGAS workshop, May 23-25, Lugano

May 10th, 2012

This is a reminder for the

Advanced Distributed Memory Parallel Programming: MPI-2.2, MPI-3.0 and PGAS

workshop to be held at CSCS in Lugano on  23-25 May, 2012.

The goal of this training workshop is to introduce MPI-2.2 performance critical topics and to provide an overview of MPI 3.0, MPI for hybrid computing and Partitioned Global Address Space (PGAS) languages, Coarray Fortran and Unified Paralell C (UPC). For lab sessions, Cray XK6, a massively parallel processing (MPP) platform with GPUs and a QDR InfiniBand cluster with Intel processors and GPUs will be targeted.

Attendees are encouraged to bring in their own applications and codes for the hands-on sessions. Representatives from MPI 3.0 forum and Cray PE will be present at the meeting for discussions and feedback.  There will be invited talks where presenters share their experiences and discuss issues in using MPI and PGAS on the CSCS systems.

Registration deadline: May 18, 2012.

Event and registration details are available here »

Read the rest of this entry »

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CSCS Call for Proposals 2012 – Allocation period starting on 1 October 2012

May 8th, 2012

This is a reminder for the next call of proposals at CSCS.

If you wish to be considered for the allocation period starting on 1 October 2012, then you need to submit your production project proposal no later than

Friday, 11 May 2012 at 18:00  (deadline).

Please make sure that you have an active username and password so that you can download a submission form.

All details for the proposals submissions are available here »

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Call for proposals for 5th PRACE Project Access and Multi-year Access (Tier-0) and synchronized DECI-9 Call (Tier-1)

May 7th, 2012

We would like to make you aware of the following opportunity within the PRACE consortium.

PRACE Call for Proposals Open until 30th May

If you wish to apply for a resource allocation under this scheme then please make sure that you can fulfill the necessary conditions including the scalability and readiness criteria.

  • Opening date: April 17th, 2012
  • Closing date: May 30st, 2012, at 12.00 CEST
  • Allocation start date: 1st November, 2012
  • Allocation period: 1 year for Project Access and DECI, 1+1 year for Multi-year Access
  • Type of access: Project Access and Multi-year access (Tier-0) and DECI (Tier-1)

PRACE – the Partnership for Advanced Computing in Europe – makes it possible for researchers from across Europe and the world to apply for access to Tier-0 HPC systems via a peer-review process.

This Call also invites proposals for project access to Tier-1 resources, via DECI, the Distributed European Computing Initiative, providing single project cross-national access to national (Tier-1) HPC-resources

Project proposal submissions are sought from academics who hold a position of senior researcher or higher and who are based either in Switzerland or in another PRACE Association member country or an EU country

Details of the call are available on »

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