from web to grid: the future of scientific computing? neasan oneill gridpp dissemination officer
TRANSCRIPT
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From web to grid: The future of scientific computing?
Neasan ONeillGridPP Dissemination Officer
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Your university or experiment logo here
CERN
In The Beginning …
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The LHC
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The Experiment
4 ExperimentsALICE
CMS
LHCb ATLAS
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•What actually happened at the big bang?
Answering other questions
•How does gravity work?•How do particles have mass?•Where is the rest of the universe?
Answering the big question
A Discovery Machine
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Combined they will create 15PB of Data
every yearThat’s the
equivalent of 22 Trillion Sheets of
A4
More than any single, current,
system can handle
A Data Challenge
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The Problem
Solution needs to be:• Able to handle massive amounts of data• Able to process large computing jobs• Relatively inexpensive• Simple to use• Accessible 24/7• Easily upgraded
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Super Computers?
So we just build them bigger?
But:• Expensive• Inaccessible• Easily outdated
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The Internet?
The physical network which
connects the worlds computers allowing them to
communicate
A Solution
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Tools built upon the Internet
•Worldwide Web•File Sharing networks •BOINC e.g. SETI@home
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The World Wide Web
The Web specifically designed by
scientists at CERN to help with their
work
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The Next Stage
Build a new tool– The computers in the institutions are already
connected– They already share files
How about sharing everything?
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The Electricity Grid
• Always on• As much or as
little as you need on tap
• Where/how power is generated is irrelevant to the end user
• Just plug in and go
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A Computing Grid
• Always on• As much or as little as you
need on tap• Where/how computing
power is generated is irrelevant to the end user
• Just plug in and go
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Before
Distributed computing has been available to scientists for some time but: •The use of different sites has to be negotiated by each scientist individually. •They need a separate account on each system.•Jobs have to be submitted and results collected back by hand. Distributed computing can mean the user
has a lot of work to do to get any work done
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Middleware lets users simply submit jobs to the
Grid without having to know where the data is or
where the jobs will run. The software can run the job where the data is, or move the data to where
there is CPU power available.
Using the Grid and middleware, all the user has to do is submit a job and pick up
the results.
After
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Technical details
Operating System – Scientific Linux CERN edition (SLC5)
Middlewares:• gLite – Developed during the Enabling Grids for EsciencE projects, used across most of Europe, Australasia and Southern and Central America.
• ARC - Advanced Resource Connector, run by the Nordic countries (and glasgow).
• UNICORE - UNiform Interface to COmputing Resources, grid middleware for supercomputers
• Globus Toolkit – Used by the Open Science Grid in America
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wLCG
Worldwide LHC Computing Grid
130 computing centres
34 countries
100,000 CPUs
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More than the LHC
SuperB is a Super Flavour Factory, this means that they will be looking for new physics relating to the changes in the properties of elementary particles
like quarks. It will be built outside Rome.
T2K, in Japan, studies neutrino oscillations by generating a beam of neutrinos and
directing it towards the Super-Kamiokande detector 300Km away.
MICE is the foundations for a neutrino factory. The theory behind creating a steady beam of muons (which decay neutrinos) is quite well understood but controlling various parameters of the muons isn't.
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EGI
European Grid Initiative10000 users 243,020 CPUs317 sites 61PB tape175 VOs 40PB disk52 countries 15m jobs/month
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EGI
Collaboration
NGI
NGI
NGI
NGI
ResearchCommunity
ResearchCommunit
y
ResearchCommunit
y
ResearchCommunit
y
EGI.eu
ResearchCommunit
y
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Multidisciplinary• WISDOM Challenges:
– Avian Flu• 100 years work done in 4 weeks
– Malaria • 50% of computing power provided by GridPP
• Digital Libraries – Using the Grid to preserve cultural heritage by digitising and storing the
information. The distributed storage makes access easier.
• ASTRA– Archaeological and musical project
• Modelling ancient instruments, such as the Epigonion, Salpinx and Kithara to make it easier for researchers and musicians to study long dead instruments and music
• Collaboration with CityDance– A Washington DC based dance troupe used a technique for converting seismic
activity to sound to create music for a piece they were working on• The technique called volcano sonification is usually used to predict earthquakes and
is very CPU intensive so the Grid is used to do the number crunching
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Based at 20 UK universities, and CERN, they are
building the UK arm of the
wLCG
GridPP is a collaboration of Particle Physicists and Computing Scientists
Grids in the UK
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University Of BirminghamUniversity Of
BristolUniversity Of Cambridge
University Of Oxford
Rutherford Appleton
LaboratoryWarwick University
University of Sussex
Lancaster University
University Of Liverpool
University Of Manchester
University Of Sheffield
Durham University
University Of Edinburgh
University Of Glasgow
Brunel University
Imperial College London
Queen Mary, University Of
LondonRoyal Holloway,
University Of London
University College London
Swansea University
GridPP
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Numbers
• 20 Institutes
• 100+ Individuals
• 10,000+TB of storage
• Equivalent of ~24,000 desktop computers
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Innovation in outreach
The e-ScienceTalk project communicates the success stories of e-Infrastructures to policy
makers, general public, scientists and students
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http://www.gridpp.ac.uk
Fin