Mr
Vladimir Bahyl
(CERN IT-FIO)
13/02/2006, 14:00
Computing Facilities and Networking
oral presentation
Availability approaching 100% and response time converging to 0 are two factors that
users expect of any system they interact with. Even if the real importance of these
factors is a function of the size and nature of the project, todays users are rarely
tolerant of performance issues with system of any size.
Commercial solutions for load balancing and failover are plentiful. Citrix...
Dr
Doris Ressmann
(Forschungszentrum Karlsruhe)
13/02/2006, 14:20
Computing Facilities and Networking
oral presentation
At GridKa an initial capacity of 1.5 PB online and 2 PB background storage is needed
for the LHC start in 2007. Afterwards the capacity is expected to grow almost
exponentially. No computing site will be able to keep this amount of data in online
storage, hence a highly accessible tape connection is needed. This paper describes a
high-performance connection of the online storage to an IBM...
Michal Kwiatek
(CERN)
13/02/2006, 14:40
Computing Facilities and Networking
oral presentation
Over the last years, we have experienced a growing demand for hosting java web
applications. At the same time, it has been difficult to find an off-the-shelf
solution that would enable load balancing, easy administration and a high level of
isolation between applications hosted within a J2EE server.
The architecture developed and used in production at CERN is based on a linux...
Dr
Patrick Fuhrmann
(DESY)
13/02/2006, 15:00
Computing Facilities and Networking
oral presentation
For the last two years, the dCache/SRM Storage Element has been successfully
integrated into the LCG framework and is in heavy production at several dozens of
sites, spanning a range from single host installations up to those with some hundreds
of tera bytes of disk space, delivering more than 50 TByes per day to clients. Based
on the permanent feedback from our users and the detailed...
Mr
Tigran Mkrtchyan Mkrtchyan
(Deutsches Elektronen-Synchrotron DESY)
13/02/2006, 16:00
Computing Facilities and Networking
oral presentation
After successfully deploying dCache over the last few years, the dCache team
reevaluated the potential of using dCache for extremely huge and heavily used
installations. We identified the filesystem namespace module as one of the components
which would very likely need a redesign to cope with expected requirements in the
medium term future.
Having presented the initial design of Chimera...
Dr
Roger Cottrell
(Stanford Linear Accelerator Center)
13/02/2006, 16:20
Computing Facilities and Networking
oral presentation
The future of computing for HENP applications depends increasingly on how well the
global community is connected. With South Asia and Africa accounting for about 36% of
the worldโs population, the issues of internet/network facilities are a major concern
for these regions if they are to successfully partake in scientific endeavors.
However, not only is the International bandwidth for these...
Richard Cavanaugh
(University of Florida)
13/02/2006, 16:40
Computing Facilities and Networking
oral presentation
UltraLight is a collaboration of experimental physicists and network engineers whose
purpose is to provide the network advances required to enable petabyte-scale analysis
of globally distributed data. Current Grid-based infrastructures provide massive
computing and storage resources, but are currently limited by their treatment of the
network as an external, passive, and largely unmanaged...
Dr
Roger JONES
(LANCASTER UNIVERSITY)
13/02/2006, 17:00
Computing Facilities and Networking
oral presentation
Following on from the LHC experimentsโ computing Technical Design Reports, HEPiX,
with the agreement of the LCG, formed a Storage Task Force. This group was to:
examine the current LHC experiment computing models; attempt to determine the data
volumes, access patterns and required data security for the various classes of data,
as a function of Tier and of time; consider the current...
Mr
Francois Fluckiger
(CERN)
13/02/2006, 17:20
Computing Facilities and Networking
oral presentation
The openlab, created three years ago at CERN, was a novel concept: to involve leading
IT companies in the evaluation and the integration of cutting-edge technologies or
services, focusing on potential solutions for the LCG. The novelty lay in the
duration of the commitment (three years during which companies provided a mix of
in-kind and in-cash contributions), the level of the...
Mr
Dinesh Sarode
(Computer Division, BARC, Mumbai-85, India)
14/02/2006, 14:00
Computing Facilities and Networking
oral presentation
Today we can have huge datasets resulting from computer simulations (CFD, physics,
chemistry etc) and sensor measurements (medical, seismic and satellite). There is
exponential growth in computational requirements in scientific research. Modern
parallel computers and Grid are providing the required computational power for the
simulation runs. The rich visualization is essential in...
Dr
Wenji Wu
(Fermi National Accelerator Laboratory)
14/02/2006, 14:20
Computing Facilities and Networking
oral presentation
The computing models for HEP experiments are becoming ever more globally distributed
and grid-based, both for technical reasons (e.g., to place computational and data
resources near each other and the demand) and for strategic reasons (e.g., to
leverage technology investments). To support such computing models, the network and
end systems (computing and storage) face unprecedented...
Igor Mandrichenko
(FNAL)
14/02/2006, 14:40
Computing Facilities and Networking
oral presentation
Fermilab is a high energy physics research lab that maintains a dynamic network which
typically supports around 10,000 active nodes. Due to the open nature of the
scientific research conducted at FNAL, the portion of the network used to support
open scientific research requires high bandwidth connectivity to numerous
collaborating institutions around the world, and must facilitate...
Dr
Dantong Yu
(BROOKHAVEN NATIONAL LABORATORY), Dr
Dimitrios Katramatos
(BROOKHAVEN NATIONAL LABORATORY)
14/02/2006, 15:00
Computing Facilities and Networking
oral presentation
A DOE MICS/SciDac funded project, TeraPaths, deployed and prototyped the use of
differentiated networking services based on a range of new transfer protocols to
support the global movement of data in the high energy physics distributed computing
environment. While this MPLS/LAN QoS work specifically targets networking issues at
BNL, the experience acquired and expertise developed is...
Dr
Dirk Pleiter
(DESY)
14/02/2006, 16:00
Computing Facilities and Networking
oral presentation
apeNEXT is the latest generation of massively parallel machines optimized for
simulating QCD formulated on a lattice (LQCD). In autumn 2005 the commissioning of
several large-scale installations of apeNEXT started, which will provide a total of
15 TFlops of compute power. This fully custom designed computer has been developed
by an European collaboration composed of groups from INFN...
Dr
Chih-Hao Huang
(Fermi National Accelerator Laboratory)
14/02/2006, 16:20
Computing Facilities and Networking
oral presentation
ENSTORE is a very successful petabyte-scale mass storage system developed at
Fermilab. Since its inception in the late 1990s, ENSTORE has been serving the
Fermilab community, as well as its collaborators, and now holds more than 3 petabytes
of data on tape. New data is arriving at an ever increasing rate. One practical issue
that we are confronted with is: storage technologies have been...
Dr
Gidon Moont
(GridPP/Imperial)
14/02/2006, 16:40
Computing Facilities and Networking
oral presentation
A working prototype portal for the LHC Computing Grid (LCG) is being customised for
use by the T2K 280m Near Detector software group. This portal is capable of
submitting jobs to the LCG and retrieving the output on behalf of the user. The T2K
specific developement of the portal will create customised submission systems for the
suites of production and analysis software being written by...
Shawn Mc Kee
(High Energy Physics)
14/02/2006, 17:00
Computing Facilities and Networking
oral presentation
We will describe the networking details of NSF-funded UltraLight project and report
on its status. The projectโs goal is to meet the data-intensive computing challenges
of the next generation of particle physics experiments with a comprehensive,
network-focused agenda. The UltraLight network is a hybrid packet- and
circuit-switched network infrastructure employing both โultrascaleโ...
Dr
Les Cottrell
(Stanford Linear Accelerator Center (SLAC))
14/02/2006, 17:20
Computing Facilities and Networking
oral presentation
High Energy and Nuclear Physics (HENP) experiments generate unprecedented volumes
of data which need to be transferred, analyzed and stored. This in turn requires
the ability to sustain, over long periods, the transfer of large amounts of data
between collaborating sites, with relatively high throughput. Groups such as the
Particle Physics Data Grid (PPDG) and Globus are developing and...
Mr
Rohitashva Sharma
(BARC)
15/02/2006, 14:00
Computing Facilities and Networking
oral presentation
It is important to know the Quality of Service offered by nodes in a cluster both for
users and load balancing programs like LSF, PBS and CONDOR for submitting a job on to
a given node. This will help in achieving optimal utilization of nodes in a cluster.
Simple metrics like load average, memory utilization etc do not adequately describe
load on the nodes or Quality of Service (QoS)...
Mr
Andrey Bobyshev
(FERMILAB)
15/02/2006, 14:20
Computing Facilities and Networking
oral presentation
High Energy Physics collaborations consist of hundreds to thousands of physicists
and are world-wide in scope. Experiments and applications now running, or starting
soon, need the data movement capabilities now available only on advanced and/or
experimental networks. The Lambda Station project steers selectable traffic through
site infrastructure and onto these "high-impact" wide-area ...
Prof.
Manuel Delfino Reznicek
(Port d'Informaciรณ Cientรญfica)
15/02/2006, 14:40
Computing Facilities and Networking
oral presentation
Efficient hierarchical storage management of small size files continues to be a
challenge. Storing such files directly on tape-based tertiary storage leads to
extremely low operational efficiencies. Commercial tape virtualization products are
few, expensive and only proven in mainframe environments. Asking the users to deal
with the problem by โbundlingโ their files leads to a plethora of...
Dr
Ian Fisk
(FERMILAB)
15/02/2006, 15:00
Computing Facilities and Networking
oral presentation
CMS is preparing seven remote Tier-1 computing facilities to archive and serve
experiment data. These centers represent the bulk of CMS's data serving capacity, a
significant resource for reprocessing data, all of the simulation archiving capacity,
and operational support for Tier-2 centers and analysis facilities. In this paper we
present the progress on deploying the largest remote...
Dr
Hans Wenzel
(FERMILAB)
15/02/2006, 16:00
Computing Facilities and Networking
oral presentation
We report on the ongoing evaluation of new 64 Bit processors as they become available
to us. We present the results of benchmarking these systems in various operating
modes and also measured the power consumption. To measure the performance we use HEP
and CMS specific applications including: the analysis tool ROOT (C++), the MonteCarlo
generator Pythia (FORTRAN), OSCAR (C++) the GEANT 4...
Mr
Carsten Germer
(DESY IT)
15/02/2006, 16:20
Computing Facilities and Networking
oral presentation
Taking the implementation of ZOPE/ZMS at DESY as an example we will show and discuss
various approaches and procedures to introduce a Content Management System in a HEP
Institute.
We will show how requirements were gathered to make decisions regarding software and
hardware.
How existing Systems and management procedures needed to be taken into consideration.
How the project was...
Dr
Stefan Stancu
(University of California, Irvine)
15/02/2006, 16:40
Computing Facilities and Networking
oral presentation
The ATLAS experiment will rely on Ethernet networks for several purposes. A control
network will provide infrastructure services and will also handle the traffic
associated with control and monitoring of trigger and data acquisition (TDAQ)
applications. Two independent data networks (dedicated TDAQ networks) will be used
exclusively for transferring the event data within the High Level...
Abhishek Singh RANA
(University of California, San Diego, CA, USA)
15/02/2006, 17:00
Computing Facilities and Networking
oral presentation
We introduce gPLAZMA (grid-aware PLuggable AuthoriZation MAnagement) Architecture.
Our work is motivated by a need for fine-grain security (Role Based Access Control or
RBAC) in Storage Systems, and utilizes VOMS extended X.509 certificate specification
for defining extra attributes (FQANs), based on RFC 3281. Our implementation, the
gPLAZMA module for dCache, introduces Storage...
Iosif Legrand
(CALTECH)
16/02/2006, 14:00
Computing Facilities and Networking
oral presentation
To satisfy the demands of data intensive grid applications it is necessary to move to
far more synergetic relationships between applications and networks. The main
objective of the VINCI project is to enable data intensive applications to
efficiently use and coordinate shared, hybrid network resources, to improve the
performance and throughput of global-scale grid systems, such as those...
Dr
Mathias de Riese
(DESY)
16/02/2006, 14:20
Computing Facilities and Networking
oral presentation
DESY is one of the worlds leading centers for research with particle accelerators and
synchrotron light. The computer center manages a data volume of the order of 1 PB and
houses around 1000 CPUs. During DESY's engagement as Tier-2 center for LHC
experiments these numbers will at least double. In view of these increasing
activities an improved fabric management infrastructure is being...
Mr
Dirk Jahnke-Zumbusch
(DESY)
16/02/2006, 14:40
Computing Facilities and Networking
oral presentation
DESY operates some thousand computers, based on different operating systems. On
Servers and workstations not only the operating systems but many centrally supported
software systems are used. Most of these systems, operating and software systems come
with their own user and account management tools. Typically they do not know of each
other, which makes live harder for users, when you have...
