Conveners
Track 6 Session: #1 (Facilities, Monitoring)
- Jose Flix Molina (Centro de Investigaciones Energ. Medioambientales y Tecn. - (ES)
Track 6 Session: #2 (Facilities, Monitoring)
- Helge Meinhard (CERN)
Track 6 Session: #3 (Collaborative Tool)
- Peter Hristov (CERN)
Track 6 Session: #4 (Network)
- Phil Demar (Fermilab)
Description
Facilities, Infrastructure, Network
Christian Nieke
(Brunswick Technical University (DE))
13/04/2015, 14:00
Track6: Facilities, Infrastructure, Network
oral presentation
Optimising a computing infrastructure on the scale of LHC requires a quantitative understanding of a complex network of many different resources and services. For this purpose the CERN IT department and the LHC experiments are collecting a large multitude of logs and performance probes, which are already successfully used for short-term analysis (e.g. operational dashboards) within each...
Pedro Andrade
(CERN)
13/04/2015, 14:15
Track6: Facilities, Infrastructure, Network
oral presentation
Over the past two years, the operation of the CERN Data Centres went through significant changes with the introduction of new mechanisms for hardware procurement, new services for cloud infrastructure and configuration management, among other improvements. These changes resulted in an increase of resources being operated in a more dynamic environment. Today, the CERN Data Centres provide over...
Birgit Lewendel
(Deutsches Elektronen-Synchrotron (DE))
13/04/2015, 14:30
Track6: Facilities, Infrastructure, Network
oral presentation
DESY operates a multi-VO Grid site for 20 HEP and non-HEP
collaborations and is one of the world-wide largest Tier-2 sites for
ATLAS, CMS, LHCb, and BELLE2. In one common Grid infrastructure
computing resources are shared by all VOs according to MoUs and
agreements, applying an opportunistic usage model allows to distribute
free resources among the VOs. Currently, the Grid site...
Olof Barring
(CERN)
13/04/2015, 14:45
Track6: Facilities, Infrastructure, Network
oral presentation
The Open Compute Project, OCP ( http://www.opencompute.org/ (link is external)), was launched by Facebook in 2011 with the objective of building efficient computing infrastructures at lowest possible cost. The technologies are released as open hardware, with the goal to develop servers and data centers following the model traditionally associated with open source software projects. In 2013...
Dr
Peter Elmer
(Princeton University (US))
13/04/2015, 15:00
Track6: Facilities, Infrastructure, Network
oral presentation
Deploying the Worldwide LHC Computing Grid (WLCG) was greatly
facilitated by the convergence, around the year 2000, on Linux and
commodity x86 processors as a standard scientific computing platform.
This homogeneity enabled a relatively simple "build once, run
anywhere" model for applications. A number of factors are now driving
interest in alternative platforms. Power limitations at the...
Shawn Mc Kee
(University of Michigan (US))
13/04/2015, 15:15
Track6: Facilities, Infrastructure, Network
oral presentation
The Worldwide LHC Computing Grid relies on the network as a critical part of its infrastructure and therefore needs to guarantee effective network usage and prompt detection and resolution of any network issues, including connection failures, congestion, traffic routing, etc. The WLCG Network and Transfer Metrics project aims to integrate and combine all network-related monitoring data...
Bruno Heinrich Hoeft
(KIT - Karlsruhe Institute of Technology (DE))
13/04/2015, 15:30
Track6: Facilities, Infrastructure, Network
oral presentation
The Steinbuch Center for Computing (SCC) at Karlsruhe Institute of Technology (KIT) was involved quite early in 100G network technology. In 2010 already a first 100G wide area network testbed over a distance of approx. 450 km was deployed between the national research organizations KIT and FZ-Jülich - initiated by DFN (the German NREN). Only three years later 2013, KIT joined the Caltech SC13...
Adam Jedrzej Otto
(Ministere des affaires etrangeres et europeennes (FR))
13/04/2015, 15:45
Track6: Facilities, Infrastructure, Network
oral presentation
The LHCb experiment is preparing a major upgrade of both the detector and the data acquisition system. A system capable of transporting up to 50 Tbps of data will be required. This can only be achieved in a manageable way using 100 Gbps links. Such links recently became available also in the servers, while they have been available between switches already for a while.
We present first...
Jeremy Coles
(University of Cambridge (GB))
14/04/2015, 14:00
Track6: Facilities, Infrastructure, Network
oral presentation
This first section of this paper elaborates upon the operational status and directions within the UK Computing for Particle Physics (GridPP) project as we approach LHC Run-2. It details the pressures that have been gradually reshaping the deployed hardware and middleware environments at GridPP sites – from the increasing adoption of larger multicore nodes to the move towards alternative batch...
Jose Flix Molina
(Centro de Investigaciones Energ. Medioambientales y Tecn. - (ES)
14/04/2015, 14:15
Track6: Facilities, Infrastructure, Network
oral presentation
The LHC experiments will collect unprecedented data volumes in the next Physics run, with high pile-up collisions resulting in events which require a more complex processing. The collaborations have been asked to update their Computing Models to optimize the use of the available resources in order to cope with the Run2 conditions, in the midst of widespread funding restrictions. The changes in...
Jeff Templon
(NIKHEF (NL))
14/04/2015, 14:30
Track6: Facilities, Infrastructure, Network
oral presentation
With the advent of workloads containing explicit requests for multiple
cores in a single grid job, grid sites faced a new set of challenges
in workload scheduling. The most common batch schedulers deployed at
HEP computing sites do a poor job at multicore scheduling when using
only the native capabilities of those schedulers. This talk describes
how efficient multicore scheduling was...
Manuel Giffels
(KIT - Karlsruhe Institute of Technology (DE))
14/04/2015, 14:45
Track6: Facilities, Infrastructure, Network
oral presentation
Recent developments in high energy physics (HEP) including multi-core jobs and multi-core pilots require data centres to gain a deep understanding of the system to correctly design and upgrade computing clusters. Especially networking is a critical component as the increased usage of data federations relies on WAN connectivity and availability as a fallback to access data. The specific...
Mr
Phil Demar
(Fermilab)
14/04/2015, 15:00
Track6: Facilities, Infrastructure, Network
oral presentation
Fermilab is in the process of upgrading its wide-area network facilities to 100GE technology. One might assume that migration to be relatively straightforward, with forklift upgrades of our existing network perimeter devices to 100GE-capable platforms, and accompanying deployment of 100GE WAN services. However, our migration to 100GE WAN technology has proven to be significantly more...
Luca Magnoni
(CERN)
14/04/2015, 15:15
Track6: Facilities, Infrastructure, Network
oral presentation
Monitoring the WLCG infrastructure requires to gather and to analyze high volume of heterogeneous data (e.g. data transfers, job monitoring, site tests) coming from different services and experiment-specific frameworks to provide a uniform and flexible interface for scientists and sites. The current architecture, where relational database systems are used to store, to process and to serve...
Renaud Vernet
(CC-IN2P3 - Centre de Calcul (FR))
14/04/2015, 15:30
Track6: Facilities, Infrastructure, Network
oral presentation
The computing needs in the HEP community are increasing steadily, but the current funding situation in many countries is tight. As a consequence experiments, data centres, and funding agencies have to rationalize resource usage and expenditures.
CC-IN2P3 (Lyon, France) provides computing resources to many experiments including LHC, and is a major partner for astroparticle projects like...
Stefano Agosta
(CERN)
14/04/2015, 15:45
Track6: Facilities, Infrastructure, Network
oral presentation
With the inexorable increase in the use of mobile devices, for both general communications and mission-critical applications, wireless connectivity is required anytime and anywhere. This requirement is addressed in office buildings through the use of Wi-Fi technology but Wi-Fi is ill adapted for use in large experiment halls and complex underground environments such as the LHC tunnel and...
Pedro Ferreira
(CERN)
16/04/2015, 09:00
Track6: Facilities, Infrastructure, Network
oral presentation
Indico has come a long way since it was first used to organize CHEP 2004.
More than ten years of development have brought new features and projects, widening the application's feature set and enabling event organizers to work even more efficiently. While this has boosted the tool's usage and facilitated its adoption by a remarkable 300,000 events (at CERN only), it has also generated a whole...
Mr
Joao Correia Fernandes
(CERN)
16/04/2015, 09:15
Track6: Facilities, Infrastructure, Network
oral presentation
We will present an overview of the current real-time video service offering for the LHC, in particular the operation of the CERN Vidyo service will be described in terms of consolidated performance and scale: The service is an increasingly critical part of the daily activity of the LHC collaborations, topping recently more than 50 million minutes of communication in one year, with peaks of up...
Esteban Gabancho
(CERN)
16/04/2015, 09:30
Track6: Facilities, Infrastructure, Network
oral presentation
With the expected release of invenio next stable version, CDS is preparing a 'lab' service where users will have the opportunity to experience the powerful features of the new software.
After a short introduction of Invenio next, the talk will explain the mechanisms that have been implemented to allow to run parallel services with the same content exposed from two different designs and the...
Bruno Silva De Sousa
(CERN)
16/04/2015, 09:45
Track6: Facilities, Infrastructure, Network
oral presentation
The emergence of social media platforms in the consumer space unlocked new ways of interaction between individuals on the web. People develop now their social networks and relations based on common interests and activities with the choice to opt-in or opt-out on content of their interest. This kind of platforms have also an important place to fill inside large organizations and enterprises...
Steven Goldfarb
(University of Michigan (US))
16/04/2015, 10:00
Track6: Facilities, Infrastructure, Network
oral presentation
The ATLAS Education and Outreach Group is in the process of migrating its public online content to a professionally designed set of web pages built on a Drupal-based content management system. Development of the front-end design passed through several key stages, including audience surveys, stakeholder interviews, usage analytics, and a series of fast design iterations, called sprints. ...
Mr
Joao Correia Fernandes
(CERN)
16/04/2015, 10:15
Track6: Facilities, Infrastructure, Network
oral presentation
The CERN IT department has built over the years a performant and integrated ecosystem of collaboration tools, from videoconference and webcast services to event management software. These services have been designed and evolved in very close collaboration with the various communities surrounding the laboratory and have been massively adopted by CERN users. To cope with this very heavy usage,...
Stefan Nicolae Stancu
(CERN)
16/04/2015, 11:00
Track6: Facilities, Infrastructure, Network
oral presentation
The LHC Optical Private Network, linking CERN and the Tier1s and the LHC Open Network Environment linking these to the Tier2 community successfully supported the data transfer needs of the LHC community during Run 1 and have evolved to better serve the networking requirements of the new computing models for Run 2. We present here the current status and the key changes, notably the delivered...
Vincenzo Capone
(DANTE)
16/04/2015, 11:15
Track6: Facilities, Infrastructure, Network
oral presentation
The GÉANT infrastructure is the backbone that serves the scientific communities in Europe for their data movement needs and their access to international research and education networks. Using the extensive fibre footprint and infrastructure in Europe the GÉANT network delivers a portfolio of services aimed to best fit the specific needs of the users, including Authentication and Authorization...
Dr
Tony Wildish
(Princeton University (US))
16/04/2015, 11:30
Track6: Facilities, Infrastructure, Network
oral presentation
The LHC experiments have traditionally regarded the network as an unreliable resource, one which was expected to be a major source of errors and inefficiency at the time their original computing models were derived. Now, however, the network is seen as much more capable and reliable. Data are routinely transferred with high efficiency and low latency to wherever computing or storage resources...
Dave Kelsey
(STFC - Rutherford Appleton Lab. (GB))
16/04/2015, 11:45
Track6: Facilities, Infrastructure, Network
oral presentation
The world is rapidly running out of IPv4 addresses; the number of IPv6 end systems connected to the internet is increasing; WLCG and the LHC experiments may soon have access to worker nodes and/or virtual machines (VMs) possessing only an IPv6 routable address. The HEPiX IPv6 Working Group (http://hepix-ipv6.web.cern.ch/) has been investigating, testing and planning for dual-stack services on...
Duncan Rand
(Imperial College Sci., Tech. & Med. (GB))
16/04/2015, 12:00
Track6: Facilities, Infrastructure, Network
oral presentation
Named Data Networks (NDN) are an emerging network technology based around requesting data from a network rather than a specific host. Intermediate routers in the network cache the data. Each data packet must be signed to allow its provenance to be verified. Data blocks are addressed by a unique name which consists of a hierarchical path, a name and attributes. An example of a valid address...
Christos Papadopoulos
(Colorado State University)
16/04/2015, 12:15
Track6: Facilities, Infrastructure, Network
oral presentation
Introduction
------------
The Computing Models of the LHC experiments continue to evolve from
the simple hierarchical MONARC model towards more agile models where
data is exchanged among many Tier2 and Tier3 sites, relying on both
strategic data placement, and an increased use of remote
access with caching through CMS's AAA and ATLAS' FAX projects, for example.
The challenges presented...
