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Collaboration Board
(CB)
- The Collaboration Board (CB) provides the main technical direction
for LCG. The CB is composed of a representative of each Institution
or federation of Institutions that is a member of the Collaboration,
the LCG Project Leader and the Spokespersons of each LHC Experiment,
with voting rights; and the CERN Chief Scientific Officer (CSO),
and CERN/IT and CERN/PH Department Heads, as ex-officio members
without voting rights, as well as a Scientific Secretary. The
CB elects the Chairperson of the CB from among its Members. The
CB meets annually and at other times as required.
 
Overview
Board
(OB)
- A standing committee of the CB, the Overview Board (OB),
has the role of overseeing the functioning of the Collaboration.
It also acts as a clearing-house for conflicts that may arise
within the Collaboration. The OB is chaired by the CERN CSO.
Its other members include one person appointed by the agency/agencies
that funds/fund each of the Tier-1 centres, the Spokespersons
of the LHC Experiments, the LCG Project Leader, the CERN/IT
and CERN/PH Department Heads, and a Scientific Secretary. It
meets about four times per year.
Both the CB and the OB may co-opt additional non-voting members
as they deem necessary. The non-voting members complement
the regular members by advising on, for example, matters
concerning
the environment in which the Collaboration operates or specialist
aspects within their areas of expertise.
Management
Board (MB)
-
The work of the Collaboration
is organized and managed as the LHC Computing Grid Project. The Management
Board (MB) supervises the work of the Project. It is chaired by the
LCG Project Leader and reports to the OB. The MB organizes the work
of the Project as a set of formal activities. It maintains the overall
programme of work and all other planning data necessary to ensure
the smooth execution of the work of the Project. It provides quarterly
progress and status reports to the OB. The MB endeavours to work
by consensus but, if this is not achieved, the LCG Project Leader
shall make decisions taking into account the advice of the Board.
The MB membership includes the LCG Project Leader, the Technical
Heads of the Tier-0 and Tier-1 centres, the leaders of the major
activities managed by the Board, the Computing Co-ordinator of each
LHC Experiment, the Chair of the Grid Deployment Board (GDB), a Scientific
Secretary and other members as decided from time to time by the Board.
Grid
Deployment Board (GDB)
- The Grid Deployment Board (GDB) is the forum within the Project
where the computing managements of the experiments and the regional
computing centres discuss and take, or prepare, the decisions
necessary for planning, deploying, and operating the LHC Computing
Grid. Its membership includes: as voting members - one person
from each country with a regional computing centre providing
resources to an LHC experiment (usually a senior manager from
the largest such centre in the country), a representative of
each of the experiments; as non-voting members - the Computing
Co-ordinators of the experiments, the LCG Project Leader, and
leaders of formal activities and projects of the Collaboration.
The Chair of the GDB is elected by the voting members of the
board for a two-year term. The GDB may co-opt additional non-voting
members as it deems necessary. The GDB reports to the LCG Management
Board.
Architects
Forum (AF)
- An Architects Forum (AF) consisting of the Applications Area
Manager (chair), the software architects of the four LHC experiments,
the leaders of the various AA software projects and other invited
members provides for the formal participation of the experiments
in the planning, decision-making and architectural and technical
direction of applications area activities. Architects represent
the interests of their experiment and contribute their expertise.
The AF meets every two weeks and makes decisions about the difficult
issues that cannot be resolved in open forums such as the Applications
Area meeting. The Applications Area Meeting takes pace fortnightly
and provides a forum for information exchange between the project
and the LHC experiments.
The activities of the project are
organised as a number of sub-projects or Areas
Applications
Area
| Applications Area Meetings |
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Discussion and consultation |
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Open membership |
Fabric
Area
- Responsible for organizing the LHC computing services at CERN
- Responsible for the architecture of the T0 and CAF installations
- Responsible for Data Challenges to verify the scalability and
performance of the architecture
- Sharing technical information with systems administration experts
at other regional centers
- Regular re-evaluation of evolving technologies in areas such
as fabric management, storage and computation
- Regular re-assessment of the cost of the LHC computing facility
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Organise and operate the pilot global grid service
for LHC
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Coordinate with regional centre managers and
with the production managers from the experiments
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Build and certify a distribution package for
installation at regional centres
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Operate the grid infrastructure (information
services, registration services, call centre, operations
centre, user consultancy and
support)
The Grid Deployment Area has several standing committees to coordinate
different aspects of its work.
| Security
Group |
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Proposals for security strategy, policy and planning |
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Membership: security experts, chair David Kelsey/RAL |
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| LCG
Operations Team |
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Day-to-day operational decisions |
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Membership: one person from each site |
The manager of the grid deployment
area also serves as the Operations Manager of the EGEE project, ensuring
a very close integration of the services deployed by these projects.
Distributed
Analysis & Grid Support (formerly ARDA)
This area is responsible for
working with teams within the experiments, helping them to interface to grid services
and coordinating between the experiments, the middleware developers
and regional centres involved in distributed analysis prototyping.
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CRRB