Note:
The workplan for AA being established now, we plan to provide
new more detailed milestones in this area for the May LHCC.
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# |
Milestone |
Date |
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1 |
Baseline plan for Phase 2 agreed (Tier-0 & Tier-1s) |
October 2004 |
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A document will describe the required resources and level of service to be provided by the Tier-1 and Tier-0 centres for Phase 2, and include estimates for continuing support beyond Phase 2. This document will provide the initial resource and service requirements for the LCG MoU, and provide a model of the base services to be expanded in the LCG TDR.. |
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2 |
AA development & support plan & resources through
2008 |
December 2004 |
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With the LCG-funding of manpower in the
applications area running down during 2004 and 2005, a plan is required to
establish the level of long-term support that is required for the products
that are essential for the experiments. This plan will lead to the definition
of more detailed milestones. |
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3 |
Baseline distributed batch environment using grid service - four experiments using LCG-2 level of functionality (general batch analysis service going beyond MC production) |
December 2004 |
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Reliable batch service incorporating Tier 0, all Tier 1s and several large Tier 2s (about 20 sites, 2000 systems) in regular use by all four experiments. Basic scheduling and data distribution functionality, including synchronisation of metadata catalogues. The system must be demonstrated with a scale and performance of 25% of that required at LHC startup. This validates a fallback solution in the event that there are delays with the development of new middleware. |
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4 |
Distributed end-user batch and interactive analysis prototype (ARDA) available and successfully tested in four experiments |
December 2004 |
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Four instances of end-to-end distributed analysis solutions implementing the ARDA middleware into the experiments’ frameworks are operational in the form of prototypes. |
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5 |
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December 2004 |
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The full chain of central data recording to tape achieves a sustained operation at 450 MB/s for a period of at least 10 days. |
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6 |
Coherent operation of the LHC computing Tier-1 centres |
July 2005 |
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The Tier-1 centres for LHC computing have operated as a reliable grid service for three months, with a full set of management, monitoring, accounting and data management tools. This is a milestone of the Tier 1 centres and ancillary services (operations centres, call centres, virtual organization management, etc.). |
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7 |
Computing service TDR |
July 2005 |
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The Computing Service TDR will specify the requirements for the Grid that will be used for the first production services for the four LHC experiments. It will include details of the architecture, functionality, capacity, performance, throughput and availability. It will include the Regional Centre plans that will have been developed to meet these requirements, and will provide cost estimates and an overall installation and verification schedule. It is assumed that the TDR will be approved by the LHCC within three months following its availability. The full process from acquisition to service verification is expected to take 12-18 months (depending on the administrative procedures of the Regional Centres). The initial service must be in full production by September 2006 (6 months before data taking). The TDR will therefore be approved after the acquisition procedures have started, but before orders are placed. |
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8 |
Phase 1 applications area software – full required functionality – available and successfully used in ATLAS, CMS & LHCb |
September 2005 |
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Products include POOL, SEAL, Geant4, ROOT, conditions database, event collections, analysis services, generator services, etc. A detailed description of the milestone as a union of specific Level 2 technical and adoption milestones will be defined with Milestone #2 in December 2004. |
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9 |
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December 2005 |
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The full chain of central data recording to tape achieves a sustained operation at 750 MB/s for a period of at least 10 days. |
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10 |
Initial production LCG middleware providing the functionality for the first LHC data taking in operation (Tier-0, Tier-1 Tier-2) |
April 2006 |
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The middleware required for the first data taking at LHC must be available at Tier-0, Tier-1 and large Tier-2 centres one year before the start of the run. |
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11 |
Initial LCG system functionality for first LHC run complete (T0&T1s) |
October 2006 |
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Tier-1 and Tier-0 centres are fully operational and prepared to increase the capacity as required for data analysis. |
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