Any Data, Anytime, Anywhere

Presenters: Matevz Tadel, UCSD Any Data, Anytime, Anywhere (AAA) is an NSF funded project aiming at establishing an advanced remote data-access and data-management service for the needs of the CMS experiment at Large Hadron Colider at CERN. CMS is exploring the new energy frontier opened up by the LHC accelerator where physicsts expect to find new particles and resonances that could help explain the origin of mass (Higgs boson) and dark matter. CMS is an international collaboration of more than 3000 people from 180 institutions and 40 countries. The following institutions from California are members of CMS: Caltech, LLNL, UCD, UCLA, UCR, UCSB, and UCSD. If one also considers the competing LHC collaboration, ATLAS, the list grows to include LBNL, SLAC, UCB, UCI, and UCSC. The AAA project started in fall 2011 and had already helped to resolve issues by leading the effort in optimization of I/O stack of CMS software and by exposing the storage of all US computing sites via the XRootD software suite (a framework for fast, low latency, and scalable data access developed at SLAC). All data is made available through a central entry point that redirects clients to an appropriate data-server. Significant effort was used to establish monitoring of data-server performance and user activity allowing a detailed analysis of user data-access patterns. Required software elements will be discussed in detail so that other interested parties can begin to use the same technology. AAA is also looking for new partnerships, especially within the context of OSG.