Grid & Utility Computing: Do they really mean Pervasive Services ICPS 2006 – Panel Manish Parashar TASSL, Rutgers University, Piscataway, NJ USA

Definitely not!  Separate communities, conferences, journals, etc.  GGF, EGA, Grid, SC, CCGrid, HPDC, ICPS, Pervasive, Percom, IJGC, Ubicomp, …  Separate history/perspectives  HPC, big science, sensor networks, real-time  Separate demigods  John McCarthy, Fenando Corbato, Ian Foster, Mark Weiser  Separate standards bodies and standards  IETF, OASIS, DMTF, W3C, SNIA, WSRF, OGSA, 802.XX, OMA, …  Separate software  TeraGrid, Globus, Unicore, eBiquity, Gaia, Datafountain, Oxygen, SmartSpace, Aura, AccessGrid, EGEE, OSG, …  Separate sponsors, patrons, funding sources

So what are they about?  Grid/Utility Computing Seamless, secure, on-demand access to (and aggregation of) geographically distributed computing, communication, data resources I.e., provide computing resources (computers, communication, data, instruments) as pervasive services  Pervasive/Ubiquitous Computing Integrate computation/communication into the environment I.e., provide information and context as pervasive services

Hmm, they do have similar underlying isssues/challenges … Large scale distributed computing Service description, discovery, and composition Security, authentication and trust Data/Information management Dynamic assembly of components Dynamic adaptation to state and context Availability, reliability, trust, … Management and self-management Standards and interoperability …

Also, …  Grid/Utility applications have pervasive aspects Grid/Utility computing uses pervasive computing to couple with the real world  E.g., provide dynamic (real-time) data, information to scientific, engineering, business processes  Pervasive application have Grid/Utility aspects Pervasive computing uses Grid/Utility computing to provides services  E.g., assimilate/process large amounts of information

The Big Picture … Grid computing! Utility Computing! On-demand computing! Pervasive computing! Ubiquitous computing Pervasive Services Pervasive Grid Envs/Apps

Different aspects of an overall solution?  Applications that require Knowledge-based Information- driven Context-aware Computationally- intensive Distributed solutions! Autonomics Pervasive/ Ubiquitous Semantics Grid/Utility PGE Crisis management, monitor and predict natural phenomenon, monitor and manage engineering systems, optimize business processes

The key barrier “ our ability to reason are limited by our experiences …” L. Wittgenstein The biggest challenges are non-technical  People from disparate fields with different perspectives, experiences, languages, etc., must work and evolve together!