SCL at NEC2009

SCL's Vladimir Slavnic participated in the XXII International Symposium on Nuclear Electronics & Computing (NEC2009), organized by JINR, CERN and INRNE in Varna, Bulgaria from 7 to 14 September 2009. Various talks covered different topics: from detector and nuclear electronics, computer applications for measurement and control in scientific research, to data and storage management, as well as GRID computing.

SCL contributions at this conference were presented in two talks given by Vladimir:

- Serbian participation in Grid computing projects
Pan-European EGEE, regional SEE-GRID, and Serbian AEGIS eInfrastructures have a common aim - provision of processing and storage services for eScience research. Institute of Physics Belgrade participates in these project, providing computing and storage resources to scientific, research and development communities, fostering collaboration and providing advanced capabilities to more researchers, and attracting a wide range of new users to the Grid. We give an overview of our activities and main achievements in Grid computing projects.

- SPEEDUP – optimization and porting of path integral MC code to new computing architectures
Path integral formalism represents one of the most concise and flexible formulation of quantum theories at different levels, and provides simple description of many other complex physical systems. Recently introduced analytical approach that systematically improves convergence of numerically calculated path integrals of a generic theory leads to a significant speedup of Path Integral Monte Carlo algorithms. This is implemented in the SPEEDUP Monte Carlo code. Here we report on optimization, porting and testing of the SPEEDUP code on new computing architectures: latest Intel, and IBM POWER6 and PowerXCell CPUs. We find that the code can be highly optimized and take substantial advantage of the features of new CPU types.

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