The Particle Physics Data Grid. Final Report

Livny, Miron

Computer Sciences Department, University of Wisconsin-Madison, Madison, WI (United States)

关键词: Data Analysis;    Nuclear Physics;    Data Transmission Nuclear Physics;    99 General And Miscellaneous//Mathematics, Computing, And Information Science;    71 Classical And Quantum Mechanics, General Physics;   

DOI  :  10.2172/808652
RP-ID  :  NONE
RP-ID  :  FC02-99ER25411
RP-ID  :  808652

美国|英语

来源: UNT Digital Library

【 摘 要 】

The main objective of the Particle Physics Data Grid (PPDG) project has been to implement and evaluate distributed (Grid-enabled) data access and management technology for current and future particle and nuclear physics experiments. The specific goals of PPDG have been to design, implement, and deploy a Grid-based software infrastructure capable of supporting the data generation, processing and analysis needs common to the physics experiments represented by the participants, and to adapt experiment-specific software to operate in the Grid environment and to exploit this infrastructure. To accomplish these goals, the PPDG focused on the implementation and deployment of several critical services: reliable and efficient file replication service, high-speed data transfer services, multisite file caching and staging service, and reliable and recoverable job management services. The focus of the activity was the job management services and the interplay between these services and distributed data access in a Grid environment. Software was developed to study the interaction between HENP applications and distributed data storage fabric. One key conclusion was the need for a reliable and recoverable tool for managing large collections of interdependent jobs. An attached document provides an overview of the current status of the Directed Acyclic Graph Manager (DAGMan) with its main features and capabilities.