The BaBar Data Reconstruction Control System

Technical Report · Wed Apr 20 04:00:00 EDT 2005

DOI:https://doi.org/10.2172/839889· OSTI ID:839889

Ceseracciu, A ^[1]

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1. SLAC

The BaBar experiment is characterized by extremely high luminosity and very large volume of data produced and stored, with increasing computing requirements each year. To fulfill these requirements a Control System has been designed and developed for the offline distributed data reconstruction system. The control system described in this paper provides the performance and flexibility needed to manage a large number of small computing farms, and takes full benefit of OO design. The infrastructure is well isolated from the processing layer, it is generic and flexible, based on a light framework providing message passing and cooperative multitasking. The system is distributed in a hierarchical way: the top-level system is organized in farms, farms in services, and services in subservices or code modules. It provides a powerful Finite State Machine framework to describe custom processing models in a simple regular language. This paper describes the design and evolution of this control system, currently in use at SLAC and Padova on {approx}450 CPUs organized in 9 farms.

• Research Organization: Stanford Linear Accelerator Center (SLAC), Menlo Park, CA
• Sponsoring Organization: SC
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 839889
• Report Number(s): SLAC-PUB-11138
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
CONTROL SYSTEMS
DESIGN
FARMS
FLEXIBILITY
LUMINOSITY
PERFORMANCE
PROCESSING
STANFORD LINEAR ACCELERATOR CENTER