The PHENIX Online Computing System

10/28/99


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Table of Contents

The PHENIX Online Computing System

PHENIX at a glance

Front-end block diagram

PHLOPS - The PHENIX Command Center

Online Computer Infrastructure

Software tools in use

Tools based on CORBA (Orbix)

Insulating Hardware with the Event Notifier

Excerpt from a configuration file

Data access and online monitoring

Data access policies

Event Iterators

ROOT is the main analysis/monitoring tool

A messaging system (for error messages)

How it’s done

“Message System-aware” code

Code snippet to give you the idea

A Publish-Subscribe scheme

EPICS with ROOT and Objectivity

Summary

Author: Martin Purschke

Email: purschke@bnl.gov

Home Page: http://www.phenix.bnl.gov/~purschke

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