Last update: Apr 1, 2000
Brookhaven National Laboratory
Speaker: Richard IbbotsonThe computing environment for event reconstruction and analysis at RHIC currently includes a farm of 200 Pentium-based computers, several NFS and AFS servers, an HPSS storage system and 10TB of RAID disk. The configuration of this environment is continuously evolving to meet the expanding needs of the experiments as the RHIC facility nears operation.
A system is being developed at BNL to monitor the performance of these various subsystems, as well as to understand changes in the performance due to configuration changes. An array of metrics is being developed to provide measures of latencies, transfer rates and network connectivity. This system will provide a running log of these metrics and will allow correlations between metrics to be studied.
In order to determine the performance of specific tasks on these distributed systems and provide platform independence, a Java-based mobile-agent system is being used as the framework for task distribution. Both the measurements and the code used to perform the measurements are stored in a central database for scalability and reproducibility. The design of the system and initial experiences in the RHIC facility will be presented.
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