The CERN Analysis Facility - A PROOF Cluster for Prompt ... - Desy
The CERN Analysis Facility - A PROOF Cluster for Prompt ... - Desy
The CERN Analysis Facility - A PROOF Cluster for Prompt ... - Desy
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46<br />
An overview of the per<strong>for</strong>mance rate<br />
Average Processing Speed (events/sec)<br />
For I/O bound job, disk throughput will be the bottleneck <strong>for</strong> most of the hardware<br />
configurations; reading data from memory will provide the best scalability and<br />
per<strong>for</strong>mance.<br />
Trade-off between the data protection and the working per<strong>for</strong>mance has to be made.<br />
Using Xrootd Preload function will help to increase the analysis speed.<br />
Number of workers<br />
2 cores vs. 1 disk seems to be a reasonable hardware ratio without using Raid<br />
Neng technology. Xu, University of Wisconsin-Madison<br />
Slide from<br />
Neng Xu<br />
(ATLAS)<br />
11/29/2007
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