Dr Peter Elmer (PRINCETON UNIVERSITY)
Performance of an experiment's simulation, reconstruction and analysis software is of critical importance to physics competitiveness and making optimum use of the available budget. In the last 18 months the performance improvement program in the CMS experiment has produced more than a ten-fold gain in reconstruction performance alone, a significant reduction in mass storage system load, a reduction in memory consumption and a variety of other gains. We present our application performance analysis methods and our techniques for higher performance memory management, I/O, data persistency, software packaging, code generation, as well as how to reduce total memory usage. We report on specific gains achieved and the main contributing causes. We discuss our estimate of future achievable gains and promising new tools and analysis methods.
|Presentation type (oral | poster)||oral|