Ulf Andersson’s research while affiliated with KTH Royal Institute of Technology and other places

We examine the performance of the molecular dynamics code Parallacs and the time-domain (TD) codes in the General ElectroMagnetic Solvers (GEMS) code suite for a 32 CPUs IBM 1.1 GHz pwr4 node. Parallacs is an easily portable molecular dynamics (MD) benchmark code, which contains most features found in current general-purpose production MD codes. Timings and scaling behavior up to 16 CPUs is reported. The GEMS TD codes give the expected performance. For large problems, they are three to four times faster on a 1.1 GHz pwr4 node than on a 375 MHz pwr3 node.

Abstract We will describe the code Yee bench. This serial benchmark,code has been developed at PDC and the Parallel and Scientific Computing Institute (PSCI). Yee bench is a memory,bound code. Results for Yee bench on some of the computers available at PDC are presented. We demonstrate that the performance of Yee bench can be predicted using the results from the DAXPY part of the stream2 memory,bandwidth benchmark code. TRITA-PDC-2002:1 • ISRN KTH/PDC/R--02/1--SE • ISSN 1401-2731 3 4