Title :
Characterization of Scientific Workloads on Systems with Multi-Core Processors
Author :
Alam, Sadaf R. ; Barrett, Richard F. ; Kuehn, Jeffery A. ; Roth, Philip C. ; Vetter, Jeffrey S.
Author_Institution :
Comput. Sci. & Math. Div., Oak Ridge Nat. Lab., TN
Abstract :
Multi-core processors are planned for virtually all next-generation HPC systems. In a preliminary evaluation of AMD Opteron Dual-Core processor systems, we investigated the scaling behavior of a set of micro-benchmarks, kernels, and applications. In addition, we evaluated a number of processor affinity techniques for managing memory placement on these multi-core systems. We discovered that an appropriate selection of MPI task and memory placement schemes can result in over 25% performance improvement for key scientific calculations. We collected detailed performance data for several large-scale scientific applications. Analyses of the application performance results confirmed our micro-benchmark and scaling results
Keywords :
message passing; multiprocessing systems; storage management; AMD Opteron Dual-Core processor systems; MPI task; all next-generation HPC systems; memory placement management; multicore processors; multicore systems; processor affinity; scientific workloads; Application software; Bandwidth; Concurrent computing; Government; Kernel; Memory management; Multicore processing; Parallel processing; Scientific computing; Sockets; AMD Opteron; Multi-core processor; Performance characterization; micro-benchmarking; scientific applications;
Conference_Titel :
Workload Characterization, 2006 IEEE International Symposium on
Conference_Location :
San Jose, CA
Print_ISBN :
1-4244-0508-4
Electronic_ISBN :
1-4244-0509-2
DOI :
10.1109/IISWC.2006.302747
