Dell PowerEdge 11G服务器高性能计算内存选择指南-英文.pdf

Memory Selection Guidelines for High Performance Computing with Dell™ PowerEdge™ 11G Servers A Dell Technical White Paper By Garima Kochhar and Jacob Liberman High Performance Computing Engineering Dell Product Group October 2009 THIS WHITE PAPER IS FOR INFORMATIONAL PURPOSES ONLY, AND MAY CONTAIN TYPOGRAPHICAL ERRORS AND TECHNICAL INACCURACIES. THE CONTENT IS PROVIDED AS IS, WITHOUT EXPRESS OR IMPLIED WARRANTIES OF ANY KIND. © 2009 Dell Inc. All rights reserved. Reproduction of this material in any manner whatsoever without the express written permission of Dell Inc. is strictly forbidden. For more information, contact Dell. Dell, the DELL logo, EqualLogic, PowerEdge, PowerConnect, OpenManage and the DELL badge are trademarks of Dell Inc.; Microsoft, Outlook, and Windows are either trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. Intel, Core, Xeon, and Pentium are either registered trademarks or trademarks of Intel Corporation in the U.S. and other countries; Red Hat and Enterprise Linux are registered trademarks of Red Hat, Inc. in the United States and other countries. 2 Contents Executive Summary4 Introduction 5 PowerEdge 11G Memory Overview 5 Test Methodology 6 Performance Evaluation 7 Memory Type: UDIMMs versus RDIMMs 8 Memory Frequency: 1066 versus 1333 10 Memory Population: 1 DPC versus 2 DPC 13 Memory Population: Balanced versus Unbalanced 15 Conclusion 19 Appendix A –Summary of Key Findings 21 Appendix B –Test Cluster 22 Appendix C –Benchmark Descriptions 23 3 Executive Summary High Performance Computing Clusters (HPCCs) link together commodity servers with high-speed networks in order to achieve supercomputer-like performance. Dell’s 11th