Cray User Group, Incorporated Board of Directors President Sally Haerer (NCAR) Vice-President Sam Milosevich (ELILILLY) Secretary Margaret Simmons (SDSC) Treasurer Barbara Horner-Miller (ARSC) Regional Director Americas Barry Sharp (BCS) Regional Director Asia/Pacific Robert Bell (CSIRO) Regional Director Europe Bruno Loepfe (ETHZ) Past President Gary Jensen (UIUCNCSA) Program Lead Committee   Sam Milosevich (ELILILLY), Chair Chuck Keagle (BCS)   Dan Ferber (SGI) Jeff Kuehn (NCAR)   Hartmut Fichtel (DKRZ) Helene Kulsrud (CCR-P)   Eric Greenwade (INEEL) Leslie Southern (OSC) Local Arrangements Committee John Sell, Chair Elizabeth Stadther, Conference Coordinator No part of this publication may be reproduced by any mechanical, photographic, or electronic process without written permission from the author(s) and publisher. Permission requests should be made in writing to the publisher, the Cray User Group, at the address below. Copyright © 1999 by the Cray User Group, Incorporated. CRAY, HSX, LibSci, Autotasking, CF77, CRAY Y-MP, CRInform, MPP Apprentice, SSD, UNICOS and SuperCluster are federally registered trademarks of Cray Research, Inc. Silicon Graphics, Onyx, Onyx InfiniteReality, and IRIX are federally registered trademarks of Silicon Graphics, Inc. CF90, CRAY C90 CRAY C92, CRAY C94, CRAY C916, CRAY J90, CRAY J90se, CRAY SV1, CrayLink, CRAY ND-40, CRAY ND-30, CRAY ND, CRAY T3D, CRAY T3E, CRAY T3E-900, CRAY T3E-1200, CRAY T90, CRAY T94, CRAY T916, CRAY T932, CRAY Y-MP EL, HEXAR, CRAY NQS, Cray/REELlibrarian, IOS, Network Queueing Environment, Trusted UNICOS, UNICOS MAX, and UNICOS/mk, and GigaRing are trademarks of Cray Research, Inc. Origin, Origin2000, XFS, Performance Co-Pilot, Performer, Personal IRIS, POWER Center, POWER CHALLENGE, POWER CHALLENGEarray, POWER Channel, Power Fortran Accelerator, POWER Indigo2, POWER Indigo2 IMPACT, Onyx2 Reality, Onyx2 RealityMonster, POWER Onyx, POWER CHALLENGEarray, POWER Indigo2 Maximum IMPACT, POWER IRIS, Onyx2, POWER Onyx, POWERpath, POWERpath-2, POWER Series, POWER Store, POWERVision, ProDev, Professional IRIS, RapidApp, REACT, RealityEngine, RealityEngine2, RealityMonster, Reality Station, S2MP, see what's possible, Showcase, OpenGL, OpenMP, XFS, SiliconWorks, IRIX Networker, IRIXPro, Cellular IRIX, Trusted IRIX, Key-O-Matic, MindShare, MineSet, and NetVisualyzer are trademarks of Silicon Graphics, Inc. CUG Proceedings are produced for the Cray User Group by Bob and Karen Winget Fine Point Editorial Services CUG Office 2911 Knoll Road Shepherdstown, WV 25443 USA (1-304) 263-1756 Fax: (1-304) 263-4841 bob@fpes.com Table of Contents | Author Index | CUG Home Page