Scali MPI Connect Release 4.4 Users Guide | Escali specification

Scali MPI Connect Release 4.4 - Users Guide

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Escali manual Scali MPI Connect Release 4.4 Users Guide

Contents

Scali MPI ConnectTM Users Guide Acknowledgement Copyright 1999-2005 Scali AS. All rights reserved Scali Bronze Software Certificate Maintenance II Software License Terms CommencementGrant of License Support License ManagerSub-license and distribution Export Requirements SCALI’s Obligations LICENSEE’s Obligations Title to Intellectual Property Rights Transfer Warranty of Title and Substantial Performance Compliance with Licenses Limitation on Remedies and Liabilities Scali MPI Connect Release 4.4 Users Guide Vii Proprietary Information Miscellaneous Governing Law Scali MPI Connect Release 4.4 Users Guide Table of contents Profiling with Scali MPI Connect Appendix a Example MPI code Scali MPI Connect Release 4.4 Users Guide Chapter Scali MPI Connect product context Scali mailing lists SMC FAQ SMC release documents Problem reportsSupport Platforms supported How to read this guide Acronyms and abbreviationsLicensing Feedback NIC Terms and conventions Typographic conventionsGUI style font Typographic conventions Description of Scali MPI Connect Scali MPI Connect components SMC network devices Direct Access Transport DAT Network devicesShared Memory Device Ethernet Devices Using detctl Using detstat3.2 DET Myrinet Infiniband4.1 GM 5.1 IB Communication protocols on DAT-devices 6 SCIChannel buffer Inlining protocol Eagerbuffering protocolTransporter protocol MPI-2 Features Support for other interconnectsZerocopy protocol Scali MPI Connect Release 4.4 Users Guide MPI-2 Features Setting up a Scali MPI Connect environment Compiling and linkingScali MPI Connect environment variables Running Compiler support Linker flags Running Scali MPI Connect programs Naming conventions Mpimon monitor program Basic usageIdentity of parallel processes Controlling options to mpimon Standard inputStandard output Program spec How to provide options to mpimon Network options Mpirun wrapper script Mpirun usage Running with tcp error detection Tfdr Suspending and resuming jobsRunning with dynamic interconnect failover capabilities Part part Debugging and profiling Debugging with a sequential debugger Using built-in segment protect violation handler Built-in-tools for debuggingAssistance for external profiling Debugging with Etnus Totalview Controlling communication resources Communication resources on DAT-devicesChannelinlinethreshold size to set threshold for inlining Using MPIIsend, MPIIrecv Using MPIBsendGood programming practice with SMC Matching MPIRecv with MPIProbe Error and warning messages User interface errors and warningsFatal errors Unsafe MPI programs Mpimon options Giving numeric values to mpimon PrefixPostfix Scali MPI Connect Release 4.4 Users Guide Profiling with Scali MPI Connect Example Using Scali MPI Connect built-in trace Tracing AbsRank MPIcallcommNamerankcall-dependant-parameters where +relSecs S eTime where Features Example Using Scali MPI Connect built-in timing Timing MPIcallDcallsDtimeDfreq TcallsTtimeTfreq Using the scanalyze Commrank recv from fromworldFromcommonFieldsCommrank send to toworldTocommonFields where Count!avrLen!zroLen!inline!eager!transporter! where For timing Using SMCs built-in CPU-usage functionality This produces the following report Scali MPI Connect Release 4.4 Users Guide Tuning communication resources Automatic buffer management How to optimize MPI performance BenchmarkingCaching the application program on the nodes First iteration is very slow Collective operations Memory consumption increase after warm-up Finding the best algorithm Appendix a Programs in the ScaMPItst packageImage contrast enhancement Scali MPI Connect Release 4.4 Users Guide File format Original When things do not work troubleshooting Why does not my program start to run?Appendix B Why can I not start mpid? Why does my program terminate abnormally?General problems Per node installation of Scali MPI Connect Appendix C Install Scali MPI Connect for TCP/IP Install Scali MPI Connect for Direct EthernetInstall Scali MPI Connect for Myrinet Example Install Scali MPI Connect for Infiniband Install Scali MPI Connect for SCIInstall and configure SCI management software License options Uninstalling SMC Troubleshooting Network providersScali kernel drivers Troubleshooting 3rdparty DAT providers Troubleshooting the GM provider Scali MPI Connect Release 4.4 Users Guide Appendix D Bracket expansion and grouping Bracket expansionGrouping Scali MPI Connect Release 4.4 Users Guide Appendix E Related documentation Scali MPI Connect Release 4.4 Users Guide List of figures Scali MPI Connect Release 4.4 Users Guide Index Transporter protocol SSP