Scali MPI Connect Release 4.4 Users Guide | Escali specs

Section: 4.5 Using SMC's built-in CPU-usage functionality

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 II Software License Terms Commencement MaintenanceGrant of License Sub-license and distribution SupportLicense Manager 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 Support Scali mailing lists SMC FAQ SMC release documentsProblem reports Platforms supported Licensing How to read this guideAcronyms and abbreviations Feedback NIC Typographic conventions Terms and conventionsGUI style font Typographic conventions Description of Scali MPI Connect Scali MPI Connect components SMC network devices Shared Memory Device Direct Access Transport DATNetwork devices Ethernet Devices Using detstat Using detctl3.2 DET 4.1 GM MyrinetInfiniband 5.1 IB 6 SCI Communication protocols on DAT-devicesChannel buffer Eagerbuffering protocol Inlining protocolTransporter protocol Support for other interconnects MPI-2 FeaturesZerocopy protocol Scali MPI Connect Release 4.4 Users Guide MPI-2 Features Scali MPI Connect environment variables Setting up a Scali MPI Connect environmentCompiling and linking Running Compiler support Linker flags Running Scali MPI Connect programs Naming conventions Basic usage Mpimon monitor programIdentity of parallel processes Standard output Controlling options to mpimonStandard input Program spec How to provide options to mpimon Network options Mpirun wrapper script Mpirun usage Running with dynamic interconnect failover capabilities Running with tcp error detection TfdrSuspending and resuming jobs Part part Debugging and profiling Debugging with a sequential debugger Assistance for external profiling Using built-in segment protect violation handlerBuilt-in-tools for debugging Debugging with Etnus Totalview Communication resources on DAT-devices Controlling communication resourcesChannelinlinethreshold size to set threshold for inlining Good programming practice with SMC Using MPIIsend, MPIIrecvUsing MPIBsend Matching MPIRecv with MPIProbe Fatal errors Error and warning messagesUser interface errors and warnings Unsafe MPI programs Mpimon options Prefix Giving numeric values to mpimonPostfix 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 Commrank send to toworldTocommonFields where Using the scanalyzeCommrank recv from fromworldFromcommonFields 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 Caching the application program on the nodes How to optimize MPI performanceBenchmarking First iteration is very slow Collective operations Memory consumption increase after warm-up Finding the best algorithm Programs in the ScaMPItst package Appendix aImage contrast enhancement Scali MPI Connect Release 4.4 Users Guide File format Original Why does not my program start to run? When things do not work troubleshootingAppendix B Why does my program terminate abnormally? Why can I not start mpid?General problems Per node installation of Scali MPI Connect Appendix C Install Scali MPI Connect for Myrinet Install Scali MPI Connect for TCP/IPInstall Scali MPI Connect for Direct Ethernet Example Install and configure SCI management software Install Scali MPI Connect for InfinibandInstall Scali MPI Connect for SCI License options Troubleshooting Network providers Uninstalling SMCScali kernel drivers Troubleshooting 3rdparty DAT providers Troubleshooting the GM provider Scali MPI Connect Release 4.4 Users Guide Bracket expansion Appendix D Bracket expansion and groupingGrouping 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