Manuali utente per Escali 4.4

Sommario

• Chapter 1 Introduction

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  • 1.1 Scali MPI Connect product context

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  • 1.2 Support

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    • 1.2.1 Scali mailing lists

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    • 1.2.2 SMC FAQ

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    • 1.2.3 SMC release documents

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    • 1.2.4 Problem reports

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    • 1.2.5 Platforms supported

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    • 1.2.6 Licensing

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    • 1.2.7 Feedback

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  • 1.3 How to read this guide

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  • 1.4 Acronyms and abbreviations

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  • 1.5 Terms and conventions

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  • 1.6 Typographic conventions

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• Chapter 2 Description of Scali MPI Connect

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  • 2.1 Scali MPI Connect components

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  • 2.2 SMC network devices

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    • 2.2.1 Network devices

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    • 2.2.2 Shared Memory Device

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    • 2.2.3 Ethernet Devices

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    • 2.2.4 Myrinet

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    • 2.2.5 Infiniband

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    • 2.2.6 SCI

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  • 2.3 Communication protocols on DAT-devices

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    • 2.3.1 Channel buffer

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    • 2.3.2 Inlining protocol

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    • 2.3.3 Eagerbuffering protocol

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    • 2.3.4 Transporter protocol

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    • 2.3.5 Zerocopy protocol

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  • 2.4 Support for other interconnects

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  • 2.5 MPI-2 Features

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• Chapter 3 Using Scali MPI Connect

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  • 3.1 Setting up a Scali MPI Connect environment

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    • 3.1.1 Scali MPI Connect environment variables

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  • 3.2 Compiling and linking

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    • 3.2.1 Running

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    • 3.2.2 Compiler support

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    • 3.2.3 Linker flags

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    • 3.2.4 Notes on Compiling and linking on AMD64 and EM64T

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    • 3.2.5 Notes on Compiling and linking on Power series

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    • 3.2.6 Notes on compiling with MPI-2 features

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  • 3.3 Running Scali MPI Connect programs

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    • 3.3.1 Naming conventions

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    • 3.3.2 mpimon - monitor program

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    • 3.3.3 mpirun - wrapper script

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  • 3.4 Suspending and resuming jobs

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  • 3.5 Running with dynamic interconnect failover capabilities

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  • 3.6 Running with tcp error detection - TFDR

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  • 3.7 Debugging and profiling

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    • 3.7.1 Debugging with a sequential debugger

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    • 3.7.2 Built-in-tools for debugging

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    • 3.7.3 Assistance for external profiling

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    • 3.7.4 Debugging with Etnus Totalview

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  • 3.8 Controlling communication resources

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    • 3.8.1 Communication resources on DAT-devices

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  • 3.9 Good programming practice with SMC

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    • 3.9.1 Matching MPI_Recv() with MPI_Probe()

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    • 3.9.2 Using MPI_Isend(), MPI_Irecv()

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    • 3.9.3 Using MPI_Bsend()

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    • 3.9.4 Avoid starving MPI-processes - fairness

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    • 3.9.5 Unsafe MPI programs

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    • 3.9.6 Name space pollution

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  • 3.10 Error and warning messages

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    • 3.10.1 User interface errors and warnings

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    • 3.10.2 Fatal errors

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  • 3.11 Mpimon options

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    • 3.11.1 Giving numeric values to mpimon

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• Chapter 4 Profiling with Scali MPI Connect

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  • 4.1 Example

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  • 4.2 Tracing

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    • 4.2.1 Using Scali MPI Connect built-in trace

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    • 4.2.2 Features

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  • 4.3 Timing

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    • 4.3.1 Using Scali MPI Connect built-in timing

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  • 4.4 Using the scanalyze

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    • 4.4.1 Analysing all2all

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  • 4.5 Using SMC's built-in CPU-usage functionality

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• Chapter 5 Tuning SMC to your application

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  • 5.1 Tuning communication resources

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    • 5.1.1 Automatic buffer management

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  • 5.2 How to optimize MPI performance

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    • 5.2.1 Performance analysis

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    • 5.2.2 Using processor-power to poll

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    • 5.2.3 Reorder network traffic to avoid conflicts

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  • 5.3 Benchmarking

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    • 5.3.1 How to get expected performance

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    • 5.3.2 Memory consumption increase after warm-up

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  • 5.4 Collective operations

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    • 5.4.1 Finding the best algorithm

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• Appendix A Example MPI code

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  • A-1 Programs in the ScaMPItst package

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  • A-2 Image contrast enhancement

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• Appendix B Troubleshooting

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  • B-1 When things do not work - troubleshooting

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• Appendix C Install Scali MPI Connect

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  • C-1 Per node installation of Scali MPI Connect

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  • C-2 Install Scali MPI Connect for TCP/IP

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  • C-3 Install Scali MPI Connect for Direct Ethernet

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  • C-4 Install Scali MPI Connect for Myrinet

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  • C-5 Install Scali MPI Connect for Infiniband

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  • C-6 Install Scali MPI Connect for SCI

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  • C-7 Install and configure SCI management software

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  • C-8 License options

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  • C-9 Scali kernel drivers

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  • C-10 Uninstalling SMC

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  • C-11 Troubleshooting Network providers

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• Appendix D Bracket expansion and grouping

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  • D-1 Bracket expansion

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  • D-2 Grouping

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• Appendix E Related documentation

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