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4.4
manual
Typographic conventions
Install
Error and warning messages
Maintenance
Problem reports
Direct Access Transport DAT
Tuning communication resources
How to
MPI-2 Features
Using detctl
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Section: 1.6 Typographic conventions
Scali MPI Connect Release 4.4 Users Guide
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Contents
Scali MPI ConnectTM Users Guide
Acknowledgement
Copyright 1999-2005 Scali AS. All rights reserved
Scali Bronze Software Certificate
II Software License Terms Commencement
Maintenance
Grant of License
Sub-license and distribution
Support
License 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 documents
Problem reports
Platforms supported
Licensing
How to read this guide
Acronyms and abbreviations
Feedback
NIC
Typographic conventions
Terms and conventions
GUI style font
Typographic conventions
Description of Scali MPI Connect
Scali MPI Connect components
SMC network devices
Shared Memory Device
Direct Access Transport DAT
Network devices
Ethernet Devices
Using detstat
Using detctl
3.2 DET
4.1 GM
Myrinet
Infiniband
5.1 IB
6 SCI
Communication protocols on DAT-devices
Channel buffer
Eagerbuffering protocol
Inlining protocol
Transporter protocol
Support for other interconnects
MPI-2 Features
Zerocopy protocol
Scali MPI Connect Release 4.4 Users Guide
MPI-2 Features
Scali MPI Connect environment variables
Setting up a Scali MPI Connect environment
Compiling and linking
Running
Compiler support
Linker flags
Running Scali MPI Connect programs
Naming conventions
Basic usage
Mpimon monitor program
Identity of parallel processes
Standard output
Controlling options to mpimon
Standard 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 Tfdr
Suspending and resuming jobs
Part part
Debugging and profiling
Debugging with a sequential debugger
Assistance for external profiling
Using built-in segment protect violation handler
Built-in-tools for debugging
Debugging with Etnus Totalview
Communication resources on DAT-devices
Controlling communication resources
Channelinlinethreshold size to set threshold for inlining
Good programming practice with SMC
Using MPIIsend, MPIIrecv
Using MPIBsend
Matching MPIRecv with MPIProbe
Fatal errors
Error and warning messages
User interface errors and warnings
Unsafe MPI programs
Mpimon options
Prefix
Giving numeric values to mpimon
Postfix
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 scanalyze
Commrank 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 performance
Benchmarking
First iteration is very slow
Collective operations
Memory consumption increase after warm-up
Finding the best algorithm
Programs in the ScaMPItst package
Appendix a
Image 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 troubleshooting
Appendix 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/IP
Install Scali MPI Connect for Direct Ethernet
Example
Install and configure SCI management software
Install Scali MPI Connect for Infiniband
Install Scali MPI Connect for SCI
License options
Troubleshooting Network providers
Uninstalling SMC
Scali 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 grouping
Grouping
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
Related pages
Is
overclocking safe
for all configurations?
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