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InfiniPath User Guide
Version 2.0
Page x
IB6054601-00
D
Q
Notes
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InfiniPath User Guide
1
Page ii IB6054601-00 D
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IB6054601-00 D Page iii
3
Table of Contents
5
Page vi IB6054601-00 D
6
Appendix A Benchmark Programs
7
Appendix C Troubleshooting
7
Page viii IB6054601-00 D
8
IB6054601-00 D Page ix
9
Version 2.0
10
Page x IB6054601-00 D
10
Introduction
11
Overview
12
Switches
12
Interoperability
12
What’s New in this Release
13
Software Components
15
■ The InfiniPath User Guide
16
■ Release Notes
16
■ Quick Start Guide
16
1 – Introduction
18
1-8 IB6054601-00 D
18
Installed Layout
19
Memory Footprint
20
■ 1 adapter per node
21
InfiniPath Driver Startup
23
InfiniPath Driver Filesystem
23
Subnet Management Agent
24
Layered Ethernet Driver
24
Software Status
33
Process Limitation with ssh
35
Remove Unneeded Services
35
Disable Powersaving Features
36
Balanced Processor Power
37
CPU Affinity
37
Hyper-Threading
38
Homogeneous Nodes
38
Customer Acceptance Utility
40
2-24 IB6054601-00 D
42
Using InfiniPath MPI
43
An Example C Program
44
InfiniPath MPI Details
47
Compiling and Linking
49
To Use Another Compiler
50
Compiler and Linker Variables
51
Cross-compilation Issues
51
Running MPI Programs
52
The mpihosts File
53
Console I/O in MPI Programs
54
Environment for Node Programs
54
Multiprocessor Nodes
56
MPI Over uDAPL
59
MPD Description
60
Using MPD
60
File I/O in MPI
60
MPI-IO with ROMIO
61
Debugging MPI Programs
62
MPI Errors
62
Using Debuggers
62
InfiniPath MPI Limitations
63
Benchmark Programs
65
A – Benchmark Programs
70
A-6 IB6054601-00 D
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A Batch Queuing Script
71
Allocating Resources
71
Generating the mpihosts File
72
Simple Process Management
73
Troubleshooting
75
BIOS Settings
76
Incorrect MTRR Mapping
77
Software Installation Issues
79
OpenFabrics Dependencies
79
Install Warning with RHEL4U2
79
Kernel Needs CONFIG_PCI_MSI=y
82
OpenFabrics Issues
86
Broken Intermediate Link
87
Performance Issues
87
MVAPICH Performance Issues
87
Mixed Releases of MPI RPMs
87
Compiler/Linker Mismatch
89
Using MPI.mod Files
93
Extending MPI Modules
94
C.8.12.1
96
MPI Messages
98
C.8.12.3
101
MPI Stats
102
Restarting InfiniPath
103
Recommended Reading
113
Clusters
114
Glossary
115
E – Glossary
116
E-2 IB6054601-00 D
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IB6054601-00 D E-3
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E-4 IB6054601-00 D
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IB6054601-00 D E-5
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E-6 IB6054601-00 D
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