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C – Troubleshooting
InfiniPath MPI Troubleshooting
C-24 IB6054601-00 D
Q
The following message indicates that a node program may not be processing
incoming packets, perhaps due to a very high system load:
eager array full after overflow, flushing (head h, tail t)
The following indicates an invalid InfiniPath link protocol version:
InfiniPath version ERROR: Expected version v, found w (memkey h)
The following error messages should rarely occur and indicate internal software
problems:
ExpSend opcode h tid=j, rhf_error k: str
Asked to set timeout w/delay l, gives time in past (t2 < t1)
Error in sending packet: str
Fatal error in sending packet, exiting: str
Fatal error in sending packet: str
Here the str can give additional clues to the reason for the failure.
The following probably indicates a node failure or malfunctioning link in the fabric:
Couldn’t connect to NODENAME, rank RANK#. Time elapsed HH:MM:SS.
Still trying
NODENAME is the node (host) name, RANK# is the MPI rank, and HH:MM:SS are
the hours, minutes, and seconds since we started trying to connect.
If you get messages similar to the following, it may mean that you are trying to
receive to an invalid (unallocated) memory address, perhaps due to a logic error in
the program, usually related to malloc/free:
ipath_update_tid_err: Failed TID update for rendevous, allocation
problem
kernel: infinipath: get_user_pages (0x41 pages starting at
0x2aaaaeb50000
kernel: infinipath: Failed to lock addr 0002aaaaeb50000, 65 pages:
errno 12
TID is short for Token ID, and is part of the InfiniPath hardware. This error indicates
a failure of the program, not the hardware or driver.
C.8.12.2
MPI Messages
Some MPI error messages are issued from the parts of the code inherited from the
MPICH implementation. See the MPICH documentation for descriptions of these.
This section presents the error messages specific to the InfiniPath MPI
implementation.
- InfiniPath User Guide 1
- Page ii IB6054601-00 D 2
- 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 70
- 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 116
- IB6054601-00 D E-3 117
- E-4 IB6054601-00 D 118
- IB6054601-00 D E-5 119
- E-6 IB6054601-00 D 120
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