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C – Troubleshooting
InfiniPath MPI Troubleshooting
IB6054601-00 D C-15
Q
On a SLES 10 system, you would need:
■ compat-libstdc++ (for FC3)
■ compat-libstdc++5 (for SLES 10)
Depending upon the application, you may need to use the -W1,-Bstatic option to
use the static versions of some libraries.
C.8.3
Compiler/Linker Mismatch
This is a typical error message if the compiler and linker are not matching in C and
C++ programs:
$ export MPICH_CC=gcc
$ mpicc mpiworld.c
/usr/bin/ld: cannot find -lmpichabiglue_gcc3
collect2: ld returned 1 exit status
C.8.4
Compiler Can’t Find Include, Module or Library Files
RPMs can be installed in any location by using the --prefix option. This can
introduce errors when compiling, if the compiler cannot find the include files (and
module files for Fortran90 and Fortran95) from
mpi-devel*, and the libraries from
mpi-libs* in the new locations. Compiler errors similar to this can occur:
$ mpicc myprogram.c
/usr/bin/ld: cannot find -lmpich
collect2: ld returned 1 exit status
NOTE: As noted in section 3.5.2 of the InfiniPath Install Guide, all development
files now reside in specific *-Devel subdirectories.
On development nodes, programs must be compiled with the appropriate options
so that the include files and the libraries can be found in the new locations. In
addition, when running programs on compute nodes, you need to insure that the
run-time library path is the same as the path that was used to compile the program.
The examples below show what compiler options to use for include files and libraries
on the development nodes, and how to specify this new library path on the compute
nodes for the runtime linker. The affected RPMs are:
mpi-devel* (on the development nodes)
mpi-libs* (on the development or compute nodes)
- 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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