Product specifications
Table Of Contents
- Table of Contents
- 1 Introduction
- 2 Feature Overview
- 3 Step-by-Step Cluster Setup and MPI Usage Checklists
- 4 InfiniPath Cluster Setup and Administration
- Introduction
- Installed Layout
- Memory Footprint
- BIOS Settings
- InfiniPath and OpenFabrics Driver Overview
- OpenFabrics Drivers and Services Configuration and Startup
- Other Configuration: Changing the MTU Size
- Managing the InfiniPath Driver
- More Information on Configuring and Loading Drivers
- Performance Settings and Management Tips
- Host Environment Setup for MPI
- Checking Cluster and Software Status
- 5 Using QLogic MPI
- Introduction
- Getting Started with MPI
- QLogic MPI Details
- Use Wrapper Scripts for Compiling and Linking
- Configuring MPI Programs for QLogic MPI
- To Use Another Compiler
- Process Allocation
- mpihosts File Details
- Using mpirun
- Console I/O in MPI Programs
- Environment for Node Programs
- Environment Variables
- Running Multiple Versions of InfiniPath or MPI
- Job Blocking in Case of Temporary InfiniBand Link Failures
- Performance Tuning
- MPD
- QLogic MPI and Hybrid MPI/OpenMP Applications
- Debugging MPI Programs
- QLogic MPI Limitations
- 6 Using Other MPIs
- A mpirun Options Summary
- B Benchmark Programs
- C Integration with a Batch Queuing System
- D Troubleshooting
- Using LEDs to Check the State of the Adapter
- BIOS Settings
- Kernel and Initialization Issues
- OpenFabrics and InfiniPath Issues
- Stop OpenSM Before Stopping/Restarting InfiniPath
- Manual Shutdown or Restart May Hang if NFS in Use
- Load and Configure IPoIB Before Loading SDP
- Set $IBPATH for OpenFabrics Scripts
- ifconfig Does Not Display Hardware Address Properly on RHEL4
- SDP Module Not Loading
- ibsrpdm Command Hangs when Two Host Channel Adapters are Installed but Only Unit 1 is Connected to the Switch
- Outdated ipath_ether Configuration Setup Generates Error
- System Administration Troubleshooting
- Performance Issues
- QLogic MPI Troubleshooting
- Mixed Releases of MPI RPMs
- Missing mpirun Executable
- Resolving Hostname with Multi-Homed Head Node
- Cross-Compilation Issues
- Compiler/Linker Mismatch
- Compiler Cannot Find Include, Module, or Library Files
- Problem with Shell Special Characters and Wrapper Scripts
- Run Time Errors with Different MPI Implementations
- Process Limitation with ssh
- Number of Processes Exceeds ulimit for Number of Open Files
- Using MPI.mod Files
- Extending MPI Modules
- Lock Enough Memory on Nodes When Using a Batch Queuing System
- Error Creating Shared Memory Object
- gdb Gets SIG32 Signal Under mpirun -debug with the PSM Receive Progress Thread Enabled
- General Error Messages
- Error Messages Generated by mpirun
- MPI Stats
- E Write Combining
- F Useful Programs and Files
- G Recommended Reading
- Glossary
- Index

F–Useful Programs and Files
Summary and Descriptions of Useful Programs
F-8 IB6054601-00 H
S
The options available with ipath_checkout are shown in Table F-2.
In most cases of failure, the script suggests recommended actions. Also refer to
the ipath_checkout man page.
ipath_control
The ipath_control tool is a shell script that manipulates various parameters
for the InfiniPath driver. It is installed from the infinipath RPM. Many of the
parameters are used only when diagnosing problems, and may require special
system configurations. Using these options may require restarting the driver or
utility programs to recover from incorrect parameters.
Table F-2. ipath_checkout Options
Command Meaning
-h, --help These options display help messages describing how a com-
mand is used.
-v, --verbose
-vv, --vverbose
-vvv, --vvverbose
These options specify three successively higher levels of
detail in reporting test results. There are four levels of detail
in all, including the case where none of these options are
given.
-c, --continue When this option is not specified, the test terminates when
any test fails. When specified, the tests continue after a fail-
ure, with failing nodes excluded from subsequent tests.
-k, --keep This option keeps intermediate files that were created while
performing tests and compiling reports. Results are saved in
a directory created by mktemp and named
infinipath_XXXXXX or in the directory name given to
--workdir.
--workdir=DIR Use DIR to hold intermediate files created while running
tests. DIR must not already exist.
--run=LIST This option runs only the tests in LIST. See the seven tests
listed previously. For example, --run=123 will run only
tests 1, 2, and 3.
--skip=LIST This option skips the tests in LIST. See the seven tests listed
previously. For example, --skip=2457 will skip tests 2, 4,
5, and 7.
-d, --debug This option turns on the -x and -v flags in bash(1).