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- Outdated ipath_ether Configuration Setup Generates Error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
IB6054601-00 H F-3
A
dmesg
dmesg prints out bootup messages. It is useful for checking for initialization
problems. You can check to see if problems were detected during the driver and
QLogic hardware initialization with the command:
$ dmesg | grep -i ipath
This command may generate more than one screen of output.
lsmod Shows status of modules in the Linux kernel. Use to check
whether drivers are loaded.
modprobe Adds or removes modules from the Linux kernel.
mpi_stress An MPI stress test program designed to load up an MPI inter-
connect with point-to-point messages while optionally check-
ing for data integrity.
mpirun
d
A front end program that starts an MPI job on an InfiniPath
cluster. Use to check the origin of the drivers.
ps Displays information on current active processes. Use to
check whether all necessary processes have been started.
rpm Package manager to install, query, verify, update, or erase
software packages. Use to check the contents of a package.
strings
e
Prints the strings of printable characters in a file. Useful for
determining contents of non-text files such as date and ver-
sion.
Table Notes
a
These programs are contained in the OpenFabrics openib-diags RPM.
b
Contained within the rcs RPM for your distribution.
c
These programs are contained in the infinipath RPM. To use these programs, install the
infinipath RPM on the nodes where you install the mpi-frontend RPM.
d
Contained in the QLogic mpi-frontend RPM.
e
Contained within the binutils RPM for your distribution.
Table F-1. Useful Programs (Continued)
Program Name Function