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- Outdated ipath_ether Configuration Setup Generates Error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-2 IB6054601-00 H
S
Summary and Descriptions of Useful Programs
Useful programs are summarized in Table F-1. Names in blue text are linked to a
corresponding section that provides further details. Check the man pages for
more information on the programs.
Table F-1. Useful Programs
Program Name Function
chkconfig Checks the configuration state and enables/disables ser-
vices, including drivers. Can be useful for checking homoge-
neity.
dmesg Prints out bootup messages. Useful for checking for initializa-
tion problems.
ibhosts
a
Checks that all hosts in the fabric are up and visible to the
subnet manager and to each other
ibstatus
a
Checks the status of InfiniBand devices when OpenFabrics is
installed
ibtracert
a
Determines the path that InfiniBand packets travel between
two nodes
ibv_devinfo
a
Lists information about InfiniBand devices in use. Use when
OpenFabrics is enabled.
ident
b
Identifies RCS keyword strings in files. Can check for dates,
release versions, and other identifying information.
ipathbug-helper
c
A shell script that gathers status and history information for
use in analyzing InfiniPath problems
ipath_checkout
c
A bash shell script that performs sanity testing on a cluster
using QLogic hardware and InfiniPath software. When the
program runs without errors, the node is properly configured.
ipath_control
c
A shell script that manipulates various parameters for the
InfiniPath driver.
This script gathers the same information contained in board-
version, status_str, and version.
ipath_mtrr
c
A Python script that sets the MTRR registers.
ipath_pkt_test
c
Tests the InfiniBand link and bandwidth between two QLogic
host channel adapters, or, using an InfiniBand loopback con-
nector, tests within a single QLogic host channel adapter
ipathstats
c
Displays driver statistics and hardware counters, including
performance and "error" (including status) counters