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- Outdated ipath_ether Configuration Setup Generates Error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
D–Troubleshooting
Kernel and Initialization Issues
IB6054601-00 H D-3
A
Kernel and Initialization Issues
Issues that may prevent the system from coming up properly are described in the
following sections.
Driver Load Fails Due to Unsupported Kernel
If you try to load the InfiniPath driver on a kernel that InfiniPath software does not
support, the load fails. Error messages similar to this display:
modprobe: error inserting
’/lib/modules/2.6.3-1.1659-smp/kernel/drivers/infiniband/hw/ipath/
ib_ipath.ko’: -1 Invalid module format
To correct this problem, install one of the appropriate supported Linux kernel
versions as listed in “Supported Distributions and Kernels” on page 2-4, then
reload the driver.
Rebuild or Reinstall Drivers if Different Kernel Installed
If you upgrade the kernel, then you must reboot and then rebuild or reinstall the
InfiniPath kernel modules (drivers).
To rebuild the drivers, do the following (as a root user):
# cd /usr/src/qlogic_ib/kernel-ib-<version>
# ./make-install.sh
# /etc/init.d/openibd restart
An alternative method is to re-install the InfiniPath kernel modules and then restart
the InfiniPath service. Type (as a root user):
# rpm -U --replacepkgs kernel-ib-*
# /etc/init.d/openibd restart
InfiniPath Interrupts Not Working
The InfiniPath driver cannot configure the InfiniPath link to a usable state unless
interrupts are working. Check for this problem with the command:
$ grep ib_ipath /proc/interrupts
Normal output is similar to this:
CPU0 CPU1
185: 364263 0 IO-APIC-level ib_ipath
NOTE:
The output you see may vary depending on board type, distribution, or
update level.