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- Outdated ipath_ether Configuration Setup Generates Error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
4–InfiniPath Cluster Setup and Administration
More Information on Configuring and Loading Drivers
IB6054601-00 H 4-21
A
Unload the Driver/Modules Manually
You can also unload the driver/modules manually without using
/etc/init.d/openibd. Use the following series of commands (as a root user):
# umount /ipathfs
# fuser -k /dev/ipath* /dev/infiniband/*
# lsmod | egrep ’^ib_|^rdma_|^iw_’ | xargs modprobe -r
InfiniPath Driver Filesystem
The InfiniPath driver supplies a filesystem for exporting certain binary statistics to
user applications. By default, this filesystem is mounted in the /ipathfs
directory when the InfiniPath script is invoked with the start option (e.g. at
system startup). The filesystem is unmounted when the InfiniPath script is invoked
with the
stop option (for example, at system shutdown).
Here is a sample layout of a system with two cards:
/ipathfs
/ipathfs/00
/ipathfs/00/flash
/ipathfs/00/atomic_counters
/ipathfs/01
/ipathfs/01/flash
/ipathfs/01/atomic_counters
/ipathfs/atomic_stats
The atomic_stats file contains general driver statistics. There is one numbered
subdirectory per InfiniPath device on the system. Each numbered subdirectory
contains the following per-device files:
atomic_counters
flash
The atomic_counters file contains counters for the device, for example,
interrupts received, bytes and packets in and out, etc. The flash file is an
interface for internal diagnostic commands.
More Information on Configuring and Loading
Drivers
See the modprobe(8), modprobe.conf(5), and lsmod(8) man pages for
more information. Also see the file
/usr/share/doc/initscripts-*/sysconfig.txt for more general
information on configuration files.