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- Outdated ipath_ether Configuration Setup Generates Error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
Managing the InfiniPath Driver
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Start, Stop, or Restart InfiniPath
Restart the software if you install a new InfiniPath release, change driver options,
or do manual testing.
You can start, stop, or restart (as a root user) InfiniPath support with:
# /etc/init.d/openibd [start | stop | restart]
This method will not reboot the system. The following set of commands shows
how to use this script.
If OpenSM is configured and running, it must be stopped before the openibd
stop command, and must be started after the openibd start command. Omit
the commands to start/stop opensmd if you are not running it on that node.
The sequence of commands to restart the driver are as follows:
# /etc/init.d/opensmd stop
# /etc/init.d/openibd stop
...
# /etc/init.d/openibd start
# /etc/init.d/opensmd start
The ... represents whatever activity you are engaged in after infinipath is
stopped.
An equivalent way to restart the driver this is to use same sequence shown
previously, except use the restart command instead of start and stop:
# /etc/init.d/opensmd stop
# /etc/init.d/openibd restart
# /etc/init.d/opensmd start
You can check to see if opensmd is running by using the following command (as a
root user); if there is no output, opensmd is not configured to run:
# /sbin/chkconfig --list opensmd | grep -w on
When you need to determine which InfiniPath and OpenFabrics modules are
running, use the following command. You do not need to be a root user.
$ lsmod | egrep ’ipath_|ib_|rdma_|findex’
NOTE:
Stopping or restarting openibd terminates any QLogic MPI processes, as
well as any OpenFabrics processes that are running at the time.