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- Outdated ipath_ether Configuration Setup Generates Error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
IB6054601-00 H 3-1
3 Step-by-Step Cluster Setup
and MPI Usage Checklists
This section describes how to set up your cluster to run high-performance MPI
jobs.
Cluster Setup
Perform the following tasks when setting up the cluster. These include BIOS,
adapter, and system settings.
1. Make sure that hardware and software installation and driver configuration
has been completed according to the instructions in the QLogic HCA and
QLogic OFED Software Install Guide. To minimize management problems,
the compute nodes of the cluster must have very similar hardware
configurations and identical software installations. See “Homogeneous
Nodes” on page 4-22 for more information.
2. Check that the BIOS is set properly. See “BIOS Settings” on page 4-5.
3. Adjust settings, including setting the appropriate MTU size. See “Adapter
and Other Settings” on page 4-22.
4. Remove unneeded services. QLogic recommends turning irqbalance off.
See “Remove Unneeded Services” on page 4-23.
5. Disable powersaving features. See “Disable Powersaving Features” on
page 4-24.
6. Check other performance tuning settings. See “Performance Settings and
Management Tips” on page 4-22.
7. If using Intel
®
processors, turn off Hyper-Threading. See “Hyper-Threading”
on page 4-24.
8. Set up the host environment to use ssh. Two methods are discussed in
“Host Environment Setup for MPI” on page 4-25.
9. Verify the cluster setup. See “Checking Cluster and Software Status” on
page 4-29. Intel cluster users can use the Intel Cluster Checker. See “The
Intel Cluster Checker” on page 4-31.