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- Outdated ipath_ether Configuration Setup Generates Error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-4 IB6054601-00 H
S
ibhosts
This tool determines if all the hosts in your InfiniBand fabric are up and visible to
the subnet manager and to each other. It is installed from the openib-diag
RPM. Running ibhosts (as a root user) produces output similar to this when run
from a node on the InfiniBand fabric:
# ibhosts
Ca : 0x0008f10001280000 ports 2 "Voltaire InfiniBand
Fiber-Channel Router"
Ca : 0x0011750000ff9869 ports 1 "idev-11"
Ca : 0x0011750000ff9878 ports 1 "idev-05"
Ca : 0x0011750000ff985c ports 1 "idev-06"
Ca : 0x0011750000ff9873 ports 1 "idev-04"
ibstatus
This program displays basic information on the status of InfiniBand devices that
are currently in use when OpenFabrics RPMs are installed. It is installed from the
openib-diag RPM.
Following is a sample output for the SDR adapters:
$ ibstatus
Infiniband device ’ipath0’ port 1 status:
default gid: fe80:0000:0000:0000:0011:7500:0005:602f
base lid: 0x35
sm lid: 0x2
state: 4: ACTIVE
phys state: 5: LinkUp
rate: 10 Gb/sec (4X)
Following is a sample output for the DDR adapters; note the difference in rate:
$ ibstatus
Infiniband device ’ipath0’ port 1 status:
default gid: fe80:0000:0000:0000:0011:7500:00ff:9608
base lid: 0xb
sm lid: 0x1
state: 4: ACTIVE
phys state: 5: LinkUp
rate: 20 Gb/sec (4X DDR)