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- Outdated ipath_ether Configuration Setup Generates Error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
Page viii IB6054601-00 H
S
QLogic Host Channel Adapter and QLogic OFED Software Users Guide
QLogic OFED Version 1.4
sysctl parameters do not help TCP/SDP perfor-
mance in all systems. Dropped reference to
TCP/SDP.
Added NOTE that sysctl tuning is not necessary
for kernel versions 2.6.18 or higher.
“Use sysctl to Configure Kernel Parameters” on
page 5-21
Clarified descriptions of:
-long-len, -L [default: 64000]
-long-len-shmem, -s [default: 16000]
Added a reference to complete list of options.
“mpirun Tunable Options” on page 5-22
Added information on how to use rsh instead of
ssh with mpdboot.
“Using MPD” on page 5-23
In the fourth paragraph, added that
OMP_NUM_THREADS is used by other compilers’
OpenMP products, but is not a QLogic MPI envi-
ronment variable.
“QLogic MPI and Hybrid MPI/OpenMP Applica-
tions” on page 5-24
Added NOTE that TotalView debugger can be
used with Open MPI in this release.
“Debugging MPI Programs” on page 5-25
Updated other supported MPI implementations
(Tab le 6- 1). Added Table Notes.
Removed links to web sites with information about
MPI implementations running on multiple intercon-
nects; replaced with text recommending seeing
documentation provided with the version of MPI
you want to use.
“Introduction” on page 6-1
Was below Table 6-1 on page 6-1
New section “Installed Layout” on page 6-2
Added new content for configuring Intel MPI. “Setup” on page 6-3
Added new sections for the other MPIs and related
information.
“Open MPI” on page 6-3
“MVAPICH” on page 6-5
“Managing Open MPI, MVAPICH, and QLogic MPI
with the mpi-selector Utility” on page 6-6
“HP-MPI” on page 6-7
“Platform (Scali) MPI” on page 6-9
“Intel MPI” on page 6-10
“Improving Performance of Other MPIs Over IB
Verbs” on page 6-12
Removed section was Managing Other MPIs with the mpi-selector
Utility on page 4-26
Removed section was MPI over uDAPL on page 4-27