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- Outdated ipath_ether Configuration Setup Generates Error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
6–Using Other MPIs
Open MPI
IB6054601-00 H 6-3
A
Open MPI
Open MPI is an open source MPI-2 implementation from the Open MPI Project.
Pre-compiled versions of Open MPI version 1.2.8 that run over PSM and are built
with the GCC, PGI, PathScale, and Intel compilers are available with the QLogic
download.
Open MPI that runs over Verbs and is pre-compiled with the GNU compiler is also
available.
Open MPI can be managed with the mpi-selector utility, as described in
“Managing Open MPI, MVAPICH, and QLogic MPI with the mpi-selector Utility” on
page 6-6.
Installation
Follow the instructions in the QLogic Host Channel Adapter and QLogic OFED
Software Install Guide for installing Open MPI.
Newer versions than the one supplied with this release can be installed after
QLogic OFED 1.4 has already been installed; these may be downloaded from the
Open MPI web site. Note that versions that are released after the QLogic
OFED 1.4 release will not be supported.
Setup
If you use the mpi-selector tool, the necessary setup is done for you. If you do
not use this tool, you can put your Open MPI installation directory in the PATH:
add <$mpi_home>/bin to PATH
The <$mpi_home> is the directory path where the desired MPI was installed.
Compiling Open MPI Applications
As with QLogic MPI, QLogic recommends that you use the included wrapper
scripts that invoke the underlying compiler (see Table 6-2).
Table 6-2. Open MPI Wrapper Scripts
Wrapper Script Name Language
mpicc C
mpiCC, mpicxx, or mpic++ C++
mpif77 Fortran 77
mpif90 Fortran 90