C – Troubleshooting InfiniPath MPI Troubleshooting

Q

$ mpirun -v

MPIRUN:Infinipath Release2.0 : Built on Wed Nov 19 17:28:58 PDT 2006 by mee

The following is the error that occurs when mpirun from the 2.0 release is being used with the 1.3 libraries:

$ mpirun-ipath-ssh -np 2 -ppn 1 -m ~/tmp/idev osu_latency

MPIRUN: mpirun from the 2.0 software distribution requires all node processes to be running 2.0 software. At least node <nodename> uses non-2.0 MPI libraries

C.8.2

Cross-compilation Issues

The 2.x PathScale compilers aren’t currently supported on systems that use the GNU 4.x compilers and compiler environment (header files and libraries). This includes Fedora Core 4, Fedora Core 5 and SLES 10. The GNU 4.x environment will be supported in the PathScale Complier Suite 3.0 release.

The current workaround for this is to compile on a supported and compatible distribution, then run the executable on one of the systems that uses the GNU 4.x compilers and environment.

■To run on FC4 or FC5, install FC3 or RHEL4/CentOS on your build machine. Compile your application on this machine.

■To run on SLES 10, install SUSE 9.3 on your build machine. Compile your application on this machine.

■Alternatively, gcc can be used as the default compiler. Set mpicc -cc=gccas described in section 3.5.3 "To Use Another Compiler".

Next, on the machines in your cluster on which the job will run, install compatibility libraries. These libraries include C++ and Fortran compatibility shared libraries and libgcc.

For an FC4 or FC5 system, you would need:

■pathscale-compilers-libs (for FC3)

■compat-gcc-32

■compat-gcc-32-g77

■compat-libstdc++-33

C-14

IB6054601-00 D

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Q-Logic IB6054601-00 D manual $ mpirun-ipath-ssh -np 2 -ppn 1 -m ~/tmp/idev osulatency
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IB6054601-00 D specifications

The Q-Logic IB6054601-00 D is a high-performance InfiniBand adapter card designed for data centers and enterprise applications requiring robust connectivity and low-latency communication. This adapter is part of QLogic's extensive portfolio of networking solutions, catering to the needs of high-performance computing (HPC), cloud computing, and virtualization environments.

One of the standout features of the IB6054601-00 D is its capability to support data transfer rates of up to 56 Gbps. This makes it ideal for applications demanding large bandwidth and quick data processing. The adapter is optimized for RDMA (Remote Direct Memory Access) technology, which allows data to be transferred directly between the memory of different computers without involving the CPU. This reduces latency and CPU overhead, leading to enhanced overall system performance.

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The adapter utilizes advanced error detection and correction mechanisms, ensuring that data integrity is maintained during transmission. With features like adaptive routing and congestion management, the IB6054601-00 D is capable of optimizing the handling of data flows, thereby enhancing performance even under heavy loads.

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