Section 3

Using InfiniPath MPI

This chapter provides information on using InfiniPath MPI. Examples are provided for compiling and running MPI programs.

3.1

InfiniPath MPI

QLogic’s implementation of the MPI standard is derived from the MPICH reference implementation Version 1.2.6. The InfiniPath MPI libraries have been highly tuned for the InfiniPath Interconnect, and will not run over other interconnects.

InfiniPath MPI is an implementation of the original MPI 1.2 standard. The MPI-2 standard provides several enhancements of the original standard. Of the MPI-2 features, InfiniPath MPI includes only the MPI-IO features implemented in ROMIO version 1.2.6 and the generalized MPI_Alltoallw communication exchange.

In this Version 2.0release, the InfiniPath MPI implementation supports hybrid MPI/OpenMP, and other multi-threaded programs, as long as only one thread uses MPI. For more information, see section 3.10.

3.2

Other MPI Implementations

As of this release, other MPI implementations can now be run over InfiniPath. The currently supported implementations are HP-MPI, OpenMPI and Scali. For more information see section 3.6.

3.3

Getting Started with MPI

In this section you will learn how to compile and run some simple example programs that are included in the InfiniPath software product. Compiling and running these examples lets you verify that InfiniPath MPI and its components have been properly installed on your cluster. See appendix C.8 if you have problems compiling or running these examples.

IB6054601-00 D

3-1

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Q-Logic IB6054601-00 D manual InfiniPath MPI, Other MPI Implementations, Getting Started with MPI
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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.

The architecture of the IB6054601-00 D includes support for a dual-port design, which offers increased bandwidth, redundancy, and fault tolerance. This dual-port configuration is especially advantageous for environments that require high availability and reliability, such as financial services and mission-critical applications.

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.

In terms of compatibility, the Q-Logic IB6054601-00 D supports a wide range of operating systems and virtualization technologies, making it easy to integrate into diverse IT environments. It also includes drivers and software packages that facilitate seamless deployment and management.

In addition to high-speed connectivity, the adapter is designed with power efficiency in mind. It adheres to Energy Star regulations, helping organizations lower their operational costs while minimizing their environmental footprint.

Overall, the Q-Logic IB6054601-00 D stands out for its high throughput, low latency, and reliability. Its combination of advanced features and technologies positions it as an excellent choice for organizations looking to enhance their data center performance and maximize the efficiency of their network infrastructure. With the growing demands for faster and more efficient data transfer, solutions like the IB6054601-00 D are essential in meeting the evolving needs of modern enterprises.
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