Using Other MPI Implementations

3 – Using InfiniPath MPI MPD

-statsfile file-prefix

Specifies alternate file to receive the output from the -print-statsoption. Default: stderr

3.6

Support for multiple MPI implementations has been added. You can use a different version of MPI and achieve the high-bandwidth and low-latency performance that it is standard with InfiniPath MPI.

The currently supported implementations are HP-MPI, OpenMPI and Scali.

These MPI implementations will run on multiple interconnects, and have their own mechanisms for selecting which one you will run on. Please see the documentation provided with the version of MPI that you wish to use.

If you have downloaded and installed another MPI implementation, you will need to set your PATH up to pick up the version of MPI you wish to use.

You will also need to set LD_LIBRARY_PATH, both in your local environment and in an rcfile (such as .mpirunrc, .bashrc or .cshrc) that will be invoked on remote nodes. See section 3.5.8 and section 3.5.3.1 for information on setting up your environment and section C.8.6 for information on setting your run-time library path. See also section C.8.7 for information on run time errors that may occur if there are MPI version mismatches.

3.7

MPI Over uDAPL

Some MPI implementations can be run over uDAPL. uDAPL is the user mode version of the Direct Access Provider Library (DAPL). Examples of such MPI implementations are Intel MPI and one option on OpenMPI.

If you are running such an MPI implementation, the rdma_cm and rdma_ucm modules will need to be loaded. To test these modules, use these commands (as root):

#modprobe rdma_cm

#modprobe rdma_ucm

To ensure that the modules are loaded whenever the driver is loaded, add rdma_cm and rdma_ucm to the OPENFABRICS_MODULES assignment in

/etc/sysconfig/infinipath.

3.8

MPD

MPD is an alternative to mpirun for launching MPI jobs. It is described briefly in the following sections.

IB6054601-00 D

3-17

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.

Q-Logic IB6054601-00 D manual Using Other MPI Implementations, MPI Over uDAPL

Models: IB6054601-00 D