osu_bw

Q

A – Benchmark Programs Benchmark 3: Messaging Rate Microbenchmarks

MPI_Isend function, while the receiving node consumes them as quickly as it can using the non-blocking MPI_Irecv, and then returns a zero-length acknowledgement when all of the set has been received.

You can run this program with:

$ mpirun -np 2 -ppn 1 -m mpihosts osu_bw Typical output might look like:

# OSU MPI Bandwidth Test (Version 2.0)

# Size

Bandwidth (MB/s)

1

2.250465

2

4.475789

4

8.979276

8

17.952547

16

27.615041

32

52.676363

64

104.704225

128

198.347505

256

335.396929

512

521.273433

1024

829.369420

2048

884.249845

4096

926.723948

8192

934.093084

16384

941.191459

32768

938.179872

65536

945.163478

131072

950.206048

262144

951.938802

524288

952.912385

1048576

953.716825

2097152

953.922714

4194304

954.119999

Note that the increase in measured bandwidth with messages size results from the fact that latency’s contribution to the measured time interval becomes relatively smaller.

A.3

Benchmark 3: Messaging Rate Microbenchmarks

mpi_multibw is the microbenchmark used to highlight QLogic’s messaging rate results. This benchmark is a modified form of the OSU NOWlab’s

IB6054601-00 D

A-3

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Q-Logic IB6054601-00 D manual Benchmark 3 Messaging Rate Microbenchmarks
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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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