A – Benchmark Programs

Benchmark 3: Messaging Rate Microbenchmarks

Q

benchmark (as shown in the example above). It has been enhanced with the following additional functionality:

■Messaging rate reported as well as bandwidth

■N/2 dynamically calculated at end of run

■Allows user to run multiple processes per node and see aggregate bandwidth and messaging rates

The benchmark has been updated with code to dynamically determine which processes are on which host. This is an example showing the type of output you will see when you run mpi_multibw:

$ mpirun -np 8 ./mpi_multibw

This will run on four processes per node. Typical output might look like:

#PathScale Modified OSU MPI Bandwidth Test

(OSU Version 2.2, PathScale $Revision: 1.1 $)

#Running on 4 procs per node

# Size

Aggregate Bandwidth

(MB/s) Messages/s

1

8.150462

8150461.697283

2

16.693747

8346873.631841

4

33.086567

8271641.814960

8

66.733488

8341686.016159

16

108.097082

6756067.602089

32

213.733132

6679160.388156

64

389.544112

6086626.744516

128

569.671531

4450558.832794

256

725.826904

2835261.345093

512

839.450014

1639550.807757

1024

913.428063

892019.592596

2048

954.482747

466056.028717

4096

954.474461

233025.991467

8192

954.452712

116510.340772

16384

954.496729

58257.857017

32768

954.547225

29130.469523

65536

949.074433

14481.726572

131072

951.786548

7261.555084

262144

952.193849

3632.331272

524288

952.391830

1816.543255

1048576

952.490368

908.365600

2097152

952.539382

454.206172

4194304

952.566591

227.109573

Searching for N/2 bandwidth. Maximum Bandwidth of 954.547225 MB/s...

Found N/2 bandwidth of 476.993060 MB/s at size 94 bytes

This microbenchmark is available and can be downloaded from the QLogic website:

http://www.qlogic.com

A-4

IB6054601-00 D

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Q-Logic IB6054601-00 D manual $ mpirun -np 8 ./mpimultibw
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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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