QLE7340 Qlogic Infiniband QSFP PCI-E 2.0 x8 1-Port 40Gbps Host Channel Adapter

Product Overview

The QLogic QLE7340 is a single-port Quad Data Rate (QDR) 40Gbps InfiniBand Host Channel Adapter (HCA) designed for High-Performance Computing (HPC) clusters and enterprise data centers requiring massive bandwidth and ultra-low latency.

Built around the QLogic TrueScale™ ASIC architecture, the QLE7340 is optimized to offload protocol processing and scale efficiently to thousands of nodes. It delivers highly reliable, connectionless transport service and features an advanced hardware-based design that maintains low latency even under heavy network congestion.

Technical Specifications

Key Features & Architecture

1. High Performance & Scalability

• TrueScale™ Architecture: Specifically engineered to provide predictable, low latency and high message rates as cluster sizes grow. It avoids performance degradation typical of connection-oriented architectures at scale.

• Bandwidth: Delivers up to 40 Gbps of bi-directional throughput per port (QDR speeds).

• Sub-Microsecond Latency: Features hardware and driver optimization to achieve extremely low MPI (Message Passing Interface) latency, critical for scientific simulations and financial algorithms.

2. Fabric Integration & Offloads

• Virtual Lanes (VL): Supports up to 8 VLs plus 1 management lane for Quality of Service (QoS) and traffic isolation.

• On-Board Processing: Offloads transport-level processing from the host CPU, freeing up system memory and processing power for actual computing workloads.

• Dynamic Connection Support: Employs reliable connectionless transport, eliminating the memory scaling footprint required by traditional InfiniBand adapters.

Power and Environmental Specifications

• Power Consumption:

  • Typical: ~5.5 W to 6.3 W (depending on copper vs. active optical cabling used)

• Temperature:

  • Operating: 0°C to 55°C (32°F to 131°F)

  • Storage: -40°C to 70°C (-40°F to 158°F)

• Relative Humidity: 10% to 90% (non-condensing)

• Airflow Requirement: 100 LFM (Linear Feet per Minute)

Software, API, and Protocol Support

• InfiniBand Protocols: IP over InfiniBand (IPoIB), SCSI RDMA Protocol (SRP), and Session Direct.

• APIs & Middleware:

  • Full support for OpenFabrics Enterprise Distribution (OFED).

  • Native support for major MPI libraries (Intel MPI, OpenMPI, MVAPICH).

• Operating System Compatibility:

  • Red Hat Enterprise Linux (RHEL)

  • SUSE Linux Enterprise Server (SLES)

  • Windows Server (with appropriate OFED/TrueScale software stack)