The PCIe x8 Mellanox ConnectX-5 Dual-Port 25G Ethernet Adapter Cards provide a high performance and flexible solution with two ports of 25Gb/s InfiniBand and Ethernet connectivity, low latency, and a high message rate, plus an embedded PCIe switch and NVMe over Fabrics offloads. These intelligent remote direct memory access (RDMA) -enabled adapters provide advanced application offload capabilities for high-performance computing (HPC), cloud hyperscale, and storage platforms.

FEATURES & BENEFITS

– PCI Express Gen 3.0 and 4.0, 1.1 and 2.0 compatible

– 2.5, 5.0, 8.0, 16.0 GT/s link rate

– Embedded PCIe Switch: Up to 8 bifurcations

– Tag matching and rendezvous offloads

– Adaptive routing on reliable transport

– Burst buffer offloads for background checkpointing

– NVMe over Fabric offloads

– Backend switch elimination by host chaining

– Enhanced vSwitch/vRouter offloads

– RoCE for overlay networks

– Industry-leading throughput, low latency, low CPU utilization and high message rate

– Innovative rack design for storage and Machine Learning based on Host Chaining technology

– Smart interconnect for x86, Power, Arm, and GPU-based compute & storage platforms

– Advanced storage capabilities including NVMe over Fabric offloads

– Intelligent network adapter supporting flexible pipeline programmability

– Cutting-edge performance in virtualized networks including Network Function Virtualization (NFV)

– Enabler for efficient service chaining capabilities

– Efficient I/O consolidation, lowering data center costs and complexity

RDMA over Converged Ethernet (RoCE)

ConnectX-5 supports RoCE specifications delivering low-latency and high-performance over Ethernet networks. Leveraging data center bridging (DCB) capabilities as well as ConnectX-5 advanced congestion control hardware mechanisms, 

RoCE provides efficient low-latency RDMA services over Layer 2 and Layer 3 networks.

Enhanced Features

– Hardware-based reliable transport

– Collective operations offloads

– Vector collective operations offloads

– Mellanox PeerDirect® RDMA (aka GPUDirect®) communication acceleration

– 64/66 encoding

– Extended Reliable Connected transport (XRC)

– Dynamically Connected Transport (DCT)

– Enhanced Atomic operations

– Advanced memory mapping support, allowing user mode registration and remapping of memory (UMR)

– On demand paging (ODP)

– MPI Tag Matching

– Rendezvous protocol offload

– Out-of-order RDMA supporting Adaptive Routing

– Burst buffer offload

– In-Network Memory registration-free RDMA memory access

– Jumbo frame support (9.6KB)

Software Support

All Mellanox adapter cards are supported by Windows, Linux distributions, VMware, FreeBSD, and Citrix XENServer. ConnectX-5 adapters support OpenFabrics-based RDMA protocols and software and are compatible with configuration and management tools from OEMs and operating system vendors.