In order to better scale their networks, datacenter operators often create overlay networks that carry traffic from individual virtual machines over logical tunnels in

Overlay

encapsulated formats such as NVGRE and VXLAN. While this solves network scalability issues, it hides the TCP packet from the hardware offloading engines, placing

Networks

higher loads on the host CPU. ConnectX-6 effectively addresses this by providing advanced NVGRE and VXLAN hardware offloading engines that encapsulate and de-

capsulate the overlay protocol.

ConnectX-6, utilizing IBTA RDMA (Remote Data Memory Access) and RoCE (RDMA over Converged Ethernet) technology, delivers low-latency and high-performance over

RDMA and RDMA

InfiniBand and Ethernet networks. Leveraging datacenter bridging (DCB) capabilities as well as ConnectX-6 advanced congestion control hardware mechanisms, RoCE

over Converged

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

Ethernet (RoCE)

PeerDirect™ communication provides high efficiency RDMA access by eliminating unnecessary internal data copies between components on the PCIe bus (for example,

NVIDIA

from GPU to CPU), and therefore significantly reduces application run time. ConnectX-6 advanced acceleration technology enables higher cluster efficiency and

PeerDirect™

scalability to tens of thousands of nodes.

Adapter functionality enables reduced CPU overhead leaving more CPU resources available for computation tasks.

CPU Offload

Open vSwitch (OVS) offload using ASAP

• Flexible match-action flow tables

• Tunneling encapsulation/decapsulation

Support for port-based Quality of Service enabling various application requirements for latency and SLA.

Quality of

Service (QoS)

ConnectX-6 provides dedicated adapter resources and guaranteed isolation and protection for virtual machines within the server.

Hardware-based

I/O

Virtualization

A consolidated compute and storage network achieves significant cost-performance advantages over multi-fabric networks. Standard block and file access protocols can

Storage

leverage:

Acceleration

•

RDMA for high-performance storage access

•

NVMe over Fabric offloads for target machine

•

Erasure Coding

•

T10-DIF Signature Handover

ConnectX-6 SR-IOV technology provides dedicated adapter resources and guaranteed isolation and protection for virtual machines (VM) within the server.

SR-IOV

2(TM)

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