Dell announced the next generation of PowerEdge servers along with a future vision that includes continued focus on application performance along with new Near Field Communications (NFC) systems management monitoring for servers along with continued support for software-defined storage. We are pleased to see this new Dell PowerEdge server line and the inclusion of our 10/40GbE NICs.
As big data analytics become more in demand by enterprise, organizations need to be able to sort and analyze vast amounts of data to guide business decisions. Large companies using ERP solutions require intensive I/O bandwidth to process multiple transactions. Using the latest processors, enhanced in-server Flash storage and Mellanox 10/40Gb Ethernet NICs to process more in less time, the Dell family of PowerEdge servers will enable a more seamless ERP experience.
Last but not least, the new in-server storage technology allows customers to accelerate the most important data by offering high performance with NVMe Express Flash storage and deployment of Dell Fluid Cache for SAN. This technology is also ideal for high IOPS requirements in VDI environments with thousands of high performance users, while optimizing your cost per virtual desktop. – Nicolas Cuendent, Dell, September 8, 2014
Available now from Dell, Mellanox’s ConnectX-3 Pro (PEC620) and ConnectX-3 10/40GbE NICs with RDMA over Converged Ethernet (RoCE) and overlay network offloads offer optimized application latency and performance while maintaining extremely low system power consumption.
Network and Link Layer Innovation: Lossless Networks
In a previous post, I discussed that innovations are required to take advantage of 100Gb/s at every layer of the communications protocol stack networks – starting off with the need for RDMA at the transport layer. So now let’s look at the requirements at the next two layers of the protocol stack. It turns out that RDMA transport requires innovation at the Network and Link layers in order to provide a lossless infrastructure.
‘Lossless’ in this context does not mean that the network can never lose a packet, as some level of noise and data corruption is unavoidable. Rather by ‘lossless’ we mean a network that is designed such that it avoids intentional, systematic packet loss as a means of signaling congestion. That is packet loss is the exception rather than the rule.
Lossless networks can be achieved by using priority flow control at the link layer which allows packets to be forwarded only if there is buffer space available in the receiving device. In this way buffer overflow and packet loss is avoided and the network becomes lossless.
In the Ethernet world, this is standardized as 802.1 QBB Priority Flow Control (PFC) and is equivalent to putting stop lights at each intersection. A packet on a given priority class can only be forwarded when the light is green.
ConnectX-3 Pro, a new addition to the ConnectX-3 family, is showing significant CPU overhead reduction and performance improvement while running NVGRE, dramatically improving ROI for cloud providers by reducing the application running cost.
We conducted initial tests to measure the performance improvements and the CPU overhead reduction while utilizing the ConnectX-3 Pro NVGRE hardware offload engines.
Results show 2x performance improvement and 40% CPU overhead reduction!
ConnectX-3 Pro supports VXLAN hardware offload engines on top of the NVGRE one and is the first adapter in the market that supports hardware offload engines for overlay networks, i.e., NVGRE and VXLAN.
Author: Gadi Singer – Product Manager, Adapter Drivers. Gadi manages the Adapters Product Line at Mellanox Technologies. He served as Marketing Product Manager for the HCA Software division at Mellanox Technologies from 2012 to 2013. Prior to joining Mellanox, Gadi worked at Anobit and PMC-Sierra as a Product Line Manager. Mr. Singer holds a BSc degree in Electrical Engineering from Ben-Gurion University in Israel.