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Myricom brings 10-Gigabit Ethernet to High Performance Computing

Myri-10G PCI-Express NIC

Myricom, the company that pioneered high-performance cluster interconnect, is now shipping Myri-10G products, a convergence that leverages 10-Gigabit Ethernet technology into the HPC world, and HPC techniques into the Ethernet world.

The new Myri-10G solutions are 10-Gigabit Ethernet from Myricom, and more. Myri-10G’s Myrinet extensions open a broader universe of system solutions than Ethernet alone can provide.

In Ethernet mode with the bundled drivers for Linux, Windows, Solaris, Mac OS X, or FreeBSD, Myri-10G network-interface cards (NICs) deliver maximal performance at minimal cost, and are fully compliant with Ethernet standards. Connect the NIC port to your 10-Gigabit Ethernet switch and you’ll see near-wire-rate TCP/IP and UDP/IP throughput (9.7-9.9 Gbits/s).

The broader software support for 10-Gigabit Myrinet and Low-Latency 10-Gigabit Ethernet is MX (Myrinet Express). Connect the NIC to a 10-Gigabit Myrinet switch or to a low-latency 10-Gigabit Ethernet switch, and MX unleashes the capabilities of a network that supports the same software interfaces as Ethernet, plus low-latency, kernel-bypass communication using MPI and Sockets APIs. Also, 10-Gigabit Myrinet is interoperable with 10-Gigabit Ethernet for connections to IP networks (grids) and storage

Myri-10G dual-protocol NICs

Myri-10G NICs connect to hosts through PCI-Express x8, a 2+2 GigaByte/s full-duplex IO fabric that is fast enough to keep up with the 1.25+1.25 GigaByte/s network port. A PCI-X bus, 1 GigaByte/s at best, has only 40% of the 2.5 GigaByte/s peak data rate needed for 10-Gigabit networking. Myri-10G NICs are the first near-wire-speed 10-Gigabit NICs.

These NICs, like all earlier Myrinet NICs, include processors and firmware to offload network protocol processing, minimizing host-CPU utilization and enabling low-latency kernel-bypass communication directly with applications.

Myri-10G Technical Summary

• Physical Links are 10-Gigabit Ethernet
– At the Physical (PHY, layer-1) level, the ports of Myricom's Myri-10G chips are XAUI, per IEEE 802.3ae. The data rate is 10+10 Gigabits per second, full-duplex.
– XAUI is readily converted to other 10-Gigabit Ethernet PHYs. The ports of current NIC and switch products are 10GBase-CX4, 10GBase-R, or XAUI over ribbon fiber.
– At the Data-Link (layer-2) level, the links may be either Ethernet or Myrinet protocols.

• Industry-standard Cables: choice of copper or fiber
– 10GBase-CX4 copper cables to 15m or ribbon-fiber cables to 200m are the best choices for low-latency applications.
– 10GBase-R serial fiber is available for 10-Gigabit Ethernet applications.

• NICs are dual-protocol
– These 8-lane PCI-Express NICs are firmware-controlled offload engines, just like all earlier Myrinet NICs.
– Connect the NIC port to a 10-Gigabit Ethernet switch, and the NIC operates with the bundled 10-Gigabit Ethernet software support as a protocol-offload 10-Gigabit Ethernet NIC.
– Connect the NIC port to a 10-Gigabit Myrinet switch, and the NIC operates with the optional Myrinet Express (MX-10G) software support as a 10-Gigabit Myrinet NIC.

• Switches are 10-Gigabit Myrinet
– Although Myri-10G leverages 10-Gigabit Ethernet technology at the link level, it retains the efficiency, simplicity, and scalability of Myrinet switching.
– These 10-Gigabit Myrinet switches and full-bisection Clos “Network in a box” products are similar except for data rates to Myrinet-2000 switches.
– Future switches will support a mix of Ethernet and Myrinet ports. The internal switching is Myrinet, with protocol conversion to external Ethernet ports. (Switch line cards with 10-Gigabit Ethernet external ports will be available in 2Q06.)

• 10-Gigabit Ethernet Software support
– The driver and firmware for Myri-10G 10-Gigabit Ethernet operation is included (bundled) with the NIC.
– Myri-10G-optimized iSCSI drivers are in development, and will also be included when available.

• The Myrinet Software support is Myrinet Express (MX)
– MX-10G is the low-level message-passing system for the Myri-10G products.
– MX-2G for Myrinet-2000 PCI-X NICs is available now. (Myricom software support has always spanned two generations of NICs.)
– Includes ethernet emulation (TCP/IP, UDP/IP) and a full suite of popular APIs, including MPICH-MX, MPICH2-MX, Sockets-MX, and DAPL-MX.

• Performance with the Myri-10G PCI-Express NICs
– Myrinet mode: 2µs MPI latency with MPICH-MX or MPICH2-MX, and 1.2 GBytes/s one-way data rate (Intel MPI benchmarks).
– 10-Gigabit Ethernet mode, or under MX-10G ethernet emulation: 9.6 Gbits/s TCP/IP rate (Netperf benchmarks with Linux 2.6.9, jumbo frames, default offload parameters).