Octal 8-Port Myrinet-SAN Switch

M2M-OCT-SW8

Octal 8-Port Myrinet-SAN Switch

Front

includes 16 ports,

on the A links

of 16 SAN

connectors,

for connections

to hosts

Back

includes 16 ports

on the A and B

links of 8 SAN

connectors,

for inter-switch

connections

Block Diagram

This rack-mount, Myrinet-SAN switch was designed for large clusters that can employ SAN interconnect. It exhibits "full" bisection bandwidth between 16 hosts, and conserves 16-link bandwidth between the host connections and the inter-switch connections.

The "OCT" switch was designed to support two styles of network topologies.

This one-page figure (pdf (4K)) shows concisely how OCT switches can be interconnected to form quadruple mesh or torus networks.
This "White Paper" (pdf 81K, Postscript 215K, Word 6 220K) gives recipies for implementing full- and high-bisection butterfly-style networks with N = 16, 32, 64, 128.

Here is a one-page diagram of the internal topology, including the switch port numbers (pdf 6K).

Specifications

Myrinet-SAN ports (32): 1.28+1.28 Gb/s data rate on each port.

Cut-through latency: ~100ns per 8-port switch traversed.

Physical characteristics: 1U, 19" rack mount. 17" x 11.5" x 1.72".

Power: IEC input 85-265 VAC, 50-60 Hz, ~25W typical, fan cooled.

Front View

Back View

Closeup view

Last updated: Oct 1998