High radix self-arbitrating switch fabric with multiple arbitration schemes and quality of service
Proceedings of the 49th Annual Design Automation Conference, 2012•dl.acm.org
A scalable architecture to design high radix switch fabric is presented. It uses circuit
techniques to re-use existing input and output data buses and switching logic for fabric
configuration and supporting multiple arbitration policies. In addition, it integrates a 4-level
message-based priority arbitration for quality of service. Fine grain clock gating, tiled fabric
topology and self-regenerating bit-line repeaters enable scaling the router to 8k wires. A
64x64 (128b data) switch fabric fabricated in 45nm SOI CMOS spans 4.06 mm2 and …
techniques to re-use existing input and output data buses and switching logic for fabric
configuration and supporting multiple arbitration policies. In addition, it integrates a 4-level
message-based priority arbitration for quality of service. Fine grain clock gating, tiled fabric
topology and self-regenerating bit-line repeaters enable scaling the router to 8k wires. A
64x64 (128b data) switch fabric fabricated in 45nm SOI CMOS spans 4.06 mm2 and …
A scalable architecture to design high radix switch fabric is presented. It uses circuit techniques to re-use existing input and output data buses and switching logic for fabric configuration and supporting multiple arbitration policies. In addition, it integrates a 4-level message-based priority arbitration for quality of service. Fine grain clock gating, tiled fabric topology and self-regenerating bit-line repeaters enable scaling the router to 8k wires. A 64x64(128b data) switch fabric fabricated in 45nm SOI CMOS spans 4.06mm2 and achieves a throughput of 4.5Tb/s at 3.4Tb/s/W at 1.1V with a peak measured efficiency of 7.4Tb/s/W at 0.6V.