Author:
Vantrease Dana,Schreiber Robert,Monchiero Matteo,McLaren Moray,Jouppi Norman P.,Fiorentino Marco,Davis Al,Binkert Nathan,Beausoleil Raymond G.,Ahn Jung Ho
Abstract
We expect that many-core microprocessors will push performance per chip from the 10 gigaflop to the 10 teraflop range in the coming decade. To support this increased performance, memory and inter-core bandwidths will also have to scale by orders of magnitude. Pin limitations, the energy cost of electrical signaling, and the non-scalability of chip-length global wires are significant bandwidth impediments. Recent developments in silicon nanophotonic technology have the potential to meet these off- and on-stack bandwidth requirements at acceptable power levels. Corona is a 3D many-core architecture that uses nanophotonic communication for both inter-core communication and off-stack communication to memory or I/O devices. Its peak floating-point performance is 10 teraflops. Dense wavelength division multiplexed optically connected memory modules provide 10 terabyte per second memory bandwidth. A photonic crossbar fully interconnects its 256 low-power multithreaded cores at 20 terabyte per second bandwidth. We have simulated a 1024 thread Corona system running synthetic benchmarks and scaled versions of the SPLASH-2 benchmark suite. We believe that in comparison with an electrically-connected many-core alternative that uses the same on-stack interconnect power, Corona can provide 2 to 6 times more performance on many memory intensive workloads, while simultaneously reducing power.
Publisher
Association for Computing Machinery (ACM)
Reference33 articles.
1. ANSI/IEEE. Local Area Networks: Token Ring Access Method and Physical Layer Specifications Std 802.5. Technical report 1989. ANSI/IEEE. Local Area Networks: Token Ring Access Method and Physical Layer Specifications Std 802.5. Technical report 1989.
2. The M5 Simulator: Modeling Networked Systems
3. CMP network-on-chip overlaid with multi-band RF-interconnect
Cited by
61 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献