B. Roe Hemenway

Learn More
We address the problem of how to exploit optics for ultrascale High Performance Computing interconnect fabrics. We show that for high port counts these fabrics require multistage topologies regardless of whether electronic or optical switch components are used. Also, per stage electronic buffers remain indispensable for maintaining throughput, lossless-ness(More)
The OSMOSIS project explores the role of optics in large-scale interconnection networks for highperformance computing (HPC) systems. Its main objectives are solving the technical challenges to meet the stringent HPC requirements of high bandwidth, low latency, low error rates, and cost-effective scalability. We discuss the technologies and architectural(More)
A crucial part of any high-performance computing system is its interconnection network. In the OSMOSIS project, Corning and IBM are jointly developing a demonstrator interconnect based on optical cell switching with electronic control. Starting from the core set of requirements, we present the system design rationale and show how it impacts the practical(More)
We propose a most economical design of the Optical Shared MemOry Supercomputer Interconnect System (OSMOSIS) all-optical, wavelength-space crossbar switch fabric. It is shown, by analysis and simulation, that the total number of on-off gates required for the proposed N × N switch fabric can scale asymptotically as N ln N if the number of input/output ports(More)
There are several network services provided by the 20 channel (50 GHz spaced) all-optical network (AON) testbed deployed in the Boston metropolitan area. In this work, we report on a new metropolitan area service with 10 Gbps access rates per channel using tunable transmitters and receivers to support, for instance, SONET OC-192 users. We demonstrate(More)
  • 1