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Trends in VLSI technology scaling demand that future computing devices be narrowly focused to achieve high performance and high efficiency, yet also target the high volumes and low costs of widely applicable general purpose designs. To address these conflicting requirements, we propose a modular reconfigurable architecture called Smart Memories, targeted at(More)
Scaling trends of logic, memories, and interconnect networks lead towards dense many-core chips. Unfortunately, process yields and reticle sizes limit the scalability of large single-chip systems. Multi-chip systems break free of these areal limits, but in turn require enormous chip-to-chip bandwidth. The "macrochip" concept presented here integrates(More)
  • Ashok V Krishnamoorthy, Ron Ho, Xuezhe Zheng, Herb Schwetman, Jon Lexau, Pranay Koka +12 others
  • 2009
A proposed supercomputer-on-a-chip with optical interconnections between processing elements will require development of new lower-energy optical components and new circuit architectures that match electrical datapaths to complementary optical interfaces. ABSTRACT | We present a computing microsystem that uniquely leverages the bandwidth, density, and(More)
We demonstrate a monolithic photonic integration platform that leverages the existing state-of-the-art CMOS foundry infrastructure. In our approach, proven XeF 2 post-processing technology and compliance with electronic foundry process flows eliminate the need for specialized substrates or wafer bonding. This approach enables intimate integration of large(More)
This paper presents photonic devices with 3 dB/cm waveguide loss fabricated in an existing commercial electronic 45 nm SOI-CMOS foundry process. By utilizing existing front-end fabrication processes the photonic devices are monolithically integrated with electronics in the same physical device layer as transistors achieving 4 ps logic stage delay, without(More)
We demonstrate here a spatially non-blocking optical 4x4 router with a footprint of 0.07 mm 2 for use in future integrated photonic interconnection networks. The device is dynamically switched using thermo-optically tuned silicon microring resonators with a wavelength shift to power ratio of 0.25nm/mW. The design can route four optical inputs to four(More)
Hyperthreaded(HT) and simultaneous multi-threaded (SMT) processors are now available in commodity workstations and servers. This technology is designed to increase throughput by executing multiple concurrent threads on a single physical processor. These multiple threads share the processor's functional units and on-chip memory hierarchy in an attempt to(More)