Topics
1994 ARPA essays
- Needed: Digital Assistants that See and Hear
- The Time has come for Style and Fashion in Electronics
- Advanced Displays: Windows into Information Warfare
- Electronics Evolution: Diversity Revisited
- Today's Technology Begets Tomorrow's Military Readiness
Semiconductor design and manufacturing
Research papers of note
- Multi-port RAM
- Magnetic Flux-Controlled Gate Voltage in Superconducting Field-Effect Transistors
- Modelocking with GaAlAs and GaInAsP semiconductor laser diodes.
- Magnetic power and comm interface to a CMOS chip
- Frequency limitations in circuits composed of linear devices and The stability and passivity of MOSFET device models that use nonreciprocal capacitive elements
- Continuous Models for Communication Density Constraints on Multiprocessor Performance
Continuous models for communication density constraints on multiprocessor performance
Lance A. Glasser and Charles A. Zukowski
© Lance A. Glasser 2007-2010
All Rights Reserved
Fundamental limits on the communication capabilities of massively parallel multiprocessors are investigated. It is shown that in the limit of machines of infinite extent in which the number of processors per unit volume is constant and in which the communication bandwidth from each processor to its neighbors depends only on their separation distance, interprocessor communication must fall off faster than the fourth power of distance. For machines of finite size, communication energy density is used as a metric to compare various machine sizes and packaging densities. For instance, for machines with spherical symmetry and uniform communication requirements, the peak density depends on the number of processors to the 4/3 power and the number of processors per unit volume to the 2/3 power.
Key works: Communication limits, information density, massive parallelism, multiprocessors.
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