James D. Meindl

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A model describing the maximum clock frequency (FMAX) distribution of a microprocessor is derived and compared with wafer sort data for a recent 0.25m microprocessor. The model agrees closely with measured data in mean, variance, and shape. Results demonstrate that within-die fluctuations primarily impact the FMAX mean and die-to-die fluctuations determine(More)
Based on Rent’s Rule, a well-established empirical relationship, a rigorous derivation of a complete wire-length distribution for on-chip random logic networks is performed. This distribution is compared to actual wire-length distributions for modern microprocessors, and a methodology to calculate the wire-length distribution for future gigascale(More)
Based on physical models, circuit models are presented for SWNTs, SWNT-bundles and MWNTs. These models can be used for circuit simulations and compact modeling. It is demonstrated that by customizing CNT interconnects at the local, semiglobal and global levels several major challenges facing GSI systems can potentially be addressed. For local interconnects,(More)
The era of low power microelectronics began with the invention of the transistor in the late 1940’s and came of age with the invention of the integrated circuit in the late 1950’s. Historically, the most demanding applications of low power microelectronics have been battery operated products such as wrist watches, hearing aids, implantable cardiac(More)
Twenty-first century opportunities for GSI will be governed in part by a hierarchy of physical limits on interconnects whose levels are codified as fundamental, material, device, circuit, and system. Fundamental limits are derived from the basic axioms of electromagnetic, communication, and thermodynamic theories, which immutably restrict interconnect(More)
A new compact physics-based Alpha-Power Law MOSFET Model is introduced to enable projections of low power circuit performance for future generations of technology by linking the simple mathematical expressions of the original Alpha-Power Law Model with their physical origins. The new model, verified by HSPICE simulations and measured data, includes: 1) a(More)
Physical models are used to determine the ultimate potential performance of carbon nanotube interconnects and compare them with minimum-size copper wires implemented at various technology generations. Results offer important guidance regarding the nature of carbon nanotube technology development needed for improving interconnect performance. Since wave(More)
ÐSingle-chip multiprocessors are an important research direction for future microprocessors. The stigma of this approach is that many important applications cannot be automatically parallelized. This paper presents a single-chip multiprocessor that engages aggressive speculation techniques to enable dynamic parallelization of irregular, sequential binaries.(More)