Abstract

As the world collects more data, the electronics industry is demanding faster and more energy efficient supercomputers, but this is becoming an increasingly challenging goal as Moore's law nears its end. Superconducting electronics, and single flux quantum (SFQ) in particular, is a promising option for future exascale supercomputing. Nevertheless, timing uncertainty-represented by the inaccuracy of gates delays-renders the design of high-frequency clock distribution networks (CDN) to be one of the challenges that is impeding SFQ processors from attaining their full promised potential. As a radical solution to this challenge, the hierarchical chains of homogeneous clover-leaves clocking, (HC)2 LC, was proposed. (HC)2 LC uses an asynchronous CDN to provide the timing of a fully synchronous system, promising superior robustness over the conventional zero-skew clock trees with modest area and performance …

Date

2019

Authors

Ramy N Tadros, Peter A Beerel

Journal

IEEE Transactions on Applied Superconductivity

Volume

30

Issue

1

Pages

1-11

Publisher

IEEE