Methods and apparatus for generating high-frequency clocks deterministically from a low frequency system reference clock

摘要

A method and apparatus for maintaining clock phase alignment among system modules of a fault-tolerant computing system. In one embodiment, a low-frequency system reference clock signal is distributed to all system modules where it is multiplied to generate higher-frequency local clock signals. All local clock signals are then synchronized to the rising edge of the reference clock signal and the first rising edge in relation to a timing event is also identified.