Patent ID: 6711693
Filing Date: 2004-03-23
Classification: G06F

Abstract:
A method of maintaining current time in a multiprocessor computer system, comprising:partitioning a plurality of processors of said multiprocessor computer system into a plurality of partitions, and using a microprocessor in each partition of said plurality of partitions as a â€œmultiprocessor backplane managerâ€  (MBM), and using each said MBM to manage a particular partition of said plurality of partitions in which said MBM is located; including a time of year clock with each MBM to provide a plurality of time of year clocks; synchronizing said plurality of time of year clocks to determine a â€œbase timeâ€ , said base time maintained by each MBM of each partition; computing a partition delta time as a time difference between a time set in a partition said base time; and reading said current time by a processor of said partition, said current time computed as said base time plus said partition delta time.