Fault tolerant multiprocessor computer system

Details Fault tolerant multiprocessor computer system Fault tolerant multiprocessor computer system

1991-05-31

1997-07-15

Beausoliel, Jr., Robert W.

39518507, G06F 1100

Patent

active

056490909

ABSTRACT:
A fault tolerant computer system includes at least two central processing units each having a cache memory and a parity error detector adapted to sense parity errors in blocks of information read from and write to cache and to issue a cache parity read or write error flag if a parity error is sensed. A system bus couples the CPU to a System Control Unit having a parity error correction facility, and a memory bus couples the SCU to a main memory. An error recovery control feature distributed across the CPU, including a Service Processor and the operating system software, is responsive to the sensing of a read parity error flag in a sending CPU and a write parity error flag in a receiving CPU in conjunction with a siphon operation for transferring the faulting block from the sending CPU to main memory via the SCU (in which given faulting block is corrected) and for subsequently transferring the corrected memory block from main memory to the receiving CPU when a retry is instituted.

REFERENCES:
patent: 4084236 (1978-04-01), Chelberg et al.
patent: 4245307 (1981-01-01), Kapeahian et al.
patent: 4464747 (1984-08-01), Groudon et al.
patent: 4920479 (1990-04-01), Hashiguchi
patent: 4953164 (1990-08-01), Asakura et al.
patent: 4975838 (1990-12-01), Mizuno et al.
patent: 5195101 (1993-03-01), Guenthner et al.
patent: 5212784 (1993-05-01), Sparks
patent: 5271020 (1993-12-01), Marisetty

Affiliated with

Also associated with

Rating

Fault tolerant multiprocessor computer system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fault tolerant multiprocessor computer system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fault tolerant multiprocessor computer system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1498534