Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2006-10-18
2010-12-07
Guyton, Philip (Department: 2113)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S003000, C709S248000
Reexamination Certificate
active
07849369
ABSTRACT:
The updating of only some memory locations in a multiple computer environment in which at least one applications program (50) executes simultaneously on a plurality of computers M1, M2. . . Mn each of which has a local memory, is disclosed. Memory locations (A, B, D, E, X) in said local memory are categorized into two groups. The first group of memory locations (X1, X2, . . . Xn, A1, A2, . . . An) are each present in other computers. The second group of memory locations (B, E) are each present only in the computer having the local memory including the memory location. Changes to the contents of memory locations in the first group only are transmitted to all other computers. A computer failure detection mechanism is disclosed to prevent updating of any first group memory locations of any failed computer.
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Ba
Guyton Philip
Pillsbury Winthrop Shaw & Pittman LLP
Waratek Pty Ltd.
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