| 摘要 |
<p>PURPOSE: To provide a fault tolerant computer system that significantly reduces the suspension period of system operation, and its resynchronization method. CONSTITUTION: The fault tolerant computer system is a lock-step type system having a plurality of computing modules 100, 200 each having processors and memories, with the computing modules processing the same instruction sequence in clock synchronization. When a mismatch in the state of access to an external bus is detected between the processors within each of the computing modules 100, 200 and no fault of the entire system including the computing modules 100, 200 is detected, interrupts are generated to all the processors, and after delay adjustments are made to establish a match between the computing modules in the state of instruction execution, the process of resuming the operation of the computing modules in clock synchronization is performed.</p> |
