Process for reconfiguring an information processing system upon detection of a component failure
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United States of America Patent
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Sep 7, 2004
Grant Date -
N/A
app pub date -
May 31, 2000
filing date -
Jun 10, 1999
priority date (Note) -
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Abstract
The invention relates to a process for dynamically reconfiguring an information processing system (1), particularly a so-called 'SMP' symmetric multiprocessor system. The process comprises a preliminary step for detecting a failure risk of one of the components of the system (CPU3). Following this detection, the system (1) is placed in a coherent, so-called 'frozen' state in a first step with the aid of programs (J1-J4) executing specific tasks. A second step consists of reconfiguring the system by reallocating/de-allocating all or some of the components (CPU1-CPU4). In a third step, the component (CPU3) that presents a failure risk is isolated. The pending interruptions (4) are processed and the current tasks (6) are executed prior to the 'freeze.' Likewise, the queues of tasks to be executed are purged prior to the 'freeze.' Then, the subsequent tasks and interrupts are inhibited until a final step that consists of releasing the system (1).
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