Device and method for resetting multi-core processor

A technology of a multi-core processor and a reset method, applied in the field of multi-processor cores, can solve problems such as instability, failure to work properly, and occasional reset failures in reset operations, and achieve the effect of preventing wasting time.

Active Publication Date: 2013-02-13
JIANGNAN INST OF COMPUTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the processor core reset failure is not necessarily because the processor core is faulty, but just temporarily unstable and unable to work normally, resulting in occasional reset failure during the reset operation

Method used

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  • Device and method for resetting multi-core processor
  • Device and method for resetting multi-core processor

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Embodiment Construction

[0021] After research, the inventor found that the failure of processor core reset is not necessarily due to the failure of the processor core, but may be caused by the manufacturing process of the processor core or the instability defect caused by the complex logic relationship inside the processor. caused by. That is to say, in the prior art, there may be a misjudgment in directly identifying a processor core that fails a reset as a faulty processor core, which may cause an available processor core to be idle due to accidental failure.

[0022] In view of the above problems, an embodiment of the present invention provides a method for resetting a multi-core processor. figure 1 It is a flowchart of a method for resetting a multi-core processor in an embodiment of the present invention.

[0023] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail...

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Abstract

The invention provides a method for resetting a multi-core processor. The method comprises the following steps of: reading resetting information; resetting a plurality of processor cores according to the resetting information; if not all the processor cores are reset successfully, resetting the processor cores repeatedly for preset times until all the processor cores are reset successfully; and if not all the processor cores are reset successfully, after the cores are reset for preset times, temporarily isolating the processor cores which are reset for preset times and still fail being reset in the processor cores, and resetting the processor cores which are not isolated in the processor cores again. By the method, the wrong fault predication on the processor cores can be avoided, so that the condition that the processor cores are left used due to accidental failure can be avoided.

Description

technical field [0001] The invention relates to multi-processor core technology, in particular to a multi-core processor reset device and reset method. Background technique [0002] A multi-core processor integrates multiple processor cores into the same chip, so that the number of threads or tasks that the entire processor can execute simultaneously is several times that of a single-core processor, thereby improving the parallel performance of the processor. However, there are a series of problems to be solved in the process of parallel management of multiple processor cores inside the multi-core processor. Among them, how to accurately and quickly reset multiple processor cores inside the multi-core processor is one of the problems. [0003] In the prior art, after a reset operation is performed on multiple processor cores, if not all of the multiple processor cores are successfully reset, the processor core that failed to reset is identified as a faulty processor core, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/24
Inventor 刘沙钱宇
Owner JIANGNAN INST OF COMPUTING TECH
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