发明授权
- 专利标题： Predictive power gating with optional guard mechanism
- 专利标题（中）： 具有可选保护机构的预测电源门控
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申请号： US12539978申请日： 2009-08-12
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公开(公告)号： US08219834B2公开(公告)日： 2012-07-10
- 发明人: Jayanta Basak , Pradip Bose , Alper Buyuktosunoglu , Anita Lungu
- 申请人： Jayanta Basak , Pradip Bose , Alper Buyuktosunoglu , Anita Lungu
- 申请人地址： US NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： US NY Armonk
- 代理商 Francis Lammes; Stephen J. Walder, Jr.; William Stock
- 主分类号： G06F1/00
- IPC分类号： G06F1/00 ; G06F1/26 ; G06F1/32
摘要：
A mechanism is provided for predictively power gating a set of units within the data processing system. A second-level power gating controller monitors a set of events for each unit in a set of units within the data processing system. The second-level power gating controller identifies idle sequences of a predetermined set of cycles within the events from each unit where the unit is idle. The second-level power gating controller determines preceding sequences of a predetermined length that precede the idle sequences. The second-level power gating controller determines an accuracy of the preceding sequences. Responsive to the accuracy being above a threshold, the second-level power gating controller sends a permit command to a first-level power gating mechanism associated with the unit to permit power gating of the unit.
公开/授权文献
- US20110040995A1 Predictive Power Gating with Optional Guard Mechanism 公开/授权日：2011-02-17
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