Invention Grant
- Patent Title: Adaptive data prefetching
- Patent Title (中): 自适应数据预取
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Application No.: US13976325Application Date: 2013-01-03
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Publication No.: US09280474B2Publication Date: 2016-03-08
- Inventor: Demos Pavlou , Pedro Lopez , Mirem Hyuseinova , Fernando Latorre , Steffen Kosinski , Ralf Goettsche , Varun K. Mohandru
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Trop, Pruner & Hu, P.C.
- International Application: PCT/US2013/020050 WO 20130103
- International Announcement: WO2014/107148 WO 20140710
- Main IPC: G06F12/08
- IPC: G06F12/08 ; G06F12/02 ; G06F9/06 ; G06F9/30 ; G06F9/345 ; G06F9/38

Abstract:
A system and method for adaptive data prefetching in a processor enables adaptive modification of parameters associated with a prefetch operation. A stride pattern in successive addresses of a memory operation may be detected, including determining a stride length (L). Prefetching of memory operations may be based on a prefetch address determined from a base memory address, the stride length L, and a prefetch distance (D). A number of prefetch misses may be counted at a miss prefetch count (C). Based on the value of the miss prefetch count C, the prefetch distance D may be modified. As a result of adaptive modification of the prefetch distance D, an improved rate of cache hits may be realized.
Public/Granted literature
- US20150143057A1 ADAPTIVE DATA PREFETCHING Public/Granted day:2015-05-21
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