Invention Grant
- Patent Title: Location-aware cache-to-cache transfers
- Patent Title (中): 位置感知缓存到缓存传输
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Application No.: US10833197Application Date: 2004-04-27
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Publication No.: US07676637B2Publication Date: 2010-03-09
- Inventor: Xiaowei Shen , Jaehyuk Huh , Balaram Sinharoy
- Applicant: Xiaowei Shen , Jaehyuk Huh , Balaram Sinharoy
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: F. Chau & Associates, LLC
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
In shared-memory multiprocessor systems, cache interventions from different sourcing caches can result in different cache intervention costs. With location-aware cache coherence, when a cache receives a data request, the cache can determine whether sourcing the data from the cache will result in less cache intervention cost than sourcing the data from another cache. The decision can be made based on appropriate information maintained in the cache or collected from snoop responses from other caches. If the requested data is found in more than one cache, the cache that has or likely has the lowest cache intervention cost is generally responsible for supplying the data. The intervention cost can be measured by performance metrics that include, but are not limited to, communication latency, bandwidth consumption, load balance, and power consumption.
Public/Granted literature
- US20050240735A1 Location-aware cache-to-cache transfers Public/Granted day:2005-10-27
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