Coarse-Grain Coherence Tracking: RegionScout and Region Coherence Arrays
Cache-coherent shared-memory multiprocessors have wide-ranging applications, from commercial transaction processing and database services to large-scale scientific computing. Coarse-grain coherence tracking (CGCT) is a new technique that extends a conventional coherence mechanism and optimizes coher...
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| Published in | IEEE MICRO Vol. 26; no. 1; pp. 70 - 79 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Los Alamitos
IEEE
01.01.2006
The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
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| Abstract | Cache-coherent shared-memory multiprocessors have wide-ranging applications, from commercial transaction processing and database services to large-scale scientific computing. Coarse-grain coherence tracking (CGCT) is a new technique that extends a conventional coherence mechanism and optimizes coherence enforcement. It monitors the coherence status of large regions of memory and uses that information to avoid unnecessary broadcasts and filter unnecessary cache tag lookups, thus improving system performance and power consumption. This article presents two CGCT implementations, RegionScout and Region Coherence Arrays, and provides simulation results for a broadcast-based multiprocessor system running commercial, scientific, and multiprogrammed workloads |
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| AbstractList | Cache-coherent shared-memory multiprocessors have wide-ranging applications, from commercial transaction processing and database services to large-scale scientific computing. Coarse-grain coherence tracking (CGCT) is a new technique that extends a conventional coherence mechanism and optimizes coherence enforcement. It monitors the coherence status of large regions of memory and uses that information to avoid unnecessary broadcasts and filter unnecessary cache tag lookups, thus improving system performance and power consumption. This article presents two CGCT implementations, RegionScout and Region Coherence Arrays, and provides simulation results for a broadcast-based multiprocessor system running commercial, scientific, and multiprogrammed workloads Coarse-grain coherence tracking is a new technique that extends a conventional coherence mechanism and optimizes coherence enforcement. It monitors the coherence status of large regions of memory and uses that information to avoid unnecessary broadcasts and filter unnecessary cache tag lookups, thus improving system performance and power consumption. [PUBLICATION ABSTRACT] Coarse-grain coherence tracking is a new technique that extends a conventional coherence mechanism and optimizes coherence enforcement. It monitors the coherence status of large regions of memory and uses that information to avoid unnecessary broadcasts and filter unnecessary cache tag lookups, thus improving system performance and power consumption. |
| Author | Lipasti, M.H. Cantin, J.F. Smith, J.E. Falsafi, B. Moshovos, A. |
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| Cites_doi | 10.1109/HPCA.2001.903254 10.1145/582034.582041 10.1109/MICRO.2005.31 10.1109/ISCA.2005.31 10.1109/ISCA.2005.42 |
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| SubjectTerms | Arrays Bandwidth Broadcasting Cache cache tag lookups coarse-grain coherence tracking Coherence Computer memory Delay Energy consumption Hardware Large-scale systems Microprocessors Monitors Multiprocessing systems Multiprocessor Performance evaluation power consumption Power system interconnection region coherence arrays RegionScout System performance Tracking Transaction databases Transaction processing |
| Title | Coarse-Grain Coherence Tracking: RegionScout and Region Coherence Arrays |
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