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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Acacio, M.E. Gonzalez, J. Garcia, J.M. Duato, J. |
| Copyright Year | 2002 |
| Description | Author affiliation: Dpto. Ing. y Tecnologia de Computadores, Murcia Univ., Spain (Acacio, M.E.; Gonzalez, J.; Garcia, J.M.) |
| Abstract | Recent technology improvements allow multiprocessor designers to put some key components inside the processor chip, such as the memory controller, the coherence hardware and the network interface/router. In this work we exploit such integration scale, presenting a novel node architecture aimed at reducing the long L2 miss latencies and the memory overhead of using directories that characterize cc-NUMA machines and limit their scalability. Our proposal replaces the traditional directory with a novel three-level directory architecture and adds a small shared data cache to each of the nodes of a multiprocessor system. Due to their small size, the first-level directory and the shared data cache are integrated into the processor chip in every node. A taxonomy of the L2 misses, according to the actions performed by the directory to satisfy them is also presented. Using execution-driven simulations, we show significant L2 miss latency reductions (more than 60% in some cases). These important improvements translate into reductions of more than 30% in the application execution time in some cases. |
| Sponsorship | IEEE Comput. Soc. Tech. Committee on Parallel Process. IEEE Comput. Soc. Tech. Committee on Comput. Architecture IEEE Comput. Soc. Tech. Committee on Distributed Process. ACM SIGARCH |
| File Size | 327523 |
| File Format | |
| ISBN | 0769515738 |
| DOI | 10.1109/IPDPS.2002.1015554 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2001-04-15 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Delay Scalability Hip Hardware Protocols Computer interfaces Computer networks Network interfaces Taxonomy Process design |
| Content Type | Text |
| Resource Type | Article |
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