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SCHEDULE: NOV 15-20, 2015
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Automatic Sharing Classification and Timely Push for Cache-Coherent Systems
SESSION: Cache and Memory Subsystems
EVENT TYPE: Papers
EVENT TAG(S): Architectures
TIME: 11:30AM - 12:00PM
SESSION CHAIR(S): Sunita Chandrasekaran
AUTHOR(S):Malek Musleh, Vijay S. Pai
ROOM:19AB
ABSTRACT:
This paper proposes and evaluates Sharing/Timing Adaptive Push (STAP), a dynamic scheme for preemptively sending data from producers to consumers to minimize critical-path communication latency. STAP uses small hardware buffers to dynamically detect sharing patterns and timing requirements. The scheme applies to both intra-node and inter-socket directory-based shared memory networks. We integrate STAP into a MOESI cache-coherence (prefetching-enabled) protocol using heuristics to detect different data sharing patterns, including broadcasts, producer/consumer, and migratory-data sharing. Using 15 benchmarks from the PARSEC and SPLASH-2 suites we show that our scheme significantly reduces communication
latency in NUMA systems and achieves an average of 9% performance improvement, with at most 3% on-chip storage overhead.
Chair/Author Details:
Sunita Chandrasekaran (Chair) - University of Delaware|
Malek Musleh - Purdue University
Vijay S. Pai - Purdue University
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