Spatio-temporal memory streaming

Recent research advocates memory streaming techniques to alleviate the performance bottleneck caused by the high latencies of off-chip memory accesses. Temporal memory streaming replays previously observed miss sequences to eliminate long chains of dependent misses. Spatial memory streaming predicts repetitive data layout patterns within fixed-size memory regions. Because each technique targets a different subset of misses, their effectiveness varies across workloads and each leaves a significant fraction of misses unpredicted. In this paper, we propose Spatio-Temporal Memory Streaming (STeMS) to exploit the synergy between spatial and temporal streaming. We observe that the order of spatial accesses repeats both within and across regions. STeMS records and replays the temporal sequence of region accesses and uses spatial relationships within each region to dynamically reconstruct a predicted total miss order. Using trace-driven and cycle-accurate simulation across a suite of commerci...

• Type: Conference
• Year: 2009
• Where: ISCA
• Authors: Stephen Somogyi, Thomas F. Wenisch, Anastasia Ailamaki, Babak Falsafi
• Keywords: Hardware, ISCA 2009, Spatial, Temporal Memory, Temporal Streaming