Title
GBDI: Going Beyond Base-Delta-Immediate Compression with Global Bases
Abstract
Memory bandwidth is limiting performance for many emerging applications. While compression techniques can unlock a higher memory bandwidth, prior art offers only modestly better bandwidth. This paper contributes with a new compression method – Global Base Delta Immediate compression (GBDI) – that offers substantially higher memory bandwidth by, unlike prior art, selecting base values across memory blocks. GBDI uses a novel clustering algorithm through data analysis in the background. The presented accelerator infrastructure offers low area overhead and latency. This paper shows that GBDI offers a compression ratio of 2.3×, and yields 1.5× higher bandwidth and 1.1× higher performance compared with a baseline without compression support, on average, for SPEC2017 benchmarks requiring medium to high memory bandwidth.
Year
DOI
Venue
2022
10.1109/HPCA53966.2022.00085
2022 IEEE International Symposium on High-Performance Computer Architecture (HPCA)
Keywords
DocType
ISSN
GBDI,compression techniques,compression method,substantially higher memory bandwidth,base values,memory blocks,compression ratio,compression support,high memory bandwidth,global base delta immediate compression,clustering algorithm,data analysis
Conference
1530-0897
ISBN
Citations 
PageRank 
978-1-6654-2028-0
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Alexandra Angerd100.34
Angelos Arelakis200.34
Vasilis Spiliopoulos300.34
Erik Sintorn400.34
Per Stenström53048234.09