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Wei Chen 0168

dblp:181/2832-168 · DBLP profile ↗
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1ranked-venue papers
0as first author
1since 2021 · last 2024
0009-0005-9804-5614ORCID · verified

Domains — the database's venue-derived domains; a paper can count in several

Systems, architecture and hardware · 1 · 1 since 2021

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer architecture, parallel and distributed computing, and storage systems
1 paper
Memory systems · 87% Performance modeling and evaluation · 13%

Topics — the 3 heaviest of 3, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Memory systems › cache › CPU cache
l1 data cache
0.812024
Hyperion: A Highly Effective Page and PC Based Delta Prefetcher · ACM Trans. Archit. Code Optim. 2024
Memory systems › cache
prefetching
0.812024
Hyperion: A Highly Effective Page and PC Based Delta Prefetcher · ACM Trans. Archit. Code Optim. 2024
Performance modeling and evaluation
benchmarking
0.212024
Hyperion: A Highly Effective Page and PC Based Delta Prefetcher · ACM Trans. Archit. Code Optim. 2024

Methods — techniques the papers use, named apart from their topics

dynamic issuing mechanism · 0.8access history recording · 0.8
YearPublicationVenuePosition
2024 Hyperion: A Highly Effective Page and PC Based Delta Prefetcher
abstract
Hardware prefetching plays an important role in modern processors for hiding memory access latency. Delta prefetchers show great potential at the L1D cache level, as they can impose small storage overhead by recording deltas. Furthermore, local delta prefetchers, such as Berti, have been shown to achieve high L1D accuracy. However, there is still room for improving the L1D coverage of existing delta prefetchers. Our goal is to develop a delta prefetcher capable of achieving both high L1D coverage and accuracy. We explore delta prefetchers trained on various types of contextual information, ranging from coarse-grained to fine-grained, and analyze their L1D coverage and accuracy. Our findings indicate that training deltas based on the access histories of both PCs and memory pages for individual PCs and memory pages can lead to increased L1D coverage alongside high accuracy. Therefore, we introduce Hyperion, a highly efficient Page and PC-based delta prefetcher. In terms of the vital component of recording access histories, we implement three different structures and engage in a detailed discussion about them. Furthermore, Hyperion utilizes micro-architecture information (e.g., L1D hits or misses, PQ occupancy) and real-time L1D accuracy to dynamically adjust its issuing mechanism, further enhancing performance and L1D accuracy. Our results show that Hyperion achieves an L1D accuracy of 92.4% and an L1D coverage of 51.9%, along with an L2C coverage of 63.0% and an LLC coverage of 67.5% across a diverse range of applications, including SPEC CPU2006, SPEC CPU2017, GAP, and PARSEC, with a baseline of no prefetching. Regarding performance, Hyperion achieves a 50.1% performance gain, outperforming the state-of-the-art delta prefetcher Berti by 5.0% over baseline across all memory-intensive traces from the four benchmark suites.
Wei Chen 0168, Xu Cheng 0001, Jiangfang Yi
ACM Trans. Archit. Code Optim.2