BL∪E: A Timely, IP-based Data Prefetcher

Ros, Alberto

Publication:
BL∪E: A Timely, IP-based Data Prefetcher

dc.contributor.author	Ros, Alberto
dc.contributor.department	Ingeniería y Tecnología de Computadores
dc.date.accessioned	2021-12-02T19:55:57Z
dc.date.available	2021-12-02T19:55:57Z
dc.date.issued	2021-06
dc.description.abstract	High-performance prefetchers require not only predicting the future cache lines that will be requested but also when they will be requested. Timeliness is therefore an essential property for getting the maximum performance from a prefetcher. Bringing the cache line too early to cache can decrease the coverage of the prefetcher when such cache line is evicted before is requested. On the other hand, prefetching the data too late can lead to late prefetchers, and thus, sub-optimal performance. This paper presents BL∪E, a data prefetcher that predicts the prefetched cache lines based on timeliness. The prefetcher accounts for the time required to fetch a cache line and issues the prefetch request early enough, such that when it is accessed it will already be stored in cache. For each instruction pointer (or group of them) BL∪E i) correlates in a timely way the cache lines that have been requested and ii) infers their timely delta when the cache lines have not been accessed yet.	es
dc.format	application/pdf	es
dc.format.extent	4	es
dc.identifier.uri	https://drive.google.com/file/d/1lKWpaRGaW8nKRBDs8X1y-4AiMWLUAGWO/view
dc.identifier.uri	http://hdl.handle.net/10201/114664
dc.language	eng	es
dc.relation	European Research Council (ERC) under the European Union s Horizon 2020 research and innovation programme (ECHO: Extending Coherence for Hardware-Driven Optimizations in Multicore Architectures, grant agreement No 819134, Consolidator Grant, 2018).	es
dc.relation.ispartof	The 1st ML-Based Data Prefetching Competition. ML for Computer Architecture and Systems	es
dc.rights	info:eu-repo/semantics/openAccess	es
dc.rights	Atribución 4.0 Internacional	*
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/	*
dc.subject	Data prefetcher	es
dc.subject	Last level cache	es
dc.subject	Timely	es
dc.title	BL∪E: A Timely, IP-based Data Prefetcher	es
dc.type	info:eu-repo/semantics/article	es
dspace.entity.type	Publication	es