Instruction and logic for prefetcher throttling based on counts of memory accesses to data sources

Instruction and logic for prefetcher throttling based on counts of memory accesses to data sources

A processor includes a core, a prefetcher, and a prefetcher control module. The prefetcher includes logic to make speculative prefetch requests through a memory subsystem for an element for execution by the core, and logic to store prefetched elements in a cache. The prefetcher control module includ...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Jagannathan Ashok, Sodani Avinash, Vinod Krishna N, Jain Prabhat
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:A processor includes a core, a prefetcher, and a prefetcher control module. The prefetcher includes logic to make speculative prefetch requests through a memory subsystem for an element for execution by the core, and logic to store prefetched elements in a cache. The prefetcher control module includes logic to determine counts of memory accesses to two types of memory and, based upon the counts and the type of memory, reduce the speculative prefetch requests of the prefetcher.