Method and cache memory controller for fetching data for a CPU that further reduces CPU idle time

Method and cache memory controller for fetching data for a CPU that further reduces CPU idle time

A method and cache memory controller for fetching data for a CPU that further reduces CPU idle time is disclosed. The method and cache memory controller causes the data word being fetched by the CPU to be retrieved from the cache-main memory hierarchy and returned to the CPU, even if a cache memory...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: RAMAN, RENUKANTHAN, MITRA, SAMIR, PETOLINO, JOSEPH
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:A method and cache memory controller for fetching data for a CPU that further reduces CPU idle time is disclosed. The method and cache memory controller causes the data word being fetched by the CPU to be retrieved from the cache-main memory hierarchy and returned to the CPU, even if a cache memory fill initiated due to a prior cache miss is still in progress, if the data word is stored in a memory location corresponding to a memory block offset of the memory block frame being mapped. As a result, CPU idle time due to cache read misses is further reduced.