Arithmetic processing device and arithmetic processing method
AssigneeFujitsu Limited
InventorsMasakazu Tanomoto, Hideki Okawara
Life of this patent
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Abstract
An arithmetic processing device includes circuitry configured to add an identifier of a request source that generates a prefetch request into the prefetch request, and output, in response to detecting a certain number of cache hits less than a first threshold, each of the cache hits occurring in a first cache memory provided at a lower hierarchical level than a second cache memory by each prefetch request into which a first identifier is added, a notification for suppressing a prefetch request issued for the lower hierarchical level of the first cache memory from a first request source identified by the first identifier.
Claims14
An arithmetic processing device comprising:
- circuitry configured to
- add an identifier of a request source that generates a prefetch request into the prefetch request, and
- output, in response to detecting a certain number of cache hits less than a first threshold, each of the cache hits occurring in a first cache memory provided at a lower hierarchical level than a second cache memory by each prefetch request into which a first identifier is added, a notification for suppressing a prefetch request issued for the lower hierarchical level of the first cache memory from a first request source identified by the first identifier.
An arithmetic processing method comprising:
- adding an identifier of a request source that generates a prefetch request into the prefetch request;
- and
- outputting, in response to detecting a certain number of cache hits less than a first threshold, each of the cache hits occurring in a first cache memory provided at a lower hierarchical level than a second cache memory by each prefetch request into which a first identifier is added, a notification for suppressing a prefetch request issued for the lower hierarchical level of the first cache memory from a first request source identified by the first identifier.
Dependencies are inferred from the claim text.