公开(公告)号：US11550723B2

公开(公告)日：2023-01-10

申请号：US16113185

申请日：2018-08-27

Applicant: QUALCOMM Incorporated

Inventor： Niket Choudhary ,  David Scott Ray ,  Thomas Philip Speier ,  Eric Robinson ,  Harold Wade Cain, III ,  Nikhil Narendradev Sharma ,  Joseph Gerald McDonald ,  Brian Michael Stempel ,  Garrett Michael Drapala

IPC: G06F12/0862 ,  G06F12/0811

Abstract: An apparatus, method, and system for memory bandwidth aware data prefetching is presented. The method may comprise monitoring a number of request responses received in an interval at a current prefetch request generation rate, comparing the number of request responses received in the interval to at least a first threshold, and adjusting the current prefetch request generation rate to an updated prefetch request generation rate by selecting the updated prefetch request generation rate from a plurality of prefetch request generation rates, based on the comparison. The request responses may be NACK or RETRY responses. The method may further comprise either retaining a current prefetch request generation rate or selecting a maximum prefetch request generation rate as the updated prefetch request generation rate in response to an indication that prefetching is accurate.