公开(公告)号：US20200065247A1

公开(公告)日：2020-02-27

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.