Probabilistic method for performing memory prefetching

Details Probabilistic method for performing memory prefetching Probabilistic method for performing memory prefetching

2007-11-01

2010-12-21

Thai, Tuan V (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

Reexamination Certificate

active

07856533

ABSTRACT:
A method for preforming memory prefetching is disclosed. A stream length histogram (SLH) is initially generated based on a stream of Read and Write requests intended for a system memory. A determination is then made whether or not to issue a prefetch command after a Read request based on information within the generated SLH. In a determination that a prefetch command should be issued, prefetch command to be sent to the system memory is issued along with other commands.

REFERENCES:
patent: 2005/0091460 (2005-04-01), Rotithor et al.
patent: 2006/0064532 (2006-03-01), Hur
patent: 2007/0005934 (2007-01-01), Rotithor et al.
Ibrahim Hur, Calvin Lin, adaptive history based memory schedulers, Proceedings of the 37th International Symposium on Microarchitecture (Micro-37'04), 2004.
Office Action dated Jun. 29, 2010; U.S. Appl. No. 11/933,457.
Notice of Allowability dated Jul. 21, 2010; U.S. Appl. No. 11/933,457.

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