The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2019
Filed:
Dec. 19, 2016
International Business Machines Corporation, Armonk, NY (US);
James J. Bonanno, Wappingers Falls, NY (US);
Michael J. Cadigan, Jr., Poughkeepsie, NY (US);
Adam B. Collura, Hopewell Junction, NY (US);
Daniel Lipetz, Linden, NJ (US);
Patrick J. Meaney, Poughkeepsie, NY (US);
Craig R. Walters, Highland, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Scheduling memory accesses in a memory system having a multiple ranks of memory, at most r ranks of which may be powered up concurrently, in which r is less than the number of ranks. If fewer than r ranks are powered up, a subset of requested powered down ranks is powered up, such that at r ranks are powered up, the subset of requested powered down ranks to be powered up including the most frequently accessed requested powered down ranks. Then, if fewer than r ranks are powered up, a subset of unrequested powered down ranks is powered up, such that a total of at most r ranks is powered up concurrently, the subset of unrequested powered down ranks to be powered up including the most frequently accessed unrequested powered down ranks.