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:
Jul. 05, 2016
Filed:
Apr. 12, 2013
International Business Machines Corporation, Armonk, NY (US);
John S Dodson, Austin, TX (US);
Miles R. Dooley, Austin, TX (US);
Benjiman L. Goodman, Cedar Park, TX (US);
Jody B. Joyner, Austin, TX (US);
Stephen J. Powell, Austin, TX (US);
Eric E. Retter, Austin, TX (US);
Jeffrey A. Stuecheli, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A prefetch stream is established in a prefetch unit of a memory controller for a system memory at a lowest level of a volatile memory hierarchy of the data processing system based on a memory access request received from a processor core. The memory controller receives an indication of an upcoming high latency event affecting access to the system memory. In response to the indication, the memory controller temporarily increases a prefetch depth of the prefetch stream with respect to the system memory and issues, to the system memory, a plurality of prefetch requests in accordance with the temporarily increased prefetch depth in advance of the upcoming high latency event.