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:
Mar. 03, 2009
Filed:
Nov. 17, 2005
Bruce Leroy Beukema, Hayfield, MN (US);
Michael Bar-joshua, Haifa, IL;
Alexander Mesh, Haifa, IL;
Shaul Yifrach, Haifa, IL;
Bruce Leroy Beukema, Hayfield, MN (US);
Michael Bar-Joshua, Haifa, IL;
Alexander Mesh, Haifa, IL;
Shaul Yifrach, Haifa, IL;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A circuit arrangement and method selectively reorder speculatively issued memory read requests being communicated to a lower memory level in a multi-level memory architecture. In particular, a memory read request that has been speculatively issued to a lower memory level prior to completion of a cache lookup operation initiated in a cache memory in a higher memory level may be reordered ahead of at least one previously received and pending request awaiting communication to the lower memory level. By doing so, the latency associated with the memory read request is reduced when the request results in a cache miss in the higher level memory, and as a result, system performance is improved.