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:
Nov. 29, 2016
Filed:
Jan. 18, 2011
Matthias A. Blumrich, Ridgefield, CT (US);
Luis H. Ceze, Urbana, IL (US);
Dong Chen, Croton on Hudson, NY (US);
Alan Gara, Mount Kisco, NY (US);
Phlip Heidelberger, Cortlandt Manor, NY (US);
Martin Ohmacht, Yorktown Heights, NY (US);
Burkhard Steinmacher-burow, Baden-Wierttemberg, DE;
Xiaotong Zhuang, White Plains, NY (US);
Matthias A. Blumrich, Ridgefield, CT (US);
Luis H. Ceze, Urbana, IL (US);
Dong Chen, Croton on Hudson, NY (US);
Alan Gara, Mount Kisco, NY (US);
Phlip Heidelberger, Cortlandt Manor, NY (US);
Martin Ohmacht, Yorktown Heights, NY (US);
Burkhard Steinmacher-Burow, Baden-Wierttemberg, DE;
Xiaotong Zhuang, White Plains, NY (US);
GLOBALFOUNDRIES INC., Grand Cayman, KY;
Abstract
In a multiprocessor system, a conflict checking mechanism is implemented in the L2 cache memory. Different versions of speculative writes are maintained in different ways of the cache. A record of speculative writes is maintained in the cache directory. Conflict checking occurs as part of directory lookup. Speculative versions that do not conflict are aggregated into an aggregated version in a different way of the cache. Speculative memory access requests do not go to main memory.