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:
Oct. 02, 2012
Filed:
May. 23, 2008
Tong Chen, Yorktown Heights, NY (US);
Haibo Lin, Beijing, CN;
John K. O'brien, South Salem, NY (US);
Tao Zhang, Duluth, GA (US);
Tong Chen, Yorktown Heights, NY (US);
Haibo Lin, Beijing, CN;
John K. O'Brien, South Salem, NY (US);
Tao Zhang, Duluth, GA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Compiler analysis and runtime coherency checking for reducing coherency problems is provided. Source code is analyzed to identify at least one of a plurality of loops that contains a memory reference. A determination is made as to whether the memory reference is an access to a global memory that should be handled by at least one of a software controlled cache or a direct buffer. A determination is made as to whether there is a data dependence between the memory reference and at least one reference from at least one of other direct buffers or other software controlled caches in response to an indication that the memory reference is an access to the global memory that should be handled by either the software controlled cache or the direct buffer. A direct buffer transformation is applied to the memory reference in response to a negative indication of the data dependence.