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:
Jun. 18, 2013
Filed:
Sep. 03, 2009
Alexandre E. Eichenberger, Chappaqua, NY (US);
John K. P. O'brien, South Salem, NY (US);
Kathryn M. O'brien, South Salem, NY (US);
Lakshminarayanan Renganarayana, Elmsford, NY (US);
Xiaotong Zhuang, Yorktown Heights, NY (US);
Alexandre E. Eichenberger, Chappaqua, NY (US);
John K. P. O'Brien, South Salem, NY (US);
Kathryn M. O'Brien, South Salem, NY (US);
Lakshminarayanan Renganarayana, Elmsford, NY (US);
Xiaotong Zhuang, Yorktown Heights, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Mechanisms are provided for tracking dependencies of threads in a multi-threaded computer program execution. The mechanisms detect a dependency of a first thread's execution on results of a second thread's execution in an execution flow of the multi-threaded computer program. The mechanisms further store, in a hardware thread dependency vector storage associated with the first thread's execution, an identifier of the dependency by setting at least one bit in the hardware thread dependency vector storage corresponding to the second thread. Moreover, the mechanisms schedule tasks performed by the multi-threaded computer program based on the hardware thread dependency vector storage to minimize squashing of threads.