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:
Feb. 05, 2013
Filed:
Aug. 08, 2007
Method for synchronizing independent cooperative thread arrays running on a graphics processing unit
Scott M. Le Grand, Soquel, CA (US);
Scott M. Le Grand, Soquel, CA (US);
NVIDIA Corporation, Santa Clara, CA (US);
Abstract
One embodiment of the present invention sets forth a technique for synchronizing the execution of multiple cooperative thread arrays (CTAs) implementing a parallel algorithm that is mapped onto a graphics processing unit. An array of semaphores provides synchronization status to each CTA, while one designated thread within each CTA provides updated status for the CTA. The designated thread within each participating CTA reports completion of a given computational phase by updating a current semaphore within the array of semaphores. The designated thread then polls the status of the current semaphore until all participating CTAs have reported completion of the current computational phase. After each CTA has completed the current computational phase, all participating CTAs may proceed to the next computational phase.