OPERATING SYSTEM FOR NON-UNIFORM MEMORY ACCESS MULTIPROCESSOR SYSTEM

PROBLEM TO BE SOLVED: To provide an operating system for a non-uniform memory access (NUMA) multiprocessor system, representing a hierarchical tree structure to maintain the most efficient level of affinity and to maintain balanced processor and memory loads. SOLUTION: The hierarchical tree structure includes leaf nodes representing the job processors, a root node representing at least one system resource shared by all the job processors, and a plurality of intermediate level nodes representing resources shared by different combinations of the job processors. The operating system includes a scheduler for monitoring the progress of active thread groups distributed throughout the system and for assisting lingering thread groups, and a plurality of dispatchers each associated with one of the job processors for monitoring the status of the associated job processor and for obtaining thread groups for the associated job processor to execute. COPYRIGHT: (C)2008,JPO&INPIT