Operating system for a non-uniform memory access multiprocessor system
US6105053A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1995 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Jun 23, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/5016
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An operating system for a non-uniform memory access (NUMA) multiprocessor system that utilizes a software abstraction of the NUMA system hardware representing a hierarchical tree structure to maintain the most efficient level of affinity and to maintain balanced processor and memory loads. 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 medium term scheduler for monitoring the progress of active thread groups distributed throughout the system and for assisting languishing 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. The operating system further includes a memory manager for allocating virtual and physical memory using a plurality of memory pools and frame treasuries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.