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System for distributing a plurality of threads associated with a process initiating by one data processing station among data processing stations
| Details |
Inventors: Ryan, Jeffrey M.; Brobst, Curtis H.; Chou, Chih-Hsiang;
Assignee: International Business Machines Corporation (Armonk, NY)
Primary Examiner: Meky; Moustafa M.
Assistant Examiner:
Attorney, Agent or Firm: Musgrove; Jack V., Dillon; Andrew J.
A computer network provides distribution of a multithread process among different data processing stations in the network. In one embodiment, a global name server is used to distribute the threads and update values associated with the threads. When the process is created, the global name server establishes a distributed process context by dividing logical addresses used by the process among physical addresses corresponding to respective portions of the system memory devices (RAM) in different data processing stations. The global name server assigns a universally unique identification number (UUID) to each process, and uses the UUID to manage the distributed threads. When the data in the distributed process context is updated, the changes are apparent to all threads executing in the distributed process. This approach simplifies access and retrieval of shared process context information, and may be implemented using current thread models, making it easier to incorporate into existing networks. |
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DETAILED DESCRIPTION We claim: 1.
A computer network comprising: a communications medium; a plurality of data processing stations each having one or more processors, a communication device connected to said communications medium, and a system memory device; and means for distributing a plurality of threads associated with a process initiated by one of said data processing stations among at least two of said data processing stations, said distributing means including a global name server for distributing said threads among said data processing stations, for updating values associated with said threads, and for assigning a unique identification number to said process, wherein subsequent threads in the process are managed by the global name server using the unique identification number.
2.
The computer network of claim 1 wherein said distributing means includes means for establishing a distributed process context associated with said threads.
3.
The computer network of claim 2 wherein each data processing station which executes one of said threads has a dedicated portion of its memory device forming part of the distributed process context.
4.
The computer network of claim 2 wherein said distributing means includes interface means allowing said at least two data processing stations executing said threads to read and write data to and from said distributed process context.
5.
The computer network of claim 4 wherein said distributing means further includes means for loading data from said distributed process context line-fashion into a local cache of a requesting one of said data processing stations when said requesting data processing station initially executes a read operation.
6.
The computer network of claim 4 wherein said distributing means further includes means for confirming that a particular one of said data processing stations is authorized to access said distributed process context.
7.
The computer network of claim 4 wherein said distributing means further includes means for establishing a write-invaidate caching policy for said distributed process context
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Databases 
