Robert Charles Fish

US Patent:

48498777, Jul 18, 1989

Filed:

Dec 22, 1986

Appl. No.:

6/941700

Inventors:

Thomas P. Bishop - Aurora IL
Robert W. Fish - West Chicago IL
James S. Peterson - Aurora IL
Walter E. Tuvell - No. Plainfield NJ

Assignee:

American Telephone and Telegraph Company - New York NY
AT&T Information Systems Inc. - Morristown NJ

International Classification:

G06F 0930

US Classification:

364200

Abstract:

A multiprocessor system automatically responding to a request for executing a new program to establish an extended process that spans a plurality of processors each having resources required for the execution of the new program. Initially, the extended process comprises an user process that is requesting the execution of the new program. Stub processes are created as required to gain access to the object code file of the new program, to allocate a processor to execute the new program, and to initialize the allocated processor for execution for the new program.

US Patent:

48112160, Mar 7, 1989

Filed:

Dec 22, 1986

Appl. No.:

6/941703

Inventors:

Thomas P. Bishop - Aurora IL
Mark H. Davis - Warrenville IL
Robert W. Fish - West Chicago IL
James S. Peterson - Aurora IL
Grover T. Surratt - West Chicago IL

Assignee:

American Telephone and Telegraph Company - New York NY
AT&T Information Systems Inc. - Morristown NJ

International Classification:

G06F 900

US Classification:

364200

Abstract:

In a multiprocessor system (FIG. 1), memory (22) of each adjunct processor (11-12) comprises global memory (42) and local memory (41). All global memory is managed by a process manager (30) of host processor (10). Each processor's local memory is managed by its operating system kernel (31). Local memory comprises uncommitted memory (45) not allocated to any process and committed memory (46) allocated to processes. The process manager assigns processes to processors and satisfies their initial memory requirements through global memory allocations. Each kernel satisfies processes' dynamic memory allocation requests from uncommitted memory, and deallocated to uncommitted memory both memory that is dynamically requested to be deallocated and memory of terminating processes. Each processor's kernel and the process manager cooperate to transfer memory between global memory and uncommitted memory to keep the amount of uncommitted memory within a predetermined range.

US Patent:

58288767, Oct 27, 1998

Filed:

Jul 31, 1996

Appl. No.:

8/690703

Inventors:

Robert W. Fish - West Chicago IL
Lawrence J. Schroeder - Wheaton IL

Assignee:

NCR Corporation - Dayton OH

International Classification:

G06F 1700

US Classification:

395601

Abstract:

An improved file system for managing data storage and retrieval in a clustered UNIX computer system including a plurality of processing nodes and an interconnection network connecting the processing nodes. The improved file system includes a data storage device, such as a disk storage unit, connected via a shared SCSI interconnect with each one of the processing nodes, rather than connected directly with a single processing node. The structure layout for the file system, which is maintained on the data storage device, includes sufficient information to enable all of the processing nodes to access said file system. The layout comprises: superblocks containing offsets to all other file system structures within the file system; a free inode bit map containing a plurality of bits, each bit representing an inode within the file system; a modified inode journal containing a separate inode bit map for each superblock and identifying particular inodes which have been modified by the file system prior to a system failure; a plurality of inodes, each inode being a data structure which contains a definition for each particular file and directory in the file system; a free block bit map containing a bit map wherein each distinct bit represents a logical disk block in the file system; and data blocks containing data representing file contents. The file system interfaces with the computer system's distributed lock manager (DLM) to coordinate file system usage.

US Patent:

50939130, Mar 3, 1992

Filed:

Dec 5, 1988

Appl. No.:

7/279637

Inventors:

Thomas P. Bishop - Aurora IL
Mark H. Davis - Warrenville IL
Robert W. Fish - West Chicago IL
James S. Peterson - Aurora IL
Grover T. Surratt - West Chicago IL

Assignee:

AT&T Laboratories - Murray Hill NJ

International Classification:

G06F 1200
G06F 1516

US Classification:

395650

Abstract:

In a multiprocessor system (FIG. 1) wherein each adjunct processor has its own, non-shared, memory (22) the non-shared memory of each adjunct processor (11-12) comprises global memory (42) and local memory (41). All global memory of all adjunct processors is managed by a single process manager (30) of a system-wide host processor (10). Each processor's local memory is managed by its operating system kernel (31). Local memory comprises uncommitted memory (45) not allocated to any process and committed memory (46) allocated to processes. The process manager assigns processes to processors and satisfies their initial memory requirements through global memory allocations. Each kernel satisfies processes' dynamic memory allocation requests from uncommitted memory, and deallocates to uncommitted memory both memory that is dynamically requested to be deallocated and memory of terminating processes. Each processor's kernel and the process manager cooperate to transfer memory between global memory and uncommitted memory to keep the amount of uncommitted memory within a predetermined range.

US Patent:

50620401, Oct 29, 1991

Filed:

Sep 28, 1989

Appl. No.:

7/415439

Inventors:

Thomas P. Bishop - Aurora IL
Robert W. Fish - West Chicago IL
James S. Peterson - Aurora IL

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

G06F 1516

US Classification:

364200

Abstract:

There is a disclosed a multi-processing arrangement in which processes running on one processor may utilize processes, called stub processes, running on other processors. One problem that occurs with respect to such a system is that signals, which indicate the occurrence of external asynchronous events, must be processed in a specified order if the system is to work properly. Disclosed is a system for insuring the proper processing of such signals by requiring all such signals to be routed from a receiving process on a adjunct processor to the main user process on the originating processor. Also disclosed is an arrangement for insuring that signals are not lost and that duplicate signals are not processed.