Stuart William Warnsman

US Patent:

58225315, Oct 13, 1998

Filed:

Jul 22, 1996

Appl. No.:

8/681324

Inventors:

Robert Gorczyca - Cambridge MA
Aamir Arshad Rashid - Norwood MA
Kevin Forress Rodgers - Derry NH
Stuart Warnsman - Watertown MA
Thomas Van Weaver - Dripping Springs TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 9445
G06F 906

US Classification:

39520051

Abstract:

A method and system for dynamically reconfiguring a cluster of computer systems are disclosed. In accordance with the present invention, a first configuration file is provided at a plurality of computer systems within a cluster that specifies a current configuration of the cluster. A second configuration file is created at each of the plurality of computer systems that specifies a modified configuration of the cluster. The modified configuration is then verified. In response to the verification, the cluster is operated utilizing the modified configuration. In accordance with one embodiment, the dynamic reconfiguration of the cluster can include a reconfiguration of the cluster topology or resources.

US Patent:

53012801, Apr 5, 1994

Filed:

Oct 2, 1989

Appl. No.:

7/416225

Inventors:

Philip L. Schwartz - Framingham MA
Stuart Warnsman - Southboro MA
Nicholas Zoda - Marlboro MA
John F. Pilat - Hopkinton MA

Assignee:

Data General Corporation - Westboro MA

International Classification:

G06F 1320

US Classification:

395325

Abstract:

A communication protocol available to any type module on the computer bus. Application programs are treated as clients or servers. A serveport is created in the server module. A client issues a connect request to the server identifying the serveport. The server assigns a N-slot TID capability to identify, describe and protect a storage location for receiving a start buffer from the client and sends the N-slot TID to the client to establish a connection. The start buffer includes a TID list which permits the client and server to reliably communicate back and forth. Once a connection has been established, data can be moved between the server and the client. High-level instructions and commands are sent as data through these connections. After the communication has been completed, the connection can be disconnected by the client or broken by the server.