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Ugochukwu Njoku
Frank W Brice Jr, Janet R Easton, Charles W Gainey Jr, Jeffrey P Kubala, Hans Helge Lehmann, Tan Lu, Ugochukwu Njoku Charles, Kenneth J Oakes, Dale F Riedy Jr, Charles E Shapley, Gustav E Sittmann, Leslie W Wyman, Harry M Yudenfriend: Managing sets of input/output communications subadapters of an input/output subsystem. International Business Machines Corporation, Eugene I Shkurko Esq, Blanch E Schiller Esq, Heslin Rothenberg Farley & Mesiti P C, October 2, 2007: US07277968 (35 worldwide citation)

Input/output (I/O) communications subadapters, such as subchannels, of an I/O subsystem are dedicated to components, such as I/O devices, of the I/O subsystem. The subadapters provide information about the associated components, in response to the execution of I/O instructions. To enhance I/O connec ...


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Ugochukwu Njoku
Frank W Brice, Janet R Easton, Charles W Gainey, Jeffrey P Kubala, Hans Helge Lehmann, Tan Lu, Ugochukwu Njoku Charles, Kenneth J Oakes, Dale F Riedy, Charles E Shapley, Gustav E Sittmann, Leslie W Wyman, Harry M Yudenfriend: Managing sets of input/output communications subadapters of an input/output subsystem. International Business Machines Corporation, Heslin Rothenberg Farley & Mesiti PC, July 28, 2005: US20050165969-A1

Input/output (I/O) communications subadapters, such as subchannels, of an I/O subsystem are dedicated to components, such as I/O devices, of the I/O subsystem. The subadapters provide information about the associated components, in response to the execution of I/O instructions. To enhance I/O connec ...


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Ugochukwu Njoku
Frank W Brice, Charles W Gainey, Marten J Halma, Eugene P Hefferon, Carol B Hernandez, Jeffrey P Kubala, Tan Lu, Ugochukwu Njoku Charles, Kenneth J Oakes, Dale F Riedy, Charles E Shapley, Gustav E Sittmann, Leslie W Wyman, Harry M Yudenfriend: Managing input/output subsystem images of an input/output subsystem. International Business Machines Corporation, Heslin Rothenberg Farley & Mesiti PC, November 18, 2004: US20040230783-A1

An input/output subsystem is configured as a plurality of input/output subsystem images, each of which appears to a program as an independent input/output subsystem. One or more input/output subsystem images of the plurality of input/output subsystem images are managed. An aspect of this management ...


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Frank W Brice Jr, Joseph C Elliott, Kenneth J Fredericks, Robert E Galbraith, Marten J Halma, Roger E Hough, Suzanne M John, Paul A Malinowski, Allan S Meritt, Kenneth J Oakes, John C Rathjen Jr, Martin W Sachs, David E Stucki, Leslie W Wyman: Method and means for sharing I/O resources by a plurality of operating systems. International Business Machines Corporation, Bernard M Goldman, May 9, 1995: US05414851 (150 worldwide citation)

Provides a method for increasing the connectivity of I/O resources to a multiplicity of operating systems (OSs) running in different resource partitions of a computer electronic complex (CEC) to obtain sharing of the I/O resources among the OSs of the CEC, including channels, subchannels (devices), ...


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Richard Cwiakala, Eugene P Hefferon, Kenneth J Oakes, Allen H Preston, David E Stucki, Leslie W Wyman, Harry M Yudenfriend: Dynamically changing a system I/O configuration definition. International Business Machines, Floyd A Gonzalez, December 8, 1992: US05170472 (145 worldwide citation)

A mechanism for changing the system I/O configuration definition in the channel subsystem of a data processing system without having to do a power on reset operation. The data processing system includes one or more central processing units, an I/O processor, a storage addressable by the central proc ...


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Kenneth J Fredericks, Robert E Galbraith, Richard R Guyette, Marten J Halma, Roger E Hough, Suzanne M John, James C Mazurowski, Kenneth J Oakes, Leslie W Wyman: Pass-through for I/O channel subsystem call instructions for accessing shared resources in a computer system having a plurality of operating systems. International Business Machines Corporation, Bernard M Goldman, February 4, 1997: US05600805 (142 worldwide citation)

Enables any OS of plural OSs within any of plural logical-resource partitions (LPARs) of a CEC to use interpretive execution for synchronously-executable CHSC (channel subsystem call) commands. A CHSC command authorization mask (CCAM) is provided to control which CHSC commands are allowed to execute ...


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Scott M Carlson, Greg A Dyck, Tan Lu, Kenneth J Oakes, Dale F Riedy Jr, William J Rooney, John S Trotter, Leslie W Wyman, Harry M Yudenfriend: Emulation of extended input/output measurement block facilities. International Business Machines Corporation, John E Campbell, October 6, 2009: US07600053 (72 worldwide citation)

An Extended Input/output (I/O) measurement block facility is emulated. The facility provides for the collection of relevant I/O measurement data, and the storing for later efficient retrieval of that data in an extended measurement block. The stored data relates to the performance of an I/O subchann ...


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Miriam P Brown, Richard Cwiakala, Kenneth J Fredericks, Marten J Halma, David W Hollar, Roger E Hough, Suzanne M John, Assaf Marron, James C Mazurowski, Kenneth J Oakes, Charles E Shapley, Leslie W Wyman: Asynchronous command support for shared channels for a computer complex having multiple operating systems. International Business Machines Corporation, Bernard M Goldman, September 19, 1995: US05452455 (71 worldwide citation)

This invention involves reconfiguration support for shared I/O resources in a a computer electronic complex (CEC) supporting both shared and unshared I/O channels of the type described and claimed in U.S. patent application Ser. No. 07/898,867 (PO9-92-016) filed on the same day as the subject applic ...


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Scott M Carlson, Greg A Dyck, Tan Lu, Kenneth J Oakes, Dale F Riedy Jr, William J Rooney, John S Trotter, Leslie W Wyman, Harry M Yudenfriend: Extended input/output measurement facilities. International Business Machines Corporation, John E Campbell, Heslin Rothenberg Farley & Mesiti, February 14, 2006: US07000036 (68 worldwide citation)

Input/output (I/O) measurement facilities are provided. An extended I/O measurement block facility is provided that enables measurement blocks to be stored in discontiguous areas of main storage and to be accessed directly via addresses. In a further aspect, an extended I/O measurement word facility ...



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