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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
Janet R Easton, Charles W Gainey Jr, Tan Lu, Ugochukwu C Njoku, Gustav E Sittmann III, Stephen G Wilkins, Frank W Brice Jr, Damian L Osisek, Donald W Schmidt: Demultiplexing grouped events into virtual event queues while in two levels of virtualization. International Business Machines Corporation, Cantor Colburn, Steven Chiu, May 31, 2011: US07954099 (4 worldwide citation)

A method, system, program product and computer data structure for providing for two levels of server virtualization. A first hypervisor enables multiple logical partitions to share a set of resources and provides a first level of virtualization. A second hypervisor enables multiple, independent virt ...


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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
Janet R Easton, Charles W Gainey, Tan Lu, Ugochukwu C Njoku, Gustav E Sittmann, Stephen G Wilkins, Frank W Brice, Damian L Osisek, Donald W Schmidt: Virtualization of infiniband host channel adapter interruptions. International Business Machines Corporation, Eugene I Shkurko, IBM Corp Intellectual Property Law, November 22, 2007: US20070271559-A1

A method, system, program product and computer data structure for providing for two levels of server virtualization. A first hypervisor enables multiple logical partitions to share a set of resources and provides a first level of virtualization. A second hypervisor enables multiple, independent virt ...


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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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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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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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Tan Lu, Daniel F Casper, David F Craddock, Robert J Dugan, Giles R Frazier: Method for pacing buffered data transfers over a network such as fibre channel. International Business Machines Corporation, John E Campbell, Floyd A Gonzalez, Lily Neff, August 31, 2004: US06785241 (55 worldwide citation)

The present invention provides a method for managing transmissions to a remote node having a buffer memory for receiving the transmitted packets and means for acknowledging the receipt of the packets. The method provides for a sender to maintain a sense of the availability of buffer memory even when ...


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Frank W Brice Jr, Scott M Carlson, Janet R Easton, Charles W Gainey Jr, Marten J Halma, Jeffrey P Kubala, Hans Helge Lehmann, Tan Lu, Kenneth J Oakes, Charles E Shapley, Leslie W Wyman, Harry M Yudenfriend: Method, system and program products for enhancing input/output processing for operating system images of a computing environment. International Business Machines Corporation, Eugene I Shkurko Esq, Blanche E Schiller Esq, Heslin Rothenberg Farley & Mesiti P C, February 7, 2006: US06996638 (50 worldwide citation)

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. An input/output subsystem image is identified by an input/output subsystem image identifier, which is used by various programs to desi ...



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