Patents by Inventor Donald R. Stence
Donald R. Stence has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11226817Abstract: A set of dependence relationships in a set of program instructions is detected by a processor. The set of dependence relationships comprises a first load instruction to load a first data object and a second load instruction to load a second data object from a second address that is provided by address data within the first data object. The processor identifies a number of dependence instances in the set of dependence relationships and determines that the number is over a pattern threshold. The processor sends an enhanced load request to a memory controller. The enhanced load request comprises instructions to load the first data object from a first address on a physical page, locate address data in the first data object based on a memory offset, load the second data object from a second address in the address data, and transmit the first and second data objects to the processor.Type: GrantFiled: July 11, 2019Date of Patent: January 18, 2022Assignee: International Business Machines CorporationInventors: Mohit Karve, Donald R. Stence, John B. Griswell, Jr., Brian W. Thompto
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Publication number: 20210011721Abstract: A set of dependence relationships in a set of program instructions is detected by a processor. The set of dependence relationships comprises a first load instruction to load a first data object and a second load instruction to load a second data object from a second address that is provided by address data within the first data object. The processor identifies a number of dependence instances in the set of dependence relationships and determines that the number is over a pattern threshold. The processor sends an enhanced load request to a memory controller. The enhanced load request comprises instructions to load the first data object from a first address on a physical page, locate address data in the first data object based on a memory offset, load the second data object from a second address in the address data, and transmit the first and second data objects to the processor.Type: ApplicationFiled: July 11, 2019Publication date: January 14, 2021Inventors: Mohit Karve, Donald R. Stence, John B. Griswell, JR., Brian W. Thompto
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Patent number: 10310860Abstract: A system and method adjust instruction dispatch in a multi-pipeline processor core having a plurality of execution units for improved performance of out-of-order execution of instructions. A dispatch adjust circuit receives a queue full signal from one or more of the execution queues that indicates the corresponding execution queue is full. In response to the queue full signal, the instruction dispatch circuit sends a stop signal to the instruction issuer to stop issuing additional instructions to the queues until one or more of the queues are empty. The dispatch adjust circuit may also receive a queue empty signal from the queues to detect when they are empty to send a start signal to the issuer.Type: GrantFiled: July 29, 2016Date of Patent: June 4, 2019Assignee: International Business Machines CorporationInventors: Wen-Tzer T. Chen, Diane G. Flemming, Sandy K. Kao, William A. Maron, Mysore S. Srinivas, Donald R. Stence, Calvin L. Sze
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Publication number: 20180032343Abstract: A system and method adjusts instruction dispatch in a multi-pipeline processor core having a plurality of execution units for improved performance of out-of-order execution of instructions. A dispatch adjust circuit receives a queue full signal from one or more the execution queues that indicates the execution queue is full. In response to the full queue signal, the instruction dispatch circuit sends a stop signal to the instruction issuer to stop issuing additional instructions to the queues until one or more of the queues are empty. The dispatch adjust circuit may also receive a queue empty signal from the queues to detect when they are empty to send a start signal to the issuer.Type: ApplicationFiled: July 29, 2016Publication date: February 1, 2018Inventors: Wen-Tzer T. Chen, Diane G. Flemming, Sandy K. Kao, William A. Maron, Mysore S. Srinivas, Donald R. Stence, Calvin L. Sze
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Patent number: 9626180Abstract: Mechanisms are provided for performing a live update of an operating system. The mechanisms receive an update to an operating system and clone a root volume group associated with an operating system instance executing in a first logical partition of the data processing system to generate a cloned root volume group. The mechanisms apply the update to the cloned root volume group to generate an updated and cloned root volume group and boot a second logical partition of the data processing system using the updated and cloned root volume group. Moreover, the mechanisms migrate application instances and application data to the second logical partition.Type: GrantFiled: December 16, 2013Date of Patent: April 18, 2017Assignee: International Business Machines CorporationInventors: Frederic Barrat, Philippe Bergheaud, Luke M. Browning, Laurent Dufour, Khalid Filali-Adib, Christophe Lombard, John M. McConaughy, Guy Menanteau, Stephen B. Peckham, David W. Sheffield, Donald R. Stence, Sungjin Yook
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Patent number: 9619223Abstract: Mechanisms are provided for performing a live update of an operating system. The mechanisms receive an update to an operating system and clone a root volume group associated with an operating system instance executing in a first logical partition of the data processing system to generate a cloned root volume group. The mechanisms apply the update to the cloned root volume group to generate an updated and cloned root volume group and boot a second logical partition of the data processing system using the updated and cloned root volume group. Moreover, the mechanisms migrate application instances and application data to the second logical partition.Type: GrantFiled: June 12, 2014Date of Patent: April 11, 2017Assignee: International Business Machines CorporationInventors: Frederic Barrat, Philippe Bergheaud, Luke M. Browning, Laurent Dufour, Khalid Filali-Adib, Christophe Lombard, John M. McConaughy, Guy Menanteau, Stephen B. Peckham, David W. Sheffield, Donald R. Stence, Sungjin Yook
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Patent number: 9075634Abstract: A symbol resolution unit can be configured for resolving conflicting operating system symbols. A default symbol resolution data structure can be accessed to resolve a symbol associated with a client of an operating system. A first data entry that corresponds to the symbol is located in the default symbol resolution data structure. It is determined that the first data entry indicates that the symbol is marked special (e.g., as a conflicting operating system symbol). A secondary symbol resolution data structure is accessed in response to determining that the first data entry indicates that the symbol is marked special. A second data entry that corresponds to the symbol is located in the secondary symbol resolution data structure based, at least in part, on an identifier of the client. A memory location indicated in the second data entry that corresponds to the symbol is provided to the client.Type: GrantFiled: July 12, 2010Date of Patent: July 7, 2015Assignee: International Business Machines CorporationInventors: Stephen B. Peckham, Donald R. Stence, Marc J. Stephenson
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Publication number: 20150169317Abstract: Mechanisms are provided for performing a live update of an operating system. The mechanisms receive an update to an operating system and clone a root volume group associated with an operating system instance executing in a first logical partition of the data processing system to generate a cloned root volume group. The mechanisms apply the update to the cloned root volume group to generate an updated and cloned root volume group and boot a second logical partition of the data processing system using the updated and cloned root volume group. Moreover, the mechanisms migrate application instances and application data to the second logical partition.Type: ApplicationFiled: June 12, 2014Publication date: June 18, 2015Inventors: Frederic Barrat, Philippe Bergheaud, Luke M. Browning, Laurent Dufour, Khalid Filali-Adib, Christophe Lombard, John M. McConaughy, Guy Menanteau, Stephen B. Peckham, David W. Sheffield, Donald R. Stence, Sungjin Yook
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Publication number: 20150169329Abstract: Mechanisms are provided for performing a live update of an operating system. The mechanisms receive an update to an operating system and clone a root volume group associated with an operating system instance executing in a first logical partition of the data processing system to generate a cloned root volume group. The mechanisms apply the update to the cloned root volume group to generate an updated and cloned root volume group and boot a second logical partition of the data processing system using the updated and cloned root volume group. Moreover, the mechanisms migrate application instances and application data to the second logical partition.Type: ApplicationFiled: December 16, 2013Publication date: June 18, 2015Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Frederic Barrat, Philippe Bergheaud, Luke M. Browning, Laurent Dufour, Khalid Filali-Adib, Christophe Lombard, John M. McConaughy, Guy Menanteau, Stephen B. Peckham, David W. Sheffield, Donald R. Stence, Sungjin Yook
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Patent number: 8677354Abstract: A kernel extension associated with a first instance of an operating system can be detected. The kernel extension is configured to extend functionality of the kernel when loaded in a kernel managed by a second instance of the operating system. Some embodiments are further directed to detecting symbols for the kernel extension, where the symbols specify one or more functions associated with the kernel extension. Some embodiments are further directed to generating a first namespace that is assigned only to the first of the plurality of instances of the operating system. The first namespace is separate from a second namespace for the second of the plurality of the instances of the operating system. Some embodiments are further directed to storing the symbols in the first namespace.Type: GrantFiled: July 12, 2010Date of Patent: March 18, 2014Assignee: International Business Machines CorporationInventors: Stephen B. Peckham, Donald R. Stence
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Publication number: 20120011350Abstract: Some embodiments of the inventive subject matter are directed to detecting a kernel extension associated with a first instance of an operating system (e.g., a virtual operating system). The kernel extension is configured to extend functionality of the kernel when loaded in a kernel managed by a second instance of the operating system (e.g., a global operating system). In some embodiments, the second instance of the operating system manages the first instance of the operating system (e.g., manages one or more virtual operating systems). In some embodiments, the instances of the operating system share the kernel. Some embodiments are further directed to detecting symbols for the kernel extension, where the symbols specify one or more functions associated with the kernel extension. Some embodiments are further directed to generating a first namespace that is assigned only to the first of the plurality of instances of the operating system.Type: ApplicationFiled: July 12, 2010Publication date: January 12, 2012Applicant: International Business Machines CorporationInventors: Stephen B. Peckham, Donald R. Stence
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Publication number: 20120011512Abstract: A symbol resolution unit can be configured for resolving conflicting operating system symbols. A default symbol resolution data structure can be accessed to resolve a symbol associated with a client of an operating system. A first data entry that corresponds to the symbol is located in the default symbol resolution data structure. It is determined that the first data entry indicates that the symbol is marked special (e.g., as a conflicting operating system symbol). A secondary symbol resolution data structure is accessed in response to determining that the first data entry indicates that the symbol is marked special. A second data entry that corresponds to the symbol is located in the secondary symbol resolution data structure based, at least in part, on an identifier of the client. A memory location indicated in the second data entry that corresponds to the symbol is provided to the client.Type: ApplicationFiled: July 12, 2010Publication date: January 12, 2012Applicant: International Business Machines CorporationInventors: Stephen B. Peckham, Donald R. Stence, Marc J. Stephenson