Patents by Inventor Harold Wade
Harold Wade 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: 8572341Abstract: A method, a system and a computer program product for handling speculative stores. The system determines when a speculative store buffer is not full. An indicator is generated when the speculative store buffer is not full, and the speculative stores are input into the speculative store buffer. When the speculative store buffer is full, a full buffer indicator is generated. Speculative stores prevented from entering the speculative store buffer are overflow stores. The overflow list is searched to determine whether one or more addresses of the overflow stores are present in the overflow list. When one or more addresses of the overflow stores are not present in the overflow list, the overflow stores are stored in the overflow list.Type: GrantFiled: September 15, 2009Date of Patent: October 29, 2013Assignee: International Business Machines CorporationInventors: Colin B. Blundell, Harold Wade Cain, III, Gheorghe C. Cascaval, Maged Milad Michael
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Publication number: 20130262424Abstract: Systems, methods, and products for database system transaction management are provided herein. One aspect provides for annotating via a computing device at least one data object residing on the computing device utilizing at least one transaction tag, the at least one transaction tag being configured to indicate a status of an associated data object; processing at least one database transaction utilizing a transactional memory process, wherein access to the at least one data object is determined based on the status of the at least one data object; and updating the status of the at least one data object responsive to an attempted access of the at least one data object by the at least one database transaction. Other embodiments and aspects are also described herein.Type: ApplicationFiled: March 30, 2012Publication date: October 3, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Harold Wade Cain, III, Donna N. Dillenberger, Michel H.T. Hack, Hong Min, Gong Su, James Zu-Chia Teng
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Publication number: 20130159678Abstract: A code section of a computer program to be executed by a computing device includes memory barrier instructions. Where the code section satisfies a threshold, the code section is modified, by enclosing the code section within a transaction that employs hardware transactional memory of the computing device, and removing the memory barrier instructions from the code section. Execution of the code section as has been enclosed within the transaction can be monitored to yield monitoring results. Where the monitoring results satisfy an abort threshold corresponding to excessive aborting of the execution of the code section as has been enclosed within the transaction, the code section is split into code sub-sections, and each code sub-section enclosed within a separate transaction that employs the hardware transactional memory. Splitting the code section sections and enclosing each code sub-section within a separate transaction can decrease occurrence of the code section aborting during execution.Type: ApplicationFiled: December 15, 2011Publication date: June 20, 2013Inventors: Toshihiko Koju, Takuya Nakaike, Ali Ijaz Sheikh, Harold Wade Cain, III, Maged M. Michael
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Patent number: 8392694Abstract: A method, system and computer program product for issuing one or more software initiated operations for creating a checkpoint of a register file and memory, and for restoring a register file and memory to the checkpointed state. At the execution of a checkpoint operation, the system returns a condition code indicating success or failure. When the condition code is set equal to one, one or more checkpoints are initiated. Contents of the register file and gated store buffer are stored each time the one or more checkpoints are initiated. When the checkpoint is created, the system notifies software when a hardware checkpoint capacity has been reached. One or more of the software checkpoint, hardware checkpoint, and handler checkpoint are utilized to provide a more precise point of restoration. During software execution, the register file and gated store buffer can be restored as defined by the one or more previous checkpoints.Type: GrantFiled: September 15, 2009Date of Patent: March 5, 2013Assignee: International Business Machines CorporationInventors: Colin B. Blundell, Harold Wade Cain, III, Gheorghe C. Cascaval, Maged Milad Michael
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Publication number: 20130007374Abstract: A dual-mode prefetch system for implementing checkpoint tag prefetching includes: a data array for storing data fetched from cache memory; a set of cache tags identifying the data stored in the data array; a checkpoint tag array storing data identification information; and a cache controller with prefetch logic.Type: ApplicationFiled: September 11, 2012Publication date: January 3, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Harold Wade Cain, III, Jong-Deok Choi
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Patent number: 8341352Abstract: A dual-mode prefetch mechanism for implementing checkpoint tag prefetching includes: a data array for storing data fetched from cache memory; a set of cache tags for identifying the data stored in the data array; a set of checkpoint tags for storing data identification; a cache controller including prefetch logic, the prefetch logic including a checkpoint prefetch controller and a checkpoint prefetch operator.Type: GrantFiled: April 17, 2007Date of Patent: December 25, 2012Assignee: International Business Machines CorporationInventors: Harold Wade Cain, III, Jong-Deok Choi
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Publication number: 20120303857Abstract: A cache management method using checkpoint tags in checkpoint mode includes steps of: receiving a request to save data; fetching at least one cache block including the data from cache memory; writing the data from the at least one cache block into the data array; writing a physical address and metadata of the cache block into an array of cache memory tags; and upon receipt of a restore request: fetching an identifier for the at least one cache block stored in the checkpoint tag array; reloading the cache memory with the at least one cache block in the checkpoint tag array; and switching to normal mode.Type: ApplicationFiled: August 2, 2012Publication date: November 29, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Harold Wade Cain, III, Jong-Deok Choi
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Patent number: 8131894Abstract: A system, method, and computer readable article of manufacture for sharing buffer management. The system includes: a predictor module to predict at runtime a transaction data size of a transaction according to history information of the transaction; and a resource management module to allocate sharing buffer resources for the transaction according to the predicted transaction data size in response to beginning of the transaction, to record an actual sharing buffer size occupied by the transaction in response to the successful commitment of the transaction, and to update the history information of the transaction.Type: GrantFiled: November 23, 2009Date of Patent: March 6, 2012Assignee: International Business Machines CorporationInventors: Harold Wade Cain, III, Rui Hou, Xiaowei Shen, Huayong Wang
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Patent number: 8122438Abstract: Computer implemented method, system and computer usable program code for profiling the execution of an application that is both space- and time-efficient and highly accurate. A computer implemented method for profiling the execution of an application includes sampling execution characteristics of the application at a plurality of sampling points to provide samples, and deriving a calling context of the samples. The application is continuously executed between sampling points while additional profiling data is gathered.Type: GrantFiled: June 18, 2008Date of Patent: February 21, 2012Assignee: International Business Machines CorporationInventors: Harold Wade Cain, III, Jong-Deok Choi, Mauricio Jose Serrano, Xiaotong Zhuang
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Patent number: 7818722Abstract: Computer implemented method, system and computer usable program code for profiling the execution of an application that is both space- and time-efficient and highly accurate. A computer implemented method for profiling the execution of an application includes sampling execution characteristics of the application at a plurality of sampling points to provide samples, and deriving a calling context of the samples. The application is continuously executed between sampling points while additional profiling data is gathered.Type: GrantFiled: June 9, 2006Date of Patent: October 19, 2010Assignee: International Business Machines CorporationInventors: Harold Wade Cain, III, Jong-Deok Choi, Mauricio Jose Serrano, Xiaotong Zhuang
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Publication number: 20100138571Abstract: A system, method, and computer readable article of manufacture for sharing buffer management. The system includes: a predictor module to predict at runtime a transaction data size of a transaction according to history information of the transaction; and a resource management module to allocate sharing buffer resources for the transaction according to the predicted transaction data size in response to beginning of the transaction, to record an actual sharing buffer size occupied by the transaction in response to the successful commitment of the transaction, and to update the history information of the transaction.Type: ApplicationFiled: November 23, 2009Publication date: June 3, 2010Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Harold Wade Cain, III, Rui Hou, Xiaowei Shen, Huayong Wang
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Patent number: 7715907Abstract: A method and system for atrial fibrillation analysis, characterization, and mapping is disclosed. A finite element model (FEM) representing a physical structure of a heart is generated. Electrogram data can be sensed at various locations in the heart using an electrophysiology catheter, and the electrogram data is mapped to the elements of the FEM. Function parameters, which measure some characteristics of AF arrhythmia, are then simultaneously calculated for all of the elements of the FEM based on the electrogram data mapped to the elements of the FEM. An artificial neural network (ANN) can be used to calculate the function parameters.Type: GrantFiled: August 1, 2007Date of Patent: May 11, 2010Assignee: Siemens Medical Solutions USA, Inc.Inventors: Detlef W. Koertge, Hongxuan Zhang, Harold Wade, Myrtis Randolph, Lori Palmquist
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Publication number: 20090113132Abstract: A computer-implemented method of cache replacement includes steps of: determining whether each cache block in a cache memory is a read or a write block; augmenting metadata associated with each cache block with an indicator of the type of access; receiving an access request resulting in a cache miss, the cache miss indicating that a cache block will need to be replaced; examining the indicator in the metadata of each cache block for determining a probability that said cache block will be replaced; and selecting for replacement the cache block with the highest probability of replacement.Type: ApplicationFiled: October 24, 2007Publication date: April 30, 2009Applicant: International Business Machines CorporationInventors: Harold Wade Cain, III, Jong-Deok Choi, Mauricio J. Serrano
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Publication number: 20080288926Abstract: Computer implemented method, system and computer usable program code for profiling the execution of an application that is both space-and time-efficient and highly accurate. A computer implemented method for profiling the execution of an application includes sampling execution characteristics of the application at a plurality of sampling points to provide samples, and deriving a calling context of the samples. The application is continuously executed between sampling points while additional profiling data is gathered.Type: ApplicationFiled: June 18, 2008Publication date: November 20, 2008Applicant: INTERNATIONAL BUSINESS MACHINE CORPORATIONInventors: Harold Wade Cain, III, Jong-Deok Choi, Mauricio Jose Serrano, Xiaotong Zhuang
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Publication number: 20080263257Abstract: A dual-mode prefetch mechanism for implementing checkpoint tag prefetching includes: a data array for storing data fetched from cache memory; a set of cache tags for identifying the data stored in the data array; a set of checkpoint tags for storing data identification; a cache controller including prefetch logic, the prefetch logic including a checkpoint prefetch controller and a checkpoint prefetch operator.Type: ApplicationFiled: April 17, 2007Publication date: October 23, 2008Applicant: International Business Machines CorporationInventors: Harold Wade Cain III, Jong-Deok Choi
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Publication number: 20080214945Abstract: A method and system for atrial fibrillation analysis, characterization, and mapping is disclosed. A finite element model (FEM) representing a physical structure of a heart is generated. Electrogram data can be sensed at various locations in the heart using an electrophysiology catheter, and the electrogram data is mapped to the elements of the FEM. Function parameters, which measure some characteristics of AF arrhythmia, are then simultaneously calculated for all of the elements of the FEM based on the electrogram data mapped to the elements of the FEM. An artificial neural network (ANN) can be used to calculate the function parameters.Type: ApplicationFiled: August 1, 2007Publication date: September 4, 2008Applicant: Siemens Medical Solutions USA, Inc.Inventors: Detlef W. Koertge, Hongxuan Zhang, Harold Wade, Myrtis Randolph, Lori Palmquist
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Publication number: 20070288908Abstract: Computer implemented method, system and computer usable program code for profiling the execution of an application that is both space-and time-efficient and highly accurate. A computer implemented method for profiling the execution of an application includes sampling execution characteristics of the application at a plurality of sampling points to provide samples, and deriving a calling context of the samples. The application is continuously executed between sampling points while additional profiling data is gathered.Type: ApplicationFiled: June 9, 2006Publication date: December 13, 2007Applicant: International Business Machines CorporationInventors: Harold Wade Cain, Jong-Deok Choi, Mauricio Jose Serrano, Xiaotong Zhuang
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Patent number: 6904982Abstract: A sub-sea mud pump system includes a plurality of pump units, and each pumping unit includes a plurality of pumping elements. Each pumping element includes a pressure vessel with a first and a second chamber, a separating member between the first and second chambers, a measurement device adapted to measure the volume of at least one of the first and second chambers, a hydraulic inlet control valve and a hydraulic outlet control valve coupled to the first chamber, a mud suction valve and a mud discharge valve coupled to the second chamber. The first chamber is hydraulically coupled to receive and discharge a hydraulic fluid, and the second chamber is hydraulically coupled to receive and discharge a drilling fluid. The separating member is adapted to move within its the pressure vessel in response to a pressure differential between the first and second chambers. The pump system also includes a hydraulic control unit adapted to control the plurality of pump units.Type: GrantFiled: January 13, 2003Date of Patent: June 14, 2005Assignee: Hydril CompanyInventors: Robert A. Judge, Dat Manh Nguyen, Harold Wade, Ronald D. Brooks
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Publication number: 20040007392Abstract: A sub-sea mud pump system includes a plurality of pump units, and each pumping unit includes a plurality of pumping elements. Each pumping element includes a pressure vessel with a first and a second chamber, a separating member between the first and second chambers, a measurement device adapted to measure the volume of at least one of the first and second chambers, a hydraulic inlet control valve and a hydraulic outlet control valve coupled to the first chamber, a mud suction valve and a mud discharge valve coupled to the second chamber. The first chamber is hydraulically coupled to receive and discharge a hydraulic fluid, and the second chamber is hydraulically coupled to receive and discharge a drilling fluid. The separating member is adapted to move within its the pressure vessel in response to a pressure differential between the first and second chambers. The pump system also includes a hydraulic control unit adapted to control the plurality of pump units.Type: ApplicationFiled: January 13, 2003Publication date: January 15, 2004Inventors: Robert A. Judge, Dat Manh Nguyen, Harold Wade