Patents by Inventor Michael J. Cadigan, Jr.
Michael J. Cadigan, Jr. 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: 9747103Abstract: According to an aspect, management of auxiliary branch prediction in a processing system including a primary branch predictor and an auxiliary branch predictor is provided. A congruence class of the auxiliary branch predictor is located based on receiving a primary branch predictor misprediction indicator corresponding to a mispredicted target address of the primary branch predictor. An entry is identified in the congruence class having an auxiliary usefulness level set to a least useful level with respect to one or more other entries of the congruence class. Auxiliary data corresponding to the mispredicted target address is installed into the entry. The auxiliary usefulness level of the entry is reset to an initial value based on installing the auxiliary data.Type: GrantFiled: August 24, 2016Date of Patent: August 29, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: James J. Bonanno, Michael J. Cadigan, Jr., Matthias D. Heizmann, Brian R. Prasky
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Publication number: 20170168825Abstract: According to an aspect, management of auxiliary branch prediction in a processing system including a primary branch predictor and an auxiliary branch predictor is provided. A congruence class of the auxiliary branch predictor is located based on receiving a primary branch predictor misprediction indicator corresponding to a mispredicted target address of the primary branch predictor. An entry is identified in the congruence class having an auxiliary usefulness level set to a least useful level with respect to one or more other entries of the congruence class. Auxiliary data corresponding to the mispredicted target address is installed into the entry. The auxiliary usefulness level of the entry is reset to an initial value based on installing the auxiliary data.Type: ApplicationFiled: August 24, 2016Publication date: June 15, 2017Inventors: James J. Bonanno, Michael J. Cadigan, JR., Matthias D. Heizmann, Brian R. Prasky
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Publication number: 20170168828Abstract: According to an aspect, virtualized weight perceptron branch prediction is provided in a processing system. A selection is performed between two or more history values at different positions of a history vector based on a virtualization map value that maps a first selected history value to a first weight of a plurality of weights, where a number of history values in the history vector is greater than a number of the weights. The first selected history value is applied to the first weight in a perceptron branch predictor to determine a first modified virtualized weight. The first modified virtualized weight is summed with a plurality of modified virtualized weights to produce a prediction direction. The prediction direction is output as a branch predictor result to control instruction fetching in a processor of the processing system.Type: ApplicationFiled: June 28, 2016Publication date: June 15, 2017Inventors: James J. Bonanno, Michael J. Cadigan, JR., Adam B. Collura, Matthias D. Heizmann, Daniel Lipetz, Brian R. Prasky
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Patent number: 9507598Abstract: According to an aspect, management of auxiliary branch prediction in a processing system including a primary branch predictor and an auxiliary branch predictor is provided. A congruence class of the auxiliary branch predictor is located based on receiving a primary branch predictor misprediction indicator corresponding to a mispredicted target address of the primary branch predictor. An entry is identified in the congruence class having an auxiliary usefulness level set to a least useful level with respect to one or more other entries of the congruence class. Auxiliary data corresponding to the mispredicted target address is installed into the entry. The auxiliary usefulness level of the entry is reset to an initial value based on installing the auxiliary data.Type: GrantFiled: December 15, 2015Date of Patent: November 29, 2016Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: James J. Bonanno, Michael J. Cadigan, Jr., Matthias D. Heizmann, Brian R. Prasky
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Patent number: 9477501Abstract: Embodiments relate to a method for encapsulating a hardware application for virtualization. The method surrounds the hardware application with a service layer controller and ring interfaces. The ring interfaces dictates a virtual function that the hardware application is running. The method controls the hardware application so that the hardware application is reset in between each of a plurality of running jobs. The method tags, by the ring interfaces, each of a plurality of requests with an identifier signifying a virtual function that the respective request belongs to. The method ensures that there are not any outstanding requests following a quiesce of the hardware application.Type: GrantFiled: September 30, 2014Date of Patent: October 25, 2016Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Michael J. Cadigan, Jr., Howard M. Haynie, Scot H. Rider, Mushfiq U. Saleheen, Donald W. Schmidt
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Patent number: 9471314Abstract: According to an aspect, branch prediction in a processing system that includes a primary branch predictor and an auxiliary perceptron branch predictor is provided. The primary branch predictor and the auxiliary perceptron branch predictor are searched to make a branch prediction. A perceptron magnitude of a perceptron branch predictor from the auxiliary perceptron branch predictor is compared to a magnitude usage limit. An auxiliary predictor result from the auxiliary perceptron branch predictor is selected as the branch prediction based on the perceptron magnitude exceeding the magnitude usage limit. A primary predictor result from the primary branch predictor is selected as the branch prediction based on the perceptron magnitude not exceeding the magnitude usage limit.Type: GrantFiled: December 15, 2015Date of Patent: October 18, 2016Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: James J. Bonanno, Michael J. Cadigan, Jr., Adam B. Collura, Daniel Lipetz
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Patent number: 9442726Abstract: According to an aspect, virtualized weight perceptron branch prediction is provided in a processing system. A selection is performed between two or more history values at different positions of a history vector based on a virtualization map value that maps a first selected history value to a first weight of a plurality of weights, where a number of history values in the history vector is greater than a number of the weights. The first selected history value is applied to the first weight in a perceptron branch predictor to determine a first modified virtualized weight. The first modified virtualized weight is summed with a plurality of modified virtualized weights to produce a prediction direction. The prediction direction is output as a branch predictor result to control instruction fetching in a processor of the processing system.Type: GrantFiled: December 15, 2015Date of Patent: September 13, 2016Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: James J. Bonanno, Michael J. Cadigan, Jr., Adam B. Collura, Matthias D. Heizmann, Daniel Lipetz, Brian R. Prasky
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Patent number: 9298484Abstract: Embodiments relate to a computer system comprising a service layer controller. The computer system comprises a ring interface unit configured to provide access to a host system that enables access to a plurality of virtual machines (VMs). The computer system comprises a hardware application configured to be encapsulated by the service layer controller such that the hardware application communicates to the host system via interfaces controlled by the ring interface unit and service layer controller.Type: GrantFiled: March 14, 2013Date of Patent: March 29, 2016Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Michael J. Cadigan, Jr., Howard M. Haynie, Scot H. Rider, Mushfiq U. Saleheen, Donald W. Schmidt
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Patent number: 9214957Abstract: A calculation, prediction and validation method can include receiving a portion of a data packet in a data buffer, computing, in a processor, information related to the checksum of the data packet based on the portion of the data packet and processing the data packet in the processor.Type: GrantFiled: October 17, 2012Date of Patent: December 15, 2015Assignee: International Business Machines CorporationInventors: Carl A. Bender, Michael J. Cadigan, Jr., Nihad Hadzic, Howard M Haynie, Jeffrey M. Turner, Raymond Wong
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Patent number: 9158698Abstract: According to an embodiment, a computer-implemented method for control block management is provided. The computer-implemented method includes placing one or more control blocks in a queue for execution by a computer hardware device. The computer-implemented method also includes allocating a purge flag in each of the control blocks. The purge flag instructs the computer hardware device to skip execution of the corresponding control block.Type: GrantFiled: March 15, 2013Date of Patent: October 13, 2015Assignee: International Business Machines CorporationInventors: Michael J. Cadigan, Jr., Scot H. Rider, Donald W. Schmidt
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Patent number: 8982886Abstract: A computer-implemented method that includes creating a master copy of a header for all packets of a data transmission event, the master copy including a plurality of intact constant header information, the plurality of intact constant header information being constant for all packets of the data transmission event, storing unique header information for all packets of the data transmission event, the unique header information including information unique to at least one packet of the data transmission event, tokenizing identities of each packet of the data transmission event to create a tokenized packet ID for each packet, and indexing the stored unique header information based on the tokenizing. According to the method, at packet read-time, unique header information associated with the packet is overlayed onto the master copy to create a unique packet.Type: GrantFiled: November 14, 2012Date of Patent: March 17, 2015Assignee: International Business Machines CorporationInventors: Michael J. Cadigan, Jr., Nihad Hadzic, Jeffrey M. Turner, Raymond Wong
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Publication number: 20150058848Abstract: Embodiments relate to a method for encapsulating a hardware application for virtualization. The method surrounds the hardware application with a service layer controller and ring interfaces. The ring interfaces dictates a virtual function that the hardware application is running. The method controls the hardware application so that the hardware application is reset in between each of a plurality of running jobs. The method tags, by the ring interfaces, each of a plurality of requests with an identifier signifying a virtual function that the respective request belongs to. The method ensures that there are not any outstanding requests following a quiesce of the hardware application.Type: ApplicationFiled: September 30, 2014Publication date: February 26, 2015Inventors: Michael J. Cadigan, JR., Howard M. Haynie, Scot H. Rider, Mushfiq U. Saleheen, Donald W. Schmidt
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Patent number: 8902890Abstract: The method includes creating a master copy of a header for all packets of a data transmission event, the master copy including a plurality of intact constant header information, the plurality of intact constant header information being constant for all packets of the data transmission event, storing unique header information for all packets of the data transmission event, the unique header information including information unique to at least one packet of the data transmission event, tokenizing identities of each packet of the data transmission event to create a tokenized packet ID for each packet, and indexing the stored unique header information based on the tokenizing. A computer program product for directing a computer processor to perform a method. According to the method, at packet read-time, unique header information associated with the packet is overlayed onto the master copy to create a unique packet.Type: GrantFiled: May 27, 2011Date of Patent: December 2, 2014Assignee: International Business Machines CorporationInventors: Michael J. Cadigan, Jr., Nihad Hadzic, Jeffrey M. Turner, Raymond Wong
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Publication number: 20140281253Abstract: According to an embodiment, a computer-implemented method for control block management is provided. The computer-implemented method includes placing one or more control blocks in a queue for execution by a computer hardware device. The computer-implemented method also includes allocating a purge flag in each of the control blocks. The purge flag instructs the computer hardware device to skip execution of the corresponding control block.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Michael J. Cadigan, JR., Scot H. Rider, Donald W. Schmidt
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Publication number: 20140282506Abstract: Embodiments relate to a computer system comprising a service layer controller. The computer system comprises a ring interface unit configured to provide access to a host system that enables access to a plurality of virtual machines (VMs). The computer system comprises a hardware application configured to be encapsulated by the service layer controller such that the hardware application communicates to the host system via interfaces controlled by the ring interface unit and service layer controller.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Michael J. Cadigan, Jr., Howard M. Haynie, Scot H. Rider, Mushfiq U. Saleheen, Donald W. Schmidt
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Patent number: 8806315Abstract: A calculation, prediction and validation method can include receiving a portion of a data packet in a data buffer, computing, in a processor, information related to the checksum of the data packet based on the portion of the data packet and processing the data packet in the processor.Type: GrantFiled: October 31, 2013Date of Patent: August 12, 2014Assignee: International Business Machines CorporationInventors: Carl A. Bender, Michael J. Cadigan, Jr., Nihad Hadzic, Howard M Haynie, Jeffrey M. Turner, Raymond Wong
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Publication number: 20140047307Abstract: A calculation, prediction and validation method can include receiving a portion of a data packet in a data buffer, computing, in a processor, information related to the checksum of the data packet based on the portion of the data packet and processing the data packet in the processor.Type: ApplicationFiled: October 31, 2013Publication date: February 13, 2014Applicant: International Business Machines CorporationInventors: Carl A. Bender, Michael J. Cadigan, JR., Nihad Hadzic, Howard M Haynie, Jeffrey M. Turner, Raymond Wong
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Patent number: 8547847Abstract: A method, computer program product, and device are provided for transparent separation of traffic. A communication interface is configured to transmit and receive traffic over a network. A stack is configured to dynamically identify the traffic as interactive traffic and non-interactive traffic. When the stack identifies the non-interactive traffic, the stack is configured to move the non-interactive traffic to a non-interactive queue.Type: GrantFiled: July 22, 2010Date of Patent: October 1, 2013Assignee: International Business Machines CorporationInventors: Patrick G. Brown, Michael J. Cadigan, Jr., Thomas D. Moore, Bruce H. Ratcliff, Jerry W. Stevens, Jeffrey M. Turner
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Patent number: 8351426Abstract: A method for Ethernet virtualization using assisted frame correction. The method comprises receiving at a host adapter data packets from a network, storing the received data packets in host memory, storing the received data packets in a hardware queue located on the host adapter, setting a status indicator reflecting the status of the data packets based on results of the checking, and sending the status indicator to the host memory.Type: GrantFiled: March 20, 2008Date of Patent: January 8, 2013Assignee: International Business Machines CorporationInventors: Michael J. Cadigan, Jr., Jeffrey M. Turner, Stephen R. Valley
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Publication number: 20120304040Abstract: A checksum calculation, prediction and validation system includes a host system, a network interface, a reception pipeline disposed between the host system and network interface and configured to calculate an expected full checksum related to packets received in the host system and a transmission pipeline disposed between the host system and network interface and configured calculate factors related to packets for transmission on the network interface.Type: ApplicationFiled: May 27, 2011Publication date: November 29, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Carl A. Bender, Michael J. Cadigan, JR., Nihad Hadzic, Howard M. Haynie, Jeffrey M. Turner, Raymond Wong