Patents by Inventor Kevin Barnett

Kevin Barnett 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).

  • Patent number: 11475191
    Abstract: Provided are systems, methods, and media for handling simulation of logic under test. An example method includes receiving a simulation model for the logic under test. Generating second logic that is configured to create a set of output logic signals based on an existing set of input logic signals of the logic under test. Rebuilding the simulation model based, at least in part, on the second logic. Examining a netlist of the rebuilt simulation model to identify the set of output logic signals created by the second logic. Generating during the execution of the simulation, a bus trace that is configured to capture at least the identified set of output logic signals.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: October 18, 2022
    Assignee: International Business Machines Corporation
    Inventors: Paul Umbarger, Debapriya Chatterjee, Karen Yokum, John A. Schumann, Bryant Cockcroft, Kevin Barnett
  • Patent number: 11436013
    Abstract: A method of checking for a stall condition in a processor is disclosed, the method including inserting an inline instruction sequence into a thread, the inline instruction sequence configured to read the result from a timing register during processing of a first instruction and store the result in a first general purpose register, wherein the timing register functions as a timer for the processor; and read the results from the timing register during processing of a second instruction and store the results in a second general purpose register, wherein the second instruction is the next consecutive instruction after the first instruction. The inline thread sequence may be inserted in sequence with the thread and further configured to compare the difference between the result in the first and second general purpose register to a programmable threshold.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: September 6, 2022
    Assignee: International Business Machines Corporation
    Inventors: Omesh Bajaj, Kevin Barnett, Debapriya Chatterjee, Bryant Cockcroft, Jamory Hawkins, Lance G. Hehenberger, Jeffrey Kellington, Paul Lecocq, Lawrence Leitner, Tharunachalam Pindicura, John A. Schumann, Paul K. Umbarger, Karen Yokum
  • Patent number: 11243864
    Abstract: An instruction may be associated with a memory address. During execution of the instruction, the memory address may be translated to a next level memory address. The instruction may also be marked for address tracing. If the instruction is marked for address tracing, then during execution of the instruction, the memory address and the next level memory address may be recorded.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: February 8, 2022
    Assignee: International Business Machines Corporation
    Inventors: Bryant Cockcroft, John A. Schumann, Debapriya Chatterjee, Larry Leitner, Kevin Barnett, Karen Yokum
  • Publication number: 20210081296
    Abstract: An instruction may be associated with a memory address. During execution of the instruction, the memory address may be translated to a next level memory address. The instruction may also be marked for address tracing. If the instruction is marked for address tracing, then during execution of the instruction, the memory address and the next level memory address may be recorded.
    Type: Application
    Filed: September 17, 2019
    Publication date: March 18, 2021
    Inventors: Bryant Cockcroft, John A. Schumann, Debapriya Chatterjee, Larry Leitner, Kevin Barnett, Karen Yokum
  • Patent number: 10896273
    Abstract: A computer system includes a hardware accelerator and host processor. The hardware accelerator executes a simulation of a first logical model according to a plurality of simulation cycles. The host processor determines a fault checkpoint based on a logic fault that occurs in response to executing the simulation. The host processor verifies removal of the logic fault based on rerunning the simulation from the fault checkpoint.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: January 19, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: John A. Schumann, Debapriya Chatterjee, Bryant Cockcroft, Kevin Barnett, Piriya K. Hall, Paul Umbarger, Karen Yokum
  • Publication number: 20200364313
    Abstract: Provided are systems, methods, and media for handling simulation of logic under test. An example method includes receiving a simulation model for the logic under test. Generating second logic that is configured to create a set of output logic signals based on an existing set of input logic signals of the logic under test. Rebuilding the simulation model based, at least in part, on the second logic. Examining a netlist of the rebuilt simulation model to identify the set of output logic signals created by the second logic. Generating during the execution of the simulation, a bus trace that is configured to capture at least the identified set of output logic signals.
    Type: Application
    Filed: May 15, 2019
    Publication date: November 19, 2020
    Inventors: Paul Umbarger, Debapriya Chatterjee, Karen Yokum, John A. Schumann, Bryant Cockcroft, Kevin Barnett
  • Publication number: 20200225952
    Abstract: A method of checking for a stall condition in a processor is disclosed, the method including inserting an inline instruction sequence into a thread, the inline instruction sequence configured to read the result from a timing register during processing of a first instruction and store the result in a first general purpose register, wherein the timing register functions as a timer for the processor; and read the results from the timing register during processing of a second instruction and store the results in a second general purpose register, wherein the second instruction is the next consecutive instruction after the first instruction. The inline thread sequence may be inserted in sequence with the thread and further configured to compare the difference between the result in the first and second general purpose register to a programmable threshold.
    Type: Application
    Filed: March 26, 2020
    Publication date: July 16, 2020
    Inventors: Omesh Bajaj, Kevin Barnett, Debapriya Chatterjee, Bryant Cockcroft, Jamory Hawkins, Lance G. Hehenberger, Jeffrey Kellington, Paul Lecocq, Lawrence Leitner, Tharunachalam Pindicura, John A. Schumann, Paul K. Umbarger, Karen Yokum
  • Patent number: 10705843
    Abstract: A method of checking for a stall condition in a processor is disclosed, the method including inserting an inline instruction sequence into a thread, the inline instruction sequence configured to read the result from a timing register during processing of a first instruction and store the result in a first general purpose register, wherein the timing register functions as a timer for the processor; and read the results from the timing register during processing of a second instruction and store the results in a second general purpose register, wherein the second instruction is the next consecutive instruction after the first instruction. The inline thread sequence may be inserted in sequence with the thread and further configured to compare the difference between the result in the first and second general purpose register to a programmable threshold.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: July 7, 2020
    Assignee: International Business Machines Corporation
    Inventors: Omesh Bajaj, Kevin Barnett, Debapriya Chatterjee, Bryant Cockcroft, Jamory Hawkins, Lance G. Hehenberger, Jeffrey Kellington, Paul Lecocq, Lawrence Leitner, Tharunachalam Pindicura, John A. Schumann, Paul K. Umbarger, Karen Yokum
  • Publication number: 20200117766
    Abstract: A computer system includes a hardware accelerator and host processor. The hardware accelerator executes a simulation of a first logical model according to a plurality of simulation cycles. The host processor determines a fault checkpoint based on a logic fault that occurs in response to executing the simulation. The host processor verifies removal of the logic fault based on rerunning the simulation from the fault checkpoint.
    Type: Application
    Filed: October 12, 2018
    Publication date: April 16, 2020
    Inventors: JOHN A. SCHUMANN, DEBAPRIYA CHATTERJEE, BRYANT COCKCROFT, KEVIN BARNETT, PIRIYA K. HALL, PAUL UMBARGER, KAREN YOKUM
  • Publication number: 20190196816
    Abstract: A method of checking for a stall condition in a processor is disclosed, the method including inserting an inline instruction sequence into a thread, the inline instruction sequence configured to read the result from a timing register during processing of a first instruction and store the result in a first general purpose register, wherein the timing register functions as a timer for the processor; and read the results from the timing register during processing of a second instruction and store the results in a second general purpose register, wherein the second instruction is the next consecutive instruction after the first instruction. The inline thread sequence may be inserted in sequence with the thread and further configured to compare the difference between the result in the first and second general purpose register to a programmable threshold.
    Type: Application
    Filed: December 21, 2017
    Publication date: June 27, 2019
    Inventors: Omesh Bajaj, Kevin Barnett, Debapriya Chatterjee, Bryant Cockcroft, Jamory Hawkins, Lance G. Hehenberger, Jeffrey Kellington, Paul Lecocq, Lawrence Leitner, Tharunachalam Pindicura, John A. Schumann, Paul K. Umbarger, Karen Yokum