Patents by Inventor Charles R. Johns

Charles R. Johns 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: 11200168
    Abstract: An approach is disclosed that caches distant memories within the storage a local node. The approach provides a memory caching infrastructure that supports virtual addressing by utilizing memory in the local node as a cache of distant memories for data granules. The data granules are accessed along with metadata and an ECC associated with the data granule. The metadata is updated to indicate storage of the selected data granule in the cache.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: December 14, 2021
    Assignee: International Business Machines Corporation
    Inventors: Charles R. Johns, Jose R. Brunheroto
  • Patent number: 11144231
    Abstract: An approach is disclosed that relocates a named data element. A request to move a name corresponding to the named data element is received from a first storage area in a Coordination Namespace to a second storage area in the Coordination Namespace. The first storage area has a first level of persistence, and the second storage area has a second level of persistence. The named data element exists in a Coordination Namespace that is allocated in a memory distributed amongst a plurality of nodes that include the local node and one or more remote nodes. The approach then creates a copy of the named data element in the second storage area.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: October 12, 2021
    Assignee: International Business Machines Corporation
    Inventors: Ravi Nair, Charles R. Johns, James A. Kahle, Constantinos Evangelinos
  • Patent number: 11016908
    Abstract: An approach is described that provides a distributed directory structure within a storage of an information handling system (a local node). A request is received with the request corresponding to a shared virtual address. The shared virtual address that is shared amongst a number of nodes that includes the local node and some remote nodes. A Global Address Space Directory (GASD) is retrieved that corresponds to a global virtual address space. The GASD is stored in a Coordination Namespace that is stored in a memory that is distributed amongst the nodes. A mapping that is included in the GASD is used to determine the node where the shared virtual address currently resides. The shared virtual address is then accessed from the node where it currently resides.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: May 25, 2021
    Assignee: International Business Machines Corporation
    Inventors: Charles R. Johns, James A. Kahle, James C. Sexton, Ravi Nair
  • Patent number: 10915460
    Abstract: An approach is described that accesses data in a shared memory that is shared amongst nodes that include a local node and remote nodes. The local node receives a name corresponding to a named data element in a Coordination Namespace, the Coordination Namespace having been created in a memory distributed amongst the nodes. A hash function is applied to at least a portion of the name with a result of the hash function being a natural node indicator. Data corresponding to the named data element is requested from a natural node identified by the indicator. Based on the request, a response is received from the natural node.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: February 9, 2021
    Assignee: International Business Machines Corporation
    Inventors: Ravi Nair, Charles R. Johns, James A. Kahle, Changhoan Kim, Jose R. Brunheroto, Constantinos Evangelinos, Abdullah Kayi, Patrick D. Siegl
  • Publication number: 20200364094
    Abstract: An approach is disclosed that configures a computer system node from components that are each connected to an intra-node network. The configuring is performed by selecting a set of components, including at least one processor, and assigning each of the components a different address range within the node. An operating system is run on the processor included in the node with the operating system accessing each of the assigned components.
    Type: Application
    Filed: June 12, 2020
    Publication date: November 19, 2020
    Inventors: James A. Kahle, Charles R. Johns, Constantinos Evangelinos, Abdullah Kayi
  • Patent number: 10831537
    Abstract: A computer system includes a processor, main memory, and controller. The processor includes a plurality of hardware threads configured to execute a plurality of software threads. The main memory includes a first register table configured to contain a current set of architected registers for the currently running software threads. The controller is configured to change a first number of the architected registers assigned to a given one of the software threads to a second number of architected registers when a result of monitoring current usage of the registers by the software threads indicates that the change will improve performance of the computer system. The processor includes a second register table configured to contain a subset of the architected registers and a mapping table for each software thread indicating whether the architected registers referenced by the corresponding software thread are located in the first register table or the second register table.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: November 10, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Harold W. Cain, III, Hubertus Franke, Charles R. Johns, Hung Q. Le, Ravi Nair
  • Patent number: 10831663
    Abstract: An approach is disclosed that tracks memory transactions by a node. The approach establishes a transaction processing state corresponding to common virtual addresses accessed by a processing threads. Transactions are executed by the threads. A selected transaction is allowed to complete. In response to detecting a conflict in the transaction processing state, completion of a non-selected transaction is inhibited.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: November 10, 2020
    Assignee: International Business Machines Corporation
    Inventors: James A. Kahle, Charles R. Johns
  • Publication number: 20200195718
    Abstract: An approach is described that coordinates workflow between nodes that include a local node and remote nodes. A location suggestion is received at a provider application. The location suggestion corresponds to a preferred node from the group of nodes where a named data element should be stored. The named data element is stored in a Coordination Namespace that is stored in a memory that is distributed amongst the various nodes. The provider application creates a data corresponding to the named data element.
    Type: Application
    Filed: December 12, 2018
    Publication date: June 18, 2020
    Inventors: Ravi Nair, Charles R. Johns, James A. Kahle, Constantinos Evangelinos
  • Publication number: 20200192820
    Abstract: An approach is described that provides access to a named data element in a Coordination Namespace that is stored in a memory that is distributed amongst a set of nodes. A request of a name corresponding to the named data element is received from a requesting process and the approach responsively searches for the name in the Coordination Namespace. In response to determining an absence of data corresponding to the named data element, a pending state is indicated to the requesting process. In response to determining that the data corresponding to the named data element exists, a successful state is returned to the requesting process. In one embodiment, the successful state also includes providing the requesting process with access to the data corresponding to the named data element.
    Type: Application
    Filed: December 12, 2018
    Publication date: June 18, 2020
    Inventors: Ravi Nair, Charles R. Johns, James A. Kahle, Changhoan Kim, Constantinos Evangelinos, Patrick D. Siegl
  • Publication number: 20200192819
    Abstract: An approach is described that accesses data in a shared memory that is shared amongst nodes that include a local node and remote nodes. The local node receives a name corresponding to a named data element in a Coordination Namespace, the Coordination Namespace having been created in a memory distributed amongst the nodes. A hash function is applied to at least a portion of the name with a result of the hash function being a natural node indicator. Data corresponding to the named data element is requested from a natural node identified by the indicator. Based on the request, a response is received from the natural node.
    Type: Application
    Filed: December 12, 2018
    Publication date: June 18, 2020
    Inventors: Ravi Nair, Charles R. Johns, James A. Kahle, Changhoan Kim, Jose R. Brunheroto, Constantinos Evangelinos, Abdullah Kayi, Patrick D. Siegl
  • Publication number: 20200192799
    Abstract: An approach is disclosed that maintains a consistent view of a virtual address by a local node which writes a first value to the virtual address and, after writing the first value, establishes a snapshot consistency state of the virtual address. The virtual address is shared amongst any number of processes and the processes includes a writing process and other processes that read from the virtual address. After writing the first value, the writing process writes a second value to the virtual address. Even after writing the second value, the first value is still visible to the other processes.
    Type: Application
    Filed: December 12, 2018
    Publication date: June 18, 2020
    Inventors: Charles R. Johns, James A. Kahle, Martin Ohmacht, Changhoan Kim, Jose R. Brunheroto, Constantinos Evangelinos, Abdullah Kayi, Alessandro Morari, James C. Sexton, Patrick D. Siegl
  • Publication number: 20200192576
    Abstract: An approach is disclosed that relocates a named data element. A request to move a name corresponding to the named data element is received from a first storage area in a Coordination Namespace to a second storage area in the Coordination Namespace. The first storage area has a first level of persistence, and the second storage area has a second level of persistence. The named data element exists in a Coordination Namespace that is allocated in a memory distributed amongst a plurality of nodes that include the local node and one or more remote nodes. The approach then creates a copy of the named data element in the second storage area.
    Type: Application
    Filed: December 12, 2018
    Publication date: June 18, 2020
    Inventors: Ravi Nair, Charles R. Johns, James A. Kahle, Constantinos Evangelinos
  • Patent number: 10684958
    Abstract: An approach is disclosed that locates a named data element by a local node. A name corresponding to the named data element is received, the named data element exists in a Coordination Namespace allocated in a memory area that is distributed amongst a set of nodes that include the local node and remote nodes. A predicted node identifier is received and then the named data element is requested from the predicted node based on the predicted node identifier.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: June 16, 2020
    Assignee: International Business Machines Corporation
    Inventors: Ravi Nair, Charles R. Johns
  • Publication number: 20200183842
    Abstract: An approach is disclosed that tracks memory transactions by a node. The approach establishes a transaction processing state corresponding to common virtual addresses accessed by a processing threads. Transactions are executed by the threads. A selected transaction is allowed to complete. In response to detecting a conflict in the transaction processing state, completion of a non-selected transaction is inhibited.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 11, 2020
    Inventors: James A. Kahle, Charles R. Johns
  • Publication number: 20200183854
    Abstract: An approach is disclosed that identifies a home node of a data granule. The process is performed by an information handling system (a local node) that retrieves a global virtual address directory. The global virtual address directory maps shared virtual addresses to a number nodes that includes the local node with one of the nodes being the home node. The shared virtual addresses correspond to a plurality of memory addresses that are stored in a shared virtual memory that is shared amongst the plurality of nodes. The approach receives a selected shared virtual address, retrieves, from the global virtual address directory, the home node associated with the selected shared virtual address, and accesses the data granule corresponding to the selected shared virtual address from the home node.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 11, 2020
    Inventors: Charles R. Johns, Jose R. Brunheroto
  • Publication number: 20200183836
    Abstract: An approach is disclosed that maintains a status of a data granule. A local node maintains the status by tracking a set of state information associated with the data granule using a system memory metadata. The state information indicates whether the data granule that is associated with a block of memory is currently stored in a physical address on the local node. An interrupt is generated in response to detecting an access of the data granule when the data granule associated with the block of memory is not stored at the physical address on the local node.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 11, 2020
    Inventors: Charles R. Johns, Jose R. Brunheroto
  • Publication number: 20200183857
    Abstract: An approach is disclosed that locates a named data element by a local node. A name corresponding to the named data element is received, the named data element exists in a Coordination Namespace allocated in a memory area that is distributed amongst a set of nodes that include the local node and remote nodes. A predicted node identifier is received and then the named data element is requested from the predicted node based on the predicted node identifier.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 11, 2020
    Inventors: Ravi Nair, Charles R. Johns
  • Publication number: 20200183840
    Abstract: An approach is disclosed that caches distant memories within the storage a local node. The approach provides a memory caching infrastructure that supports virtual addressing by utilizing memory in the local node as a cache of distant memories for data granules. The data granules are accessed along with metadata and an ECC associated with the data granule. The metadata is updated to indicate storage of the selected data granule in the cache.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 11, 2020
    Inventors: Charles R. Johns, Jose R. Brunheroto
  • Publication number: 20200183859
    Abstract: An approach is described that provides a distributed directory structure within a storage of an information handling system (a local node). A request is received with the request corresponding to a shared virtual address. The shared virtual address that is shared amongst a number of nodes that includes the local node and some remote nodes. A Global Address Space Directory (GASD) is retrieved that corresponds to a global virtual address space. The GASD is stored in a Coordination Namespace that is stored in a memory that is distributed amongst the nodes. A mapping that is included in the GASD is used to determine the node where the shared virtual address currently resides. The shared virtual address is then accessed from the node where it currently resides.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 11, 2020
    Inventors: Charles R. Johns, James A. Kahle, James C. Sexton, Ravi Nair
  • Publication number: 20200183904
    Abstract: An approach is disclosed that provides communication between applications running on different nodes (a local node and remote nodes). The approach receives subscription requests from subscriber applications that reference a name that corresponds to a named data element. The named data element is stored in a Coordination Namespace that is distributed amongst the nodes. A number of version named data elements are generated and the approach communicates the availability of the version named data elements to the subscriber applications based on a criteria included in the subscription requests.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 11, 2020
    Inventors: Ravi Nair, Charles R. Johns, James A. Kahle