Patents by Inventor EVANGELOS TASOULAS

EVANGELOS TASOULAS 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).

  • Publication number: 20190173944
    Abstract: Systems and methods for supporting efficient virtualization in a lossless interconnection network. An exemplary method can provide, one or more switches, including at least a leaf switch, a plurality of host channel adapters, wherein each of the host channel adapters comprise at least one virtual function, at least one virtual switch, and at least one physical function, a plurality of hypervisors, and a plurality of virtual machines, wherein each of the plurality of virtual machines are associated with at least one virtual function. The method can arrange the plurality of host channel adapters with one or more of a virtual switch with prepopulated local identifiers (LIDs) architecture or a virtual switch with dynamic LID assignment architecture. The method can assign each of the virtual switches a pLID and each of the plurality of virtual machines a vLID.
    Type: Application
    Filed: February 6, 2019
    Publication date: June 6, 2019
    Inventors: Evangelos Tasoulas, Feroz Zahid, Bjørn Dag Johnsen, Ernst Gunnar Gran
  • Publication number: 20190163522
    Abstract: A system and method support can subnet management in a cloud environment. During a virtual machine migration in a cloud environment, a subnet manager can become a bottleneck point that delays efficient service. A system and method can alleviate this bottleneck point by ensuring a virtual machine retains a plurality of addresses after migration. The system and method can further allow for each host node within the cloud environment to be associated with a local cache that virtual machines can utilize when re-establishing communication with a migrated virtual machine.
    Type: Application
    Filed: January 30, 2019
    Publication date: May 30, 2019
    Inventors: Evangelos Tasoulas, Bjørn Dag Johnsen, Ernst Gunnar Gran
  • Patent number: 10230794
    Abstract: Systems and methods for supporting efficient virtualization in a lossless interconnection network. An exemplary method can provide, one or more switches, including at least a leaf switch, a plurality of host channel adapters, wherein each of the host channel adapters comprise at least one virtual function, at least one virtual switch, and at least one physical function, a plurality of hypervisors, and a plurality of virtual machines, wherein each of the plurality of virtual machines are associated with at least one virtual function. The method can arrange the plurality of host channel adapters with one or more of a virtual switch with prepopulated local identifiers (LIDs) architecture or a virtual switch with dynamic LID assignment architecture. The method can assign each of the virtual switches a pLID and each of the plurality of virtual machines a vLID.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: March 12, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Evangelos Tasoulas, Feroz Zahid, Bjørn Dag Johnsen, Ernst Gunnar Gran
  • Patent number: 10198288
    Abstract: A system and method support can subnet management in a cloud environment. During a virtual machine migration in a cloud environment, a subnet manager can become a bottleneck point that delays efficient service. A system and method can alleviate this bottleneck point by ensuring a virtual machine retains a plurality of addresses after migration. The system and method can further allow for each host node within the cloud environment to be associated with a local cache that virtual machines can utilize when re-establishing communication with a migrated virtual machine.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: February 5, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Evangelos Tasoulas, Bjørn Dag Johnsen, Ernst Gunnar Gran
  • Publication number: 20180351801
    Abstract: A hybrid reconfiguration scheme can allow for fast partial network reconfiguration with different routing algorithms of choice in different subparts of the network. Partial reconfigurations can be orders of magnitude faster than the initial full configuration, thus making it possible to consider performance-driven reconfigurations in lossless networks.
    Type: Application
    Filed: July 19, 2018
    Publication date: December 6, 2018
    Inventors: Evangelos Tasoulas, Ernst Gunnar Gran, Tor Skeie, Bjørn Dag Johnsen
  • Publication number: 20180337990
    Abstract: Systems and methods for supporting efficient virtualization in a lossless interconnection network. An exemplary method can provide, one or more switches, including at least a leaf switch, a plurality of host channel adapters, wherein each of the host channel adapters comprise at least one virtual function, at least one virtual switch, and at least one physical function, a plurality of hypervisors, and a plurality of virtual machines, wherein each of the plurality of virtual machines are associated with at least one virtual function. The method can arrange the plurality of host channel adapters with one or more of a virtual switch with prepopulated local identifiers (LIDs) architecture or a virtual switch with dynamic LID assignment architecture. The method can assign each virtual switch with a LID. The method can calculate one or more linear forwarding tables based at least upon the LIDs assigned to each of the virtual switches.
    Type: Application
    Filed: July 31, 2018
    Publication date: November 22, 2018
    Inventors: Evangelos Tasoulas, Feroz Zahid, Bjørn Dag Johnsen, Ernst Gunnar Gran
  • Patent number: 10097412
    Abstract: A hybrid reconfiguration scheme can allow for fast partial network reconfiguration with different routing algorithms of choice in different subparts of the network. Partial reconfigurations can be orders of magnitude faster than the initial full configuration, thus making it possible to consider performance-driven reconfigurations in lossless networks.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: October 9, 2018
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Evangelos Tasoulas, Ernst Gunnar Gran, Tor Skeie, Bjørn Dag Johnsen
  • Publication number: 20180285142
    Abstract: Systems and methods are provided for implementing a Virtual Switch (vSwitch) architecture that supports transparent virtualization and live migration. In an embodiment, a vSwitch with prepopulated Local Identifiers (LIDs). Another embodiment provides for vSwitch with dynamic LID assignment. Another embodiment provides for vSwitch with prepopulated LIDS and dynamic LID assignment Moreover, embodiments of the present invention provide scalable dynamic network reconfiguration methods which enable live migrations of VMs in network environments.
    Type: Application
    Filed: May 30, 2018
    Publication date: October 4, 2018
    Inventors: Bjørn Dag Johnsen, Evangelos Tasoulas, Ernst Gunnar Gran
  • Patent number: 10057119
    Abstract: A hybrid reconfiguration scheme can allow for fast partial network reconfiguration with different routing algorithms of choice in different subparts of the network. Partial reconfigurations can be orders of magnitude faster than the initial full configuration, thus making it possible to consider performance-driven reconfigurations in lossless networks.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: August 21, 2018
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Evangelos Tasoulas, Ernst Gunnar Gran, Tor Skeie, Bjørn Dag Johnsen
  • Patent number: 10051054
    Abstract: Systems and methods for supporting efficient virtualization in a lossless interconnection network. An exemplary method can provide, one or more switches, including at least a leaf switch, a plurality of host channel adapters, wherein each of the host channel adapters comprise at least one virtual function, at least one virtual switch, and at least one physical function, a plurality of hypervisors, and a plurality of virtual machines, wherein each of the plurality of virtual machines are associated with at least one virtual function. The method can arrange the plurality of host channel adapters with one or more of a virtual switch with prepopulated local identifiers (LIDs) architecture or a virtual switch with dynamic LID assignment architecture. The method can assign each virtual switch with a LID. The method can calculate one or more linear forwarding tables based at least upon the LIDs assigned to each of the virtual switches.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: August 14, 2018
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Evangelos Tasoulas, Feroz Zahid, Bjørn Dag Johnsen, Ernst Gunnar Gran
  • Publication number: 20180167274
    Abstract: A hybrid reconfiguration scheme can allow for fast partial network reconfiguration with different routing algorithms of choice in different subparts of the network. Partial reconfigurations can be orders of magnitude faster than the initial full configuration, thus making it possible to consider performance-driven reconfigurations in lossless networks.
    Type: Application
    Filed: February 7, 2018
    Publication date: June 14, 2018
    Inventors: Evangelos Tasoulas, Ernst Gunnar Gran, Tor Skeie, Bjørn Dag Johnsen
  • Patent number: 9990221
    Abstract: Systems and methods are provided for implementing a Virtual Switch (vSwitch) architecture that supports transparent virtualization and live migration. In an embodiment, a vSwitch with prepopulated Local Identifiers (LIDs). Another embodiment provides for vSwitch with dynamic LID assignment. Another embodiment provides for vSwitch with prepopulated LIDS and dynamic LID assignment Moreover, embodiments of the present invention provide scalable dynamic network reconfiguration methods which enable live migrations of VMs in network environments.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: June 5, 2018
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Evangelos Tasoulas, Bjørn Dag Johnsen, Ernst Gunnar Gran
  • Publication number: 20180062925
    Abstract: A hybrid reconfiguration scheme can allow for fast partial network reconfiguration with different routing algorithms of choice in different subparts of the network. Partial reconfigurations can be orders of magnitude faster than the initial full configuration, thus making it possible to consider performance-driven reconfigurations in lossless networks.
    Type: Application
    Filed: August 18, 2017
    Publication date: March 1, 2018
    Inventors: Evangelos Tasoulas, Ernst Gunnar Gran, Tor Skeie, Bjørn Dag Johnsen
  • Publication number: 20170149888
    Abstract: Systems and methods for supporting efficient virtualization in a lossless interconnection network. An exemplary method can provide, one or more switches, including at least a leaf switch, a plurality of host channel adapters, wherein each of the host channel adapters comprise at least one virtual function, at least one virtual switch, and at least one physical function, a plurality of hypervisors, and a plurality of virtual machines, wherein each of the plurality of virtual machines are associated with at least one virtual function. The method can arrange the plurality of host channel adapters with one or more of a virtual switch with prepopulated local identifiers (LIDs) architecture or a virtual switch with dynamic LID assignment architecture. The method can assign each virtual switch with a LID. The method can calculate one or more linear forwarding tables based at least upon the LIDs assigned to each of the virtual switches.
    Type: Application
    Filed: July 14, 2016
    Publication date: May 25, 2017
    Inventors: Evangelos Tasoulas, Feroz Zahid, Bjørn Dag Johnsen, Ernst Gunnar Gran
  • Publication number: 20170149887
    Abstract: Systems and methods for supporting efficient virtualization in a lossless interconnection network. An exemplary method can provide, one or more switches, including at least a leaf switch, a plurality of host channel adapters, wherein each of the host channel adapters comprise at least one virtual function, at least one virtual switch, and at least one physical function, a plurality of hypervisors, and a plurality of virtual machines, wherein each of the plurality of virtual machines are associated with at least one virtual function. The method can arrange the plurality of host channel adapters with one or more of a virtual switch with prepopulated local identifiers (LIDs) architecture or a virtual switch with dynamic LID assignment architecture. The method can assign each of the virtual switches a pLID and each of the plurality of virtual machines a vLID.
    Type: Application
    Filed: July 14, 2016
    Publication date: May 25, 2017
    Inventors: Evangelos Tasoulas, Feroz Zahid, Bjørn Dag Johnsen, Ernst Gunnar Gran
  • Publication number: 20160259661
    Abstract: Systems and methods are provided for implementing a Virtual Switch (vSwitch) architecture that supports transparent virtualization and live migration. In an embodiment, a vSwitch with prepopulated Local Identifiers (LIDs). Another embodiment provides for vSwitch with dynamic LID assignment. Another embodiment provides for vSwitch with prepopulated LIDS and dynamic LID assignment Moreover, embodiments of the present invention provide scalable dynamic network reconfiguration methods which enable live migrations of VMs in network environments.
    Type: Application
    Filed: February 23, 2016
    Publication date: September 8, 2016
    Inventors: Evangelos Tasoulas, Bjørn Dag Johnsen, Ernst Gunnar Gran
  • Publication number: 20160127495
    Abstract: A system and method support can subnet management in a cloud environment. During a virtual machine migration in a cloud environment, a subnet manager can become a bottleneck point that delays efficient service. A system and method can alleviate this bottleneck point by ensuring a virtual machine retains a plurality of addresses after migration. The system and method can further allow for each host node within the cloud environment to be associated with a local cache that virtual machines can utilize when re-establishing communication with a migrated virtual machine.
    Type: Application
    Filed: October 27, 2015
    Publication date: May 5, 2016
    Inventors: EVANGELOS TASOULAS, BJØRN DAG JOHNSEN, ERNST GUNNAR GRAN