Patents by Inventor Bjørn Dag Johnsen

Bjørn Dag Johnsen 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).

  • System and method for supporting partitioned switch forwarding tables in a high performance computing environment
    Patent number: 10348649
    Abstract: System and method for supporting a partitioned switch forwarding table in a high performance computing environment. Described methods and systems can support partitioned switch forwarding tables (e.g., partitioned LFTs) by setting up hardware registers that divide the LFT into at least two partitions, a first partition that supports legacy forwarding (e.g., standard LID based forwarding without the need to use portions of the GRH), and a second partition to support the GRH based forwarding that is described above. In such a manner, switches and other hardware within a core fabric can behave as legacy nodes/switches having standard LFTs, while also being able to support the extended addressing supplied through the use of portions of the GRH.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: July 9, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Bjørn Dag Johnsen, Arvind Srinivasan, Shimon Muller
  • System and method for supporting flexible framework for extendable SMA attributes in a high performance computing environment
    Patent number: 10348645
    Abstract: System and method for supporting a flexible framework for extendable SMA attributes in a high performance computing environment. In accordance with an embodiment, an information attribute can provide for enhancements in a number of areas. For example, in addition to indicating which version of an interface a queried node supports, the information attribute can additionally provide a mask indicating which vendor specific SMA attributes the node supports. In this way, a subnet manager can identify a version of an interface at each node in a subnet, as well as each node's SMA attribute capabilities. In turn, this allows nodes to run different versions of an interface within a same subnet, without introducing confusion.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: July 9, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Line Holen, Dag Georg Moxnes, Bjørn Dag Johnsen
  • System and method for supporting proxy based multicast forwarding in a high performance computing environment
    Patent number: 10348847
    Abstract: System and method for supporting proxy based multicast forwarding in a high performance computing environment. In accordance with an embodiment, a proxy based multicast forwarding system and method can be utilized. A proxy, either software, firmware, or hardware based, can be initialized and run within a local subnet domain, wherein the proxy is a member of at least one multicast group (MCG). The proxy can be configured to forward packets to other subnet domains in several different methods.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: July 9, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Bjørn Dag Johnsen, Arvind Srinivasan, Bartosz Bogdanski
  • SYSTEM AND METHOD FOR SUPPORTING ROUTER SMA ABSTRACTIONS FOR SMP CONNECTIVITY CHECKS ACROSS VIRTUAL ROUTER PORTS IN A HIGH PERFORMANCE COMPUTING ENVIRONMENT
    Publication number: 20190199630
    Abstract: Systems and methods for supporting SMP connectivity checks across virtual router in a high performance computing environment. In accordance with an embodiment, SMA model enhancements allow for the possibility to send a packet (i.e., SMP) that is addressed to a local router port. The SMA where the packet is addressed can receive the packet, and then apply a new attribute that defines that the requested information is on a remote node (e.g., connected by a physical link across subnets). In accordance with an embodiment, the SMA can operate as a proxy (receives a SMP and sends another request), or the SMA can modify the original packet and send it on as an inter-subnet packet.
    Type: Application
    Filed: March 4, 2019
    Publication date: June 27, 2019
    Inventors: Line Holen, Bjørn Dag Johnsen, Bartosz Bogdanski
  • System and method for initiating a forced migration of a virtual machine in a high-performance computing environment
    Patent number: 10334074
    Abstract: Systems and methods for initiating a forced migration of a virtual machine. An exemplary embodiment can provide a subnet manager (SM) and an active virtual machine registration cache, where the subnet manager can access the active virtual machine registration cache. The SM can record a first virtual machine incarnation number in the active virtual machine registration cache, where the virtual machine incarnation number is associated with an active virtual machine (VM). Upon receiving a request to register the active VM on a different host, the SM can evaluate a second virtual machine incarnation number with the first virtual machine incarnation number to determine the legality of the request. In accordance with an embodiment, if the second virtual machine incarnation number is evaluated as greater than the first virtual machine incarnation number, the SM determines the request is legal.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: June 25, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Harald Høeg, Bjørn Dag Johnsen
  • System and method for supporting SMA level abstractions at router ports for GRH to LRH mapping tables in a high performance computing environment
    Patent number: 10333841
    Abstract: Systems and methods for supporting SMA level abstractions at router ports for GRH to LRH mapping tables in a high performance computing environment. Ingress port mapping of GRH to new LRH can be reduced to minimally include DGID to DLID mapping. By further reducing the complexity by assuming all packets received at a subnet are addressed to a correct subnet (and also taking into account that correct subnet destination can be checked independently of the individual mapping entries), the DGID address can be simplified to a DGUID address, allowing for additional mappings within a same memory size.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: June 25, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Bjørn Dag Johnsen, Bartosz Bogdański, Line Holen, Prabhunandan Narasimhamurthy
  • System and method for supporting flexible forwarding domain boundaries in a high performance computing environment
    Patent number: 10333894
    Abstract: System and method for supporting flexible forwarding domain boundaries in a high performance computing environment. In accordance with an embodiment, flexible forwarding domain boundaries can be supported by dividing/partitioning a physical switch into two or more logical switches, where each switch is logically in a different domain, and allowing a fabric to be decomposed into independent subnets with one two or more physical end ports at the physical switch. By doing so, the same hierarchical forwarding structure and management structure between subnets can be provided as when complete physical switches are used as building blocks.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: June 25, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Bjørn Dag Johnsen, Arvind Srinivasan, Shimon Muller
  • System and method for defining virtual machine fabric profiles of virtual machines in a high-performance computing environment
    Patent number: 10326860
    Abstract: Systems and methods for defining virtual machine fabric profiles of virtual machines. An exemplary embodiment can provide a virtual machine identifier, a virtual host channel adapter instance ID, and a virtual globally unique identifier. The virtual machine identifier, virtual host channel adapter instance ID, and virtual globally unique identifier can be mapped to each other so that the virtual host channel adapter instance ID, and virtual globally unique identifier can be retrieved through access to the virtual machine identifier. Further, a relationship can be created between a P_Key that defines an admin partition and the virtual globally unique identifier, where the relationship between the P_Key and the virtual globally unique identifier defines the virtual globally unique identifier as a member of the admin partition defined by the P_Key.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: June 18, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Bjørn Dag Johnsen, Harald Høeg, Line Holen
  • System and method for supporting unique multicast forwarding across multiple subnets in a high performance computing environment
    Patent number: 10320668
    Abstract: Systems and methods for supporting unique multicast forwarding across multiple connected subnets in a high performance computing environment. In accordance with an embodiment, by enforcing that incoming (i.e., incoming on a router port of a subnet) multicast packets have SGIDs (source global identifiers) that correspond to a restricted set of source subnet numbers when entering the ingress router ports to a local subnet, it is possible to ensure that multicast packets sent from one subnet are never returned to the same subnet through a different set of connected router ports (i.e., avoid looping multicast packets).
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: June 11, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Bjørn Dag Johnsen, Bartosz Bogdański, Line Holen
  • SYSTEM AND METHOD FOR SUPPORTING RESOURCE QUOTAS FOR INTRA AND INTER SUBNET MULTICAST MEMBERSHIP IN A HIGH PERFORMANCE COMPUTING ENVIRONMENT
    Publication number: 20190173786
    Abstract: Systems and methods for supporting resource quotas for multicast group creation and membership in a high performance computing environment. In accordance with an embodiment, multicast group membership can present an issue in that inter-subnet partitions can, if left unchecked, runaway with multicast group creation within any given connected subnet. This can starve address map resources at router ports. A quota can be supplied that provides a maximum number of multicast groups any given inter-subnet partition is allowed to create within any given subnet.
    Type: Application
    Filed: February 6, 2019
    Publication date: June 6, 2019
    Inventors: Bjørn Dag Johnsen, Bartosz Bogdanski, Line Holen
  • SYSTEM AND METHOD FOR EFFICIENT VIRTUALIZATION IN LOSSLESS INTERCONNECTION NETWORKS
    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
  • SYSTEM AND METHOD FOR SUPPORTING A SCALABLE REPRESENTATION OF LINK STABILITY AND AVAILABILITY IN A HIGH PERFORMANCE COMPUTING ENVIRONMENT
    Publication number: 20190173808
    Abstract: System and method for supporting scalable representation of link stability and availability in a high performance computing environment. A method can provide at attribute at each node in a subnet, wherein the attribute provides a single location at each node for a subnet manager to query the stability and availability of each link connected to the queried node. The attribute can be populated and maintained by a subnet management agent residing at the node.
    Type: Application
    Filed: January 30, 2019
    Publication date: June 6, 2019
    Inventors: Bjørn Dag Johnsen, Dag Georg Moxnes, Line Holen
  • System and method for providing an infiniband network device having a vendor-specific attribute that contains a signature of the vendor in a high-performance computing environment
    Patent number: 10313272
    Abstract: System and method for providing an InfiniBand network device having a vendor-specific attribute that contains a signature of the vendor. An exemplary embodiment can provide an InfiniBand compatible network device from a vendor. The vendor can further define a subnet management attribute, where the subnet management attribute has an attribute identifier in the range of attribute identifiers reserved in the InfiniBand specification. The vendor can define a signature bit string that is a fixed number of bits in length and a number of offset bits, where the number of offset bits indicates the start of the signature bit string within the attribute. The subnet management attribute can be configured with the signature bit string starting where the offset bits indicate, and the subnet management attribute can be included as an attribute of the InfiniBand compatible network device.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: June 4, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Dag Georg Moxnes, Line Holen, Bjørn Dag Johnsen
  • SYSTEM AND METHOD FOR PROVIDING A DYNAMIC CLOUD WITH SUBNET ADMINISTRATION (SA) QUERY CACHING
    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
  • SYSTEM AND METHOD FOR ALLOWING MULTIPLE GLOBAL IDENTIFIER (GID) SUBNET PREFIX VALUES CONCURRENTLY FOR INCOMING PACKET PROCESSING IN A HIGH PERFORMANCE COMPUTING ENVIRONMENT
    Publication number: 20190158376
    Abstract: System and method for using multiple global identification subnet prefix values in a network switch environment in a high performance computing environment. A packet is received from a network fabric by a first Host Channel Adapter (HCA). The packet has a header portion including a destination subnet prefix identifying a destination subnet of the network fabric. The network HCA is allowed to receive the first packet from a port of the network HCA by selectively determining a logical state of a flag and, selectively in accordance with a predetermined logical state of the flag, ignoring the destination subnet prefix identifying the destination subnet of the network fabric.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 23, 2019
    Inventors: Bjørn Dag Johnsen, Arvind Srinivasan, Brian Manula
  • SYSTEM AND METHOD FOR EFFICIENT NETWORK ISOLATION AND LOAD BALANCING IN A MULTI-TENANT CLUSTER ENVIRONMENT
    Publication number: 20190149473
    Abstract: A system and method for supporting network isolation in a multi-tenant cluster environment. An exemplary method can support one or more tenants, and can associate each of the one or more tenants with a partition of a plurality of partitions, and can also associate each of the plurality of partitions with one or more nodes of a plurality of nodes, each of the plurality of nodes being associated with a leaf switch of a plurality of switches. The method can mark each of the plurality of partitions with a policy parameter. The method can assign each node of the plurality of nodes a partitioning order based on the marked on the partition associated with each node. Finally, the method can, based at least upon the marking of the partition of the plurality of partitions, generate one or more linear forwarding tables for use in the multi-tenant cluster environment.
    Type: Application
    Filed: December 20, 2018
    Publication date: May 16, 2019
    Inventors: Feroz Zahid, Ernst Gunnar Gran, Bartosz Bogdanski, Bjørn Dag Johnsen
  • SYSTEM AND METHOD FOR USING VIRTUAL MACHINE FABRIC PROFILES TO REDUCE VIRTUAL MACHINE DOWNTIME DURING MIGRATION IN A HIGH-PERFORMANCE COMPUTING ENVIRONMENT
    Publication number: 20190141166
    Abstract: Systems and methods for using a virtual machine fabric profiles to reduce virtual machine downtime during migration. An exemplary embodiment can provide a subnet manager (SM) and a virtual machine fabric profile that is accessible by the subnet manager, and where the virtual machine fabric profile includes a virtual host channel adapter (vHCA) configuration. The SM can receive a request to preregister the vHCA with a first physical host channel adapter (HCA) while the vHCA is already actively registered with a second physical HCA. The subnet manager can send the vHCA configuration to the first physical HCA for preregistration. After preregistration, the virtual link between the vHCA and a vSwitch of the first physical HCA can be left unestablished, until the SM determines that a virtual link between the vHCA and a vSwitch on the second physical HCA has been disconnected.
    Type: Application
    Filed: January 2, 2019
    Publication date: May 9, 2019
    Inventors: Bjørn Dag Johnsen, Harald Høeg, Line Holen
  • System and method for using Q_Key value enforcement as a flexible way of providing resource access control within a single partition in a high performance computing environment
    Patent number: 10284448
    Abstract: System and method providing resource access control within a single partition in a network switch environment in a high performance computing environment. A resource request portion of an IB packet includes data identifying a resource request for a requested resource, and a context identification portion of the packet includes data identifying a context of the resource request. Access rights to a controlled resource are determined based on the requested resource relative to the controlled resource and according to a comparison of the context of the resource request relative to one or more valid request context values. A resource table storing valid Q_Key and P_Key context values may be indexed by a Dest. QP of the packet header to determine selective access to the controlled resource and/or to data relating to the controlled resource.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: May 7, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Bjørn Dag Johnsen, Arvind Srinivasan, Brian Manula
  • SYSTEM AND METHOD FOR USING SUBNET PREFIX VALUES IN GLOBAL ROUTE HEADER (GRH) FOR LINEAR FORWARDING TABLE (LFT) LOOKUP IN A HIGH PERFORMANCE COMPUTING ENVIRONMENT
    Publication number: 20190123990
    Abstract: System and method for supporting intra- and inter-subnet address resolution in a network environment using the same linear forwarding tale (LFT) for both the intra- and inter-subnet forwarding. Subnet prefix values in global route headers (GRHs) are used for linear forwarding table (LFT) lookup in a high performance computing environments. An exemplary can provide for use of an Inter Subnet Route Number (ISRN) embedded in the subnet prefix values in the GRHs for LFT lookup in a network switch environment in a high performance computing environment such as a network having an InfiniBand (IB) architecture. A method can provide, at a computer environment, including a network fabric, one or more subnets, each of which subnets are associated with one or more network switches or hosts. The system and method is compatible with legacy switches and nodes that are not conversant with the ISRNs.
    Type: Application
    Filed: December 21, 2018
    Publication date: April 25, 2019
    Inventors: Bjørn Dag Johnsen, Arvind Srinivasan, Shimon Muller
  • System and method for using subnet prefix values in global route header (GRH) for linear forwarding table (LFT) lookup in a high performance computing environment
    Patent number: 10230607
    Abstract: System and method for supporting intra- and inter-subnet address resolution in a network environment using the same linear forwarding tale (LFT) for both the intra- and inter-subnet forwarding. Subnet prefix values in global route headers (GRHs) are used for linear forwarding table (LFT) lookup in a high performance computing environments. An exemplary can provide for use of an Inter Subnet Route Number (ISRN) embedded in the subnet prefix values in the GRHs for LFT lookup in a network switch environment in a high performance computing environment such as a network having an InfiniBand (IB) architecture. A method can provide, at a computer environment, including a network fabric, one or more subnets, each of which subnets are associated with one or more network switches or hosts. The system and method is compatible with legacy switches and nodes that are not conversant with the ISRNs.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: March 12, 2019
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Bjørn Dag Johnsen, Arvind Srinivasan, Shimon Muller