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    DETERMINING LIKELIHOODS OF COMPUTER SYSTEM STATE TRANSITIONS BASED ON STATE TRANSITION HISTORIES
    1.
    发明公开
    DETERMINING LIKELIHOODS OF COMPUTER SYSTEM STATE TRANSITIONS BASED ON STATE TRANSITION HISTORIES 审中-公开

    公开(公告)号：US20240281576A1

    公开(公告)日：2024-08-22

    申请号：US18169972

    申请日：2023-02-16

    Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

    Inventor： Debdipta Ghosh

    IPC: G06F30/27

    CPC classification number: G06F30/27 ,  G06F2111/08

    Abstract: A process includes accessing data representing a directed graph model state for a computer system. The directed graph includes a plurality of transitions among the model states, and the directed graph includes, for each transition, a transition identifier that is associated with the transition and a probability that is associated with the transition. The process includes characterizing a history of the computer system to reach a current state of the computer system. The current state corresponds to a given model state and the history corresponds to first transitions. Characterizing the history includes, based on the data, identifying first transition identifiers associated with the first transition, and applying a first arithmetic operator to the first transition identifier to provide a history identifier, which corresponds to the history. The process includes, based on the history identifier, determining a likelihood that the computer system will transition from the current state to a given future state; and based on the likelihood, initiating a responsive action in anticipation of the computer system transitioning to the given future state.

    Updating error policy
    2.
    发明授权
    Updating error policy 有权

    公开(公告)号：US11645156B1

    公开(公告)日：2023-05-09

    申请号：US17586909

    申请日：2022-01-28

    Applicant: Hewlett Packard Enterprise Development LP

    Inventor： Debdipta Ghosh

    IPC: G06F11/14

    CPC classification number: G06F11/1417

    Abstract: Approaches for updating an error policy based on boot-time error information and run-time error information, are described. The error policy maps an error type with a prescribed action. In an example, the error policy is updateable based run-time error information corresponding to a computing device. The updated error policy may then be used for addressing boot-time errors of computing devices.

    Secure data center update and monitoring
    4.
    发明授权
    Secure data center update and monitoring 有权

    公开(公告)号：US12105851B2

    公开(公告)日：2024-10-01

    申请号：US17486288

    申请日：2021-09-27

    Applicant: Hewlett Packard Enterprise Development LP

    Inventor： Debdipta Ghosh

    IPC: G06F21/64 ,  G06F8/65 ,  G06F21/55 ,  G06F21/56 ,  G06F21/60

    CPC classification number: G06F21/64 ,  G06F8/65 ,  G06F21/552 ,  G06F21/566 ,  G06F21/602

    Abstract: A system hash for each production system is generated. Each system hash includes a concatenation of a hardware hash and a software hash of each production system in the datacenter. A datacenter hash tree is created based on a combination of the system hashes. A test copy of the software hash of each of the production systems is created in respective test systems in the datacenter. In response to detecting a change in the datacenter hash tree, a modification in a system hash which resulted in the change is identified. The central copy of the software hash is compared with the test copy of the software hash. In response to a mismatch between the central copy and the test copy, occurrence of an unauthorized attack in a software of the production system is detected.

    Recording memory errors for use after restarts
    5.
    发明授权
    Recording memory errors for use after restarts 有权

    公开(公告)号：US11537468B1

    公开(公告)日：2022-12-27

    申请号：US17457679

    申请日：2021-12-06

    Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

    Inventor： Debdipta Ghosh ,  Renganathan Meenakshisundaram

    IPC: G06F11/10 ,  G06F11/07 ,  G06F11/30 ,  G06F11/14

    Abstract: In some examples, a system records, in a data structure stored in a non-volatile storage, information of memory errors in respective segments of a memory. The system determines whether memory errors of a subset of the segments satisfy a criterion, and in response to determining that the memory errors of the subset of the segments satisfy the criterion, the system groups the memory errors of the subset into a partition having a size greater than a size of a segment. The system records, in the data structure, information of memory errors in the partition, and in response to a restart of the system, retrieves the data structure from the non-volatile storage for use in an operation that addresses memory errors in the system.

    SECURE DATA CENTER UPDATE AND MONITORING
    7.
    发明申请
    SECURE DATA CENTER UPDATE AND MONITORING 有权

    公开(公告)号：US20230026057A1

    公开(公告)日：2023-01-26

    申请号：US17486288

    申请日：2021-09-27

    Applicant: Hewlett Packard Enterprise Development LP

    Inventor： Debdipta Ghosh

    IPC: G06F21/64 ,  G06F21/56 ,  G06F21/60 ,  G06F21/55 ,  G06F8/65

    Abstract: SECURE DATA CENTER UPDATE AND MONITORING A system hash for each production system is generated. Each system hash includes a concatenation of a hardware hash and a software hash of each production system in the datacenter. A datacenter hash tree is created based on a combination of the system hashes. A test copy of the software hash of each of the production systems is created in respective test systems in the datacenter. In response to detecting a change in the datacenter hash tree, a modification in a system hash which resulted in the change is identified. The central copy of the software hash is compared with the test copy of the software hash. In response to a mismatch between the central copy and the test copy, occurrence of an unauthorized attack in a software of the production system is detected.

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