Methods and apparatus for detecting a side channel attack using hardware performance counters

    公开(公告)号:US11188643B2

    公开(公告)日:2021-11-30

    申请号:US16234144

    申请日:2018-12-27

    Abstract: Methods, apparatus, systems and articles of manufacture for detecting a side channel attack using hardware performance counters are disclosed. An example apparatus includes a hardware performance counter data organizer to collect a first value of a hardware performance counter at a first time and a second value of the hardware performance counter at a second time. A machine learning model processor is to apply a machine learning model to predict a third value corresponding to the second time. An error vector generator is to generate an error vector representing a difference between the second value and the third value. An error vector analyzer is to determine a probability of the error vector indicating an anomaly. An anomaly detection orchestrator is to, in response to the probability satisfying a threshold, cause the performance of a responsive action to mitigate the side channel anomaly.

    Methods, systems, and articles of manufacture to perform heterogeneous data structure selection via programmer annotations

    公开(公告)号:US11188324B2

    公开(公告)日:2021-11-30

    申请号:US16725928

    申请日:2019-12-23

    Abstract: Methods, apparatus, systems, and articles of manufacture to perform heterogeneous data structure selection via programmer annotations. An example apparatus includes a phase tracker to identify a first phase and a second phase, a cost predictor to estimate interaction costs of interacting with respective types of data structures within the first phase and the second phase, a tree constructor to construct a tree corresponding to a first data structure type, the tree including a first node in the first phase, a second node in the second phase, and an edge connecting the first node and the second node, the second node representing a second data structure type different from the first data structure type, a transformation cost calculator to calculate a transformation cost for the edge, and a branch selector to select a sequence of data structures based on the combined interaction costs and transformation costs.

    METHODS AND APPARTUS TO CONSTRUCT PROGRAM-DERIVED SEMANTIC GRAPHS

    公开(公告)号:US20210117807A1

    公开(公告)日:2021-04-22

    申请号:US17133168

    申请日:2020-12-23

    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to construct and compare program-derived semantic graphs comprising a leaf node creator to identify a first set of nodes within a parse tree, set a first abstraction level of a program-derived semantic graph (PSG) to contain the first set of nodes, an abstraction level determiner to access a second set of nodes, the second set of nodes to include the set of nodes in the PSG, create a third set of nodes, the third set of nodes to include the set of possible nodes at an abstraction level, determine whether the abstraction level is deterministic, a rule-based abstraction level creator to in response to determining the abstraction level is deterministic, construct the abstraction level, and a PSG comparator to access a first PSG and a second PSG, determine if the first PSG and the second PSG satisfy a similarity threshold.

    Methods and apparatus for runtime multi-scheduling of software executing on a heterogeneous system

    公开(公告)号:US10908884B2

    公开(公告)日:2021-02-02

    申请号:US16455379

    申请日:2019-06-27

    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for runtime scheduling of software executing on a heterogeneous system. An example apparatus includes in response to a variant compiler to generate a representation of an algorithm in a domain-specific language (DSL), a compilation auto-scheduler to generate a schedule based on configurations for processing elements of the heterogeneous system, the processing elements including at least a first and a second processing element, the variant compiler to compile variant binaries based on the schedule, each of the variant binaries associated with the algorithm in the DSL, the variant binaries including a first variant binary corresponding to the first processing element and a second variant binary corresponding to the second processing element, and an application compiler to generate a fat binary including a runtime scheduler to select one or more of the variant binaries to execute a workload based on the schedule.

    METHODS AND APPARATUS TO OPTIMIZE EXECUTION OF A MACHINE LEARNING MODEL

    公开(公告)号:US20190325314A1

    公开(公告)日:2019-10-24

    申请号:US16456863

    申请日:2019-06-28

    Abstract: Methods, apparatus, systems and articles of manufacture to optimize execution of a machine learning model are disclosed. An example apparatus includes a quantizer to quantize a layer of a model based on an execution constraint, the layer of the model represented by a matrix. A packer is to pack the quantized layer of the matrix to create a packed layer represented by a packed matrix, the packed matrix having non-zero values of the matrix grouped together along at least one of a row or a column of the matrix. A blocker is to block the packed layer into a blocked layer by dividing the non-zero values in the packed matrix into blocks. A fuser is to fuse the blocked layer into a pipeline. A packager is to package the pipeline into a binary.

    METHODS AND APPARATUS FOR RUNTIME MULTI-SCHEDULING OF SOFTWARE EXECUTING ON A HETEROGENEOUS SYSTEM

    公开(公告)号:US20190317740A1

    公开(公告)日:2019-10-17

    申请号:US16455379

    申请日:2019-06-27

    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for runtime scheduling of software executing on a heterogeneous system. An example apparatus includes in response to a variant compiler to generate a representation of an algorithm in a domain-specific language (DSL), a compilation auto-scheduler to generate a schedule based on configurations for processing elements of the heterogeneous system, the processing elements including at least a first and a second processing element, the variant compiler to compile variant binaries based on the schedule, each of the variant binaries associated with the algorithm in the DSL, the variant binaries including a first variant binary corresponding to the first processing element and a second variant binary corresponding to the second processing element, and an application compiler to generate a fat binary including a runtime scheduler to select one or more of the variant binaries to execute a workload based on the schedule.

    Automatic Robot Perception Programming by Imitation Learning

    公开(公告)号:US20190314984A1

    公开(公告)日:2019-10-17

    申请号:US16455190

    申请日:2019-06-27

    Abstract: Apparatus, systems, methods, and articles of manufacture for automatic robot perception programming by imitation learning are disclosed. An example apparatus includes a percept mapper to identify a first percept and a second percept from data gathered from a demonstration of a task and an entropy encoder to calculate a first saliency of the first percept and a second saliency of the second percept. The example apparatus also includes a trajectory mapper to map a trajectory based on the first percept and the second percept, the first percept skewed based on the first saliency, the second percept skewed based on the second saliency. In addition, the example apparatus includes a probabilistic encoder to determine a plurality of variations of the trajectory and create a collection of trajectories including the trajectory and the variations of the trajectory. The example apparatus also includes an assemble network to imitate an action based on a first simulated signal from a first neural network of a first modality and a second simulated signal from a second neural network of a second modality, the action representative of a perceptual skill.

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