Abstract: Various embodiments of the present technology generally relate to power topology discovery in industrial environments. More specifically, some embodiments relate to automatic power topology discovery for factories based on device data that is already recorded for other purposes. Systems and methods described herein may be used to generate an accurate electrical network topology by collecting power data from power devices that may provide real-time or recorded measurements, detecting power change events, and matching power change signatures over power events for the devices in order to calculate the likelihoods of possible topology assumptions. Power change event data is used to recursively update topology probabilities using the Bayesian formula until a system topology can be produced with satisfactory confidence.

Abstract: A method for securing the movement of virtual machines (VMs) between hosts. The method includes obtaining a first VM movement request; in response to obtaining the first VM movement request, identifying a first VM of the VMs and a first targeted host of the hosts associated with the first VM movement request using VM metadata and host metadata; making a first determination that the first targeted host is registered; in response to making the first determination, initiating the movement of the first VM to the first targeted host; and initiating, after the movement of the first VM, encryption of communication between the first VM and the first targeted host.

Abstract: The present disclosure generally relates to effective key management by properly matching keys used for encryption to data that needs to be decrypted after receiving instructions to change or delete keys. By matching the actual key, rather than just a key index, to a command, each command will use the correct key throughout the entire life-span of the command, even if the key is switched or deleted prior to servicing the command. To implement the key management, a snapshot of the doorbell database is taken. All pending commands that are in the snapshot are then fetched prior to updating a key database with either the change or deletion of the key. After fetching of all pending commands from the snapshot and ensuring the keys are stored in a command context, the key database is updated.

Abstract: A computer system with multiple security levels, the system comprising a high-power processing device (130), a low-power processing device (110), and an interface unit (120) comprising functions for moving classified information between the high-power device (130) and the low-power device (110) according to formal rules for confidentiality and/or integrity. Additional security aspects, e.g. availability, may readily be accommodated. A method for implementing multiple levels of security along a number of independent security axes on the system is also disclosed.

Abstract: Technologies are described herein for remotely configuring multi-mode dual in-line memory modules (“multi-mode DIMMs”) using a firmware or a baseboard management controller (“BMC”). Technologies are also described for simultaneously initiating multiple commands for configuring multi-mode DIMMs using a BMC and for updating inventory data regarding multi-mode DIMMs stored by a BMC.

Abstract: A fuse fault repair circuit includes a fuse array, a signal storage module, and a scan repair module. The fuse array includes a redundant fuse array and a non-redundant fuse array. When the fuse array is not faulty, the redundant fuse array has no signal output, and the non-redundant fuse array outputs S first logic signals. Each storage unit in the signal storage module is configured to store a first logic signal sent by one fuse unit connected thereto. The scan repair module is configured to scan the storage units in the signal storage module, determine, when a faulty storage unit is scanned, that a first fuse unit connected to the faulty storage unit is faulty, and replace the first fuse unit with a first redundant fuse unit corresponding to the first fuse unit. The first logic signal corresponding to the first redundant fuse unit is a normal signal.

Abstract: A system and method for offset protection data in a RAID array. A computer system comprises client computers and data storage arrays coupled to one another via a network. A data storage array utilizes solid-state drives and Flash memory cells for data storage. A storage controller within a data storage array is configured to store user data in a first page of a first storage device of the plurality of storage devices; generate intra-device protection data corresponding to the user data, and store the intra-device protection data at a first offset within the first page. The controller is further configured to generate inter-device protection data corresponding to the first page, and store the inter-device protection data at a second offset within a second page in a second storage device of the plurality of storage devices, wherein the first offset is different from the second offset.

Abstract: In a method disclosed for writing data, a device receives data, divides the data into one or more data fragments, obtains a first parity fragment based on the one or more data fragments and a second parity fragment of a written data fragment in a stripe distributed across a plurality of nodes, stores the one or more data fragments and the first parity fragment in the stripe.

Abstract: In one approach, a set of data blocks or files is tracked for changes between snapshots. This may be done by a file system filter running in kernel mode. The data blocks or files that are tagged as unchanged are not transferred to backup because there is no need to update since the last backup. Other data blocks and files may be first tested for change, for example by comparing digital fingerprints of the current data versus the previously backed up data, before transferring to backup.

Abstract: The present disclosure relates to a system and method for optimizing switching of a DRAM bus using LLC. An embodiment of the disclosure includes sending a first type request from a first type queue to the second memory via the memory bus if a direction setting of the memory bus is in a first direction corresponding to the first type request, decrementing a current direction credit count by a first type transaction decrement value, if the decremented current direction credit count is greater than zero, sending another first type request to the second memory via the memory bus and decrementing the current direction credit count again by the first type transaction decrement value, and if the decremented current direction credit count is zero, switching the direction setting of the memory bus to a second direction and resetting the current direction credit count to a second type initial value.

Abstract: Methods and systems for transferring a host image of a first machine to a second machine, such as during disaster recovery or migration, are disclosed. In one example, a first profile of a first machine of a first type is compared to a second profile of a second machine of a second type different from the first type, to which the host image is to be transferred. The first and second profiles each comprise at least one property of the first type of first machine and the second type of second machine, respectively. At least one property of a host image of the first machine is conformed to at least one corresponding property of the second machine. The conformed host image is provided to the second machine, via a network. The second machine is configured with at least one conformed property of the host image.

Abstract: Devices and techniques for efficient obfuscated logical-to-physical mapping are described herein. For example, activity corresponding to obfuscated regions of an L2P map for a memory device can be tracked. A record of discontinuity between the obfuscated regions and L2P mappings resulting from the activity can be updated. The obfuscated regions can be ordered based on a level of discontinuity from the record of discontinuity. When an idle period is identified, an obfuscated region from the obfuscated regions is selected and refreshed based on the ordering.

Abstract: An arithmetic processing device includes arithmetic processing units, each having a calculator unit; a scheduler that controls a push instruction to write data to a register file in one of the arithmetic processing units and a pull instruction to read data from the register file; a pull request bus to which the scheduler outputs a pull request and which is connected to the arithmetic processing units; a push request bus to which the scheduler outputs a push request and which is connected to the arithmetic processing units; and a pull data bus that inputs, into the scheduler, pull data read from the register file in response to the pull request. Each of the arithmetic processing units includes a pull data turn-back bus that propagates pull data read from its register file to the pull data bus.

Abstract: A method of operating a storage system is disclosed. The method includes determining a storage cluster among storage arrays of the storage system. Each storage array includes at least two controllers and at least one storage shelf. The at least two controllers are configured to function as both a primary controller for a first storage array and a secondary controller for a second storage array.

Abstract: Systems and methods provide techniques for spatially dynamic document retrieval. In one embodiments, a method includes determining a current spatial-temporal state for a mobile device associated with a target user profile; accessing a document object repository comprising a plurality of document objects, wherein each document object of the plurality of document objects comprises one or more contextual labels and one or more spatial labels; for each document object of the plurality of document objects, determining a spatial-temporal relevance score for the document object with respect to the target user profile based on the one or more contextual labels for the document object, the one or more spatial labels for the document object, and the current spatial-temporal state of the target user profile; and generating a spatially dynamic document prediction interface based on the spatial-temporal relevance score for each document object of the plurality of document objects.

Abstract: A remote data replication method and a storage system, where a production array sends a data replication request to a disaster recovery array. The data replication request includes an identifier of a source object and a data block corresponding to the source object. The data block is stored in physical space of a hard disk of the production array. The disaster recovery array receives the data replication request. The disaster recovery array creates a target object when the disaster recovery array does not include an object having a same identifier as the source object. An identifier of the target object is the same as the identifier of the source object, the disaster recovery array writes the data block into the physical space.

Abstract: Storage devices may be configured to desirably reduce the time required to perform a physical secure erase operation. The storage device includes a controller that is configured to direct the storage device to receive a physical secure erase command. The storage device can then identify the one or more blocks within the memory array for secure erasure based on the received physical secure erase command. For each block identified for erasure, the storage device further evaluates the block to determine the level type of cells within the block. In response to the cell level type being single-level, a single-cell erase command is issued to perform a single-level cell erase on the block. Conversely, in response to the cell level type being a higher-dimensional cell, a modified single-cell erase command to perform a modified single-level cell erase on the block is issued.

Abstract: A throttling engine throttles access to a high latency hybrid memory. A request is received for partition mapping of a virtual address for an R/W memory page. An entry is added to a partition page table that maps a virtual address to a physical address and comprises access information that is R/W. A throttled flag is set in an entry of a partition page extension table. The throttle entry corresponds to the entry. The access information is saved in an original access part of the partition page extension table, and the access information is replaced with an R value. Upon application fault receipt, a throttling test is performed on an address of the application fault. If the throttling test is false, the fault is passed through to an operating system fault handler and the throttling fault stage is ended, otherwise, a delay is implemented for slowing access to the memory.

Abstract: Some embodiments provide a method for identifying runtime complexity of a policy. The method receives, through a user interface (UI), a set of code defining a particular policy. For each variable in the particular policy, the method identifies a first occurrence of the variable in the particular policy to determine a number of values assigned to the variable. Variables determined to be assigned one value are separated from variables determined to be assigned more than one value. Based on the determinations for each variable, the method calculates a set of metrics that include at least time complexity, size complexity, and count complexity for the particular policy. The method then displays, through the UI, the calculated set of metrics along with a set of one or more suggestions for optimizing the particular policy based on the calculated set of metrics.

Abstract: Techniques are described for identifying patterns of memory cells in a memory array that are predictive of non-correctable errors (“corruption patterns”). The techniques described herein identify patterns of cell errors that are likely to generate errors that cannot be corrected by an error correction code (ECC). The identification of non-correctable cells is accomplished by identifying a pattern of cell errors storing bit values that deviate from corresponding expected values. The pattern of these memory cells and various combinations of the cells in the pattern are compared to patterns of cells that are known to be correctable using ECC. If the error pattern or one or more of the combinations of erroneous cells in the pattern are not associated with patterns that are correctable via ECC, the error pattern is identified as predictive of a likely uncorrectable error.

Abstract: Embodiments of the present disclosure provide a method and apparatus for generating a chip-based computing function, a device, and a storage medium. The method includes: acquiring an input parameter value associated with a computing function supported by a chip; determining, based on the input parameter value, at least one candidate computing function template corresponding to the computing function, the candidate computing function template having a configurable parameter associated with performance of the candidate computing function template, and the configurable parameter having at least one candidate value; and determining, according to the input parameter value and candidate values of the configurable parameter of the candidate computing function template, a target computing function template and a target value of a configurable parameter of the target computing function template.

Abstract: Embodiments of the present disclosure measure a state of a storage group within a storage array. The embodiments also increase or decrease a compression ratio corresponding to input/output (I/O) operations on the storage group based on a target data reduction ratio (DRR) of the storage array, an expected performance envelope, and a compressibility factor of the storage group.

Abstract: Embodiments described herein provide for extending media playback. In an example implementation, during playback of one or more first media items populated in a queue, a control system extends playback time of the queue. Extending playback time of the queue may involve determining when the one or more first media items will be finished playing; and before the first media items are finished playing, determining one or more second media items that correspond in substantial likeness to the one or more first media items and sending an instruction that causes the first playback device to insert the determined one or more second media items into the queue such that play time of the queue is extended.

Abstract: An apparatus of an aspect includes a plurality of cores and shared core extension logic coupled with each of the plurality of cores. The shared core extension logic has shared data processing logic that is shared by each of the plurality of cores. Instruction execution logic, for each of the cores, in response to a shared core extension call instruction, is to call the shared core extension logic. The call is to have data processing performed by the shared data processing logic on behalf of a corresponding core. Other apparatus, methods, and systems are also disclosed.

Abstract: A system is provided to receive a request to write data to a storage device, wherein the data is associated with a file name and a file path. The system performs a hash function on an input based on the file name and the file path to obtain a hash value, wherein the hash function comprises a plurality of hash methods performed on the input. The system maps the hash value to a physical location in the storage device, and writes the data to the physical location in the storage device.

Abstract: A controller includes: a command queue scheduler for queuing normal commands, and providing a priority order to a suspend command, when the suspend command is input; a data input/output component for outputting data in response to a data output signal output the command queue scheduler, and stopping the output of the data in response to a data output stop signal; and a data monitor for dividing data input to the data input/output component into a plurality of data groups, and monitoring information of a data group including data currently output from the data input/output component. The data input/output component outputs data up to the currently output data included in the data group and then stops the output of the data, in response to the data output stop signal. The command queue scheduler outputs the suspend command, when the output of the data group is stopped.

Abstract: One example method includes receiving a set of filesystem parameters, creating a simulated filesystem based on the filesystem parameters, receiving a set of target characteristics for a file collection, based on the target characteristics, slicing a datastream into a grouping of data slices, populating the simulated files with the data slices to create the file collection and forward or reverse morphing the file collection from one generation to another without rewriting the entire file collection.

Abstract: A method and a device for determining a strategy for data placement within an SSD are provided. The method for determining a strategy for data placement within a Solid State Drive SSD, includes acquiring an optimization target and workload metric data that is pre-collected for a time period; selecting a machine learning model and a training data strategy according to the optimization target; selecting feature data from the workload metric data for the time period according to the selected training data strategy, and training the selected machine learning model based on the selected feature data; determining, in each subsequent predicting time, a strategy for data placement for a predicting time period corresponding to the predicting time according to the workload metric data for the time period and the workload metric data that is collected in the predicting time by using the trained machine learning model.

Abstract: Transaction activity of a cache maintaining content may be monitored to determine periods of transaction activity below a first threshold amount of transactions. A period of anticipated transaction activity above a second threshold amount of transactions may be determined. A period of anticipated transaction activity below the first threshold may be selected based upon the monitored periods of transaction activity below the first threshold and the determined period of anticipated transaction activity above the second threshold. Content then may be evicted from the cache during the selected period of anticipated transaction activity.

Abstract: In an embodiment a method includes providing a table including a plurality of data records (R1 . . . Rn) corresponding to a plurality of profile data, providing a master profile including fields to be personalized (F1 . . . Fk . . . Fp) corresponding to one or more of the data records (R1 . . . Rn) to store the different types of personalization values (V1 . . . Vm), combining the one or more of the data records (R1 . . . Rn) in the table with the master profile by inserting the personalization values (V1 . . . Vm) in the fields to be personalized (F1 . . . Fk . . . Fp) to obtain respective personalized profile packages, coding the one or more of the data records (R1 . . . Rn) to obtain encoded data records (CRi), applying the coding to the offset table to obtain encoded data offset (COi) and combining for each record (Ri) the encoded data record (CRi) and the data offset (OCi) in an encoded personalization record (URi).

Abstract: A nonvolatile memory device includes a first pin that receives a first signal, a second pin that receives a second signal, third pins that receive third signals, a fourth pin that receives a write enable signal, a memory cell array, and a memory interface circuit that obtains a command, an address, and data from the third signals in a first mode and obtains the command and the address from the first signal and the second signal and the data from the third signals in a second mode. In the first mode, the memory interface circuit obtains the command from the third signals and obtains the address from the third signals. In the second mode, the memory interface circuit obtains the command from the first signal and the second signal and obtains the address from the first signal and the second signal.

Abstract: Systems and methods for network security are provided. Various embodiments of the present technology provide systems and methods for an identity security gateway agent that provides for privileged access. Embodiments include a system and method that uses a single sign-on (SSO) (or similar) mechanism to facilitate a user accessing web-based service providers, but separates the assertion and entire SSO process from the user credential.

Abstract: A memory device includes a memory array comprising a plurality of planes, a primary plane driver circuit comprising components to support read operations, program operations, and erase operations on any of the plurality of planes, and a secondary plane driver circuit comprising components to support read operations on an associated one of the plurality of planes. The primary plane driver circuit is configured to perform a first read operation on a first plane of the plurality of planes and the secondary plane driver circuit is configured to perform a second read operation on a second plane of the plurality of planes concurrently with the first read operation.

Abstract: Files can be managed to mitigate undesirable reading of files from secondary storage component (SSC) associated with a storage system comprising primary storage component (PSC). File management component (FMC) can determine file identifiers for files stored in SSC and store them in reference files associated with such files. FMC can determine file identifiers for files stored in PSC and store them in a file entry data store. In response to a client request, FMC can determine whether a local file stored in PSC is a copy of an archived file stored in SSC based on whether the respective file identifiers of the archived file and local file or snapshot of the local file match. If there is a suitable match, FMC can read the snapshot of the local file and provide it to client device; if not, FMC can read the archived file and provide it to client device.

Abstract: A unified cache subsystem includes a data memory configured as both a shared memory and a local cache memory. The unified cache subsystem processes different types of memory transactions using different data pathways. To process memory transactions that target shared memory, the unified cache subsystem includes a direct pathway to the data memory. To process memory transactions that do not target shared memory, the unified cache subsystem includes a tag processing pipeline configured to identify cache hits and cache misses. When the tag processing pipeline identifies a cache hit for a given memory transaction, the transaction is rerouted to the direct pathway to data memory. When the tag processing pipeline identifies a cache miss for a given memory transaction, the transaction is pushed into a first-in first-out (FIFO) until miss data is returned from external memory. The tag processing pipeline is also configured to process texture-oriented memory transactions.

Abstract: A cache management circuit that includes a predictive adjustment circuit configured to predictively generate cache control information based on a cache hit-miss indicator and the retention ranks of accessed cache lines to improve cache efficiency is disclosed. The predictive adjustment circuit stores the cache control information persistently, independent of whether the data remains in cache memory. The stored cache control information is indicative of prior cache access activity for data from a memory address, which is indicative of the data's “usefulness.” Based on the cache control information, the predictive adjustment circuit controls generation of retention ranks for data in the cache lines when the data is inserted, accessed, and evicted.

Abstract: Embodiments are disclosed for a method for dynamic access paths. The method includes generating real-time statistics (RTS) estimates based on a log of a database. Further, the method includes generating access paths based on a structured query language command and the RTS estimates. The method also includes training a machine learning model to map the RTS estimates to the access paths.

Abstract: A non-transitory computer-readable medium for sharing protected content, comprising instruction stored thereon. When executed on a processor, the instruction performs steps of deriving a shared secret, processing the shared secret using a secure hash algorithm 256 cryptographic hash to produce a primary encryption key, and encrypting a secondary encryption key using the primary encryption key. When the shared secret is derived between a private key and a public key of a first user, encrypting the protected content using the secondary encryption key, and transmitting the encrypted protected content to a server to be accessed by the second user. When the shared secret is derived between the private key of the first user and a public key of a second user, transmitting the secondary encryption key to the second user. The second user uses the secondary encryption key to decrypt the encrypted protected content on the server.

Abstract: A memory system, a memory controller and an operating method are disclosed. By dividing a read count table including read count values respectively for a plurality of memory blocks into one or more read count table segments each including one or more read count values of a resolution, and managing one or more flags respectively corresponding to the read count table segments, and set the flag corresponding to the read count table segment in which at least one read count value is changed among the read count table segments, it is possible to minimize additional operational costs required to recover the read count table upon occurrence of an SPO.

Abstract: Prior to an update of an operating system of a computing device, a configuration operation is performed with respect to a particular processor of the computing device, such that the particular processor is indicated to the operating system as being in an offline state while an application runs at the particular processor. The operating system is then updated. The update comprises a time interval in which the operating system is unavailable and the application performs one or more computations at the particular processor. After the update, the application is restarted.

Abstract: An integrated circuit (IC) card of an embodiment includes a communicator, a storage storing biometric authentication information, an acquirer, and a processor. The communicator communicates with a terminal device. The acquirer acquires biometric information of a user. The processor collates the biometric information of the user acquired by the acquirer with the biometric authentication information stored in the storage and stores a collation result into the storage at an activation time.

Abstract: A method of increasing operational life time of SSD RAID and a storage equipment using same, the method including: configuring a data storage device to have a plurality of storage areas, each storage area including a plurality of stripes, and each stripe including an individual block of a plurality of solid state disks, where at least one block in each stripe is a check bit block, the other blocks are data blocks; and configuring two neighboring stripes in each storage area to form a composite stripe according to a plurality of index combinations in a mapping table, where the composite stripe includes two neighboring blocks in each solid state disk, and the composite stripe is divided into a stripe writing area and an empty stripe area, so that each solid state disk in each storage area has a reserved space.

Abstract: An approach is provided for reducing command bus traffic between memory controllers and PIM-enabled memory modules using special PIM commands. The term “special PIM command” is used herein to describe embodiments and refers to a PIM command for which the corresponding module-specific command information is provided to memory modules via a non-command bus data path. A memory controller generates and issues a special PIM command to multiple PIM-enabled memory modules via a command bus and provides module-specific command information (e.g., address information) for the special PIM command to the PIM-enabled memory modules via the non-command bus data path that is shared by the PIM-enabled memory modules and the memory controller.

Abstract: Embodiments of the disclosure provide systems and methods for allocating memory space in a memory device. The system can include: a memory device for providing the memory space; and a compiler component configured for: receiving a request for allocating a data array having a plurality of data elements in the memory device, wherein each of the plurality of data elements has a logical address; generating an instruction for allocating memory space for the data array in the memory device based on the request; generating device addresses for the plurality of data elements in the memory device based on logical addresses of the plurality of data elements; and allocating the memory space for the data array in the memory device based on the device addresses and the instruction.

Abstract: Disclosed are a non-volatile memory device and a method of operating the non-volatile memory device. A non-volatile memory device in which m logical pages are stored in a single physical page includes: a plurality of registers configured to be included in a flash translation layer (FTL) and to store at least part of the data of a write command received from a file system; and a controller configured to control operations of the plurality of registers based on the write command; wherein each of the plurality of registers is further configured to have a storage space associated with the size of the m logical pages; and wherein the controller is further configured to program the data of the write command into the non-volatile memory device and to store the data of the write command in the plurality of registers.

Abstract: A method includes loading each section of an executable program code into a respective page of memory, configuring permissions for a first page including a first section of the executable program code to enable execution of the first section loaded into the first page. The first section associated with a first label. The method also includes configuring permissions for a second page of the memory including a second section of the executable program code to disable execution of the second section loaded into the second page. The second section associated with a second label. Responsive to a determination that a transition from the first section to the second section is allowed during execution of the executable program code, the method also includes changing the permissions of the second page to enable execution of the second section of the executable program code.

Abstract: A system, method, and machine-readable storage medium for analyzing a state of a data object are provided. In some embodiments, the method includes receiving, at a storage device, a metadata request for the data object from a client. The data object is composed of a plurality of segments. The method also includes selecting a subset of the plurality of segments and obtaining a segment state for each segment of the subset. Each segment state indicates whether the respective segment is accessible via a backing store. The method further includes determining a most restrictive state of the one or more segment states and sending state information to the client in response to the metadata request, the state information being derived from the most restrictive state.

Abstract: A virtual storage volume that includes storage space on potentially many different physical disks may be mounted at a compute node. In order to replicate the virtual storage volume to a target compute node, a sequence of snapshots may be created that capture the state of the virtual storage volume at a sequence of points in time. The data associated with these snapshots may be transferred to the target compute node. When the difference between the snapshots is sufficiently small, the target virtual storage volume may be resynchronized.

Abstract: A module with a functional unit for generating a data stream with a data output for outputting the data stream to a serialization unit provided for receiving a data stream from a serialization unit of a first series. A serialization unit of a second series is set up to serialize the data stream and output it through the data output, and a configuration data input receives configuration data defining a first register configuration of a serialization unit. A mapping of register addresses of the serialization unit of the first series to register addresses of the serialization unit of the second series can be stored in a data memory of the module. The configuration unit is set up to read in the configuration data, to use the mapping, and to configure the registers of the serialization unit of the second series according to the configuration of the second register.

Abstract: A method for data migration is provided. The method includes the following. A communication connection with a source migration terminal is established. A file list on the source migration terminal is acquired after the source migration terminal is accessed. First operations and second operations are executed in parallel. The first operations include reading out files on the source migration terminal according to the file list and storing the files read out on a migration terminal. The second operations include displaying the file list, receiving selection of a non-migrated file in the file list, and deleting the non-migrated file after the non-migrated file is migrated from the source migration terminal to the migration terminal and stored in the migration terminal. A terminal is further provided.