Abstract: A method for managing a log structured merged (LSM) tree of key value (KV) pairs, the LSM tree is stored in a non-volatile memory, the method may include writing a current run from a buffer to a current run location within the LSM tree, the current run comprises current KV pairs; generating or receiving current fingerprints that are indicative of the current KV pairs; performing a run writing update of a management data structure (MDS) by adding to the MDS, mappings between the current KV pairs, the current fingerprints and a current run identifier; updating the LSM tree by merging at least some runs of the LSM tree; and performing a merge update of the MDS to represent the merging.

Abstract: A method of site-selective growth of a nanocrystal from an anisotropic seed can include immersing an anisotropic seed functionalized with a ligand in a growth solution having a nanocrystal precursor, a complexing agent, and a reducing agent to form a growth solution, wherein an amount of the reducing agent and/or any amount of the complexing agent is selected to define a supersaturation of the growth solution that is sufficient for overcoming an energy barrier of one or more selected regions of the functionalized seed to selectively growth the nanocrystal at the one or more selected regions.

Abstract: A method, computer program product, and computing system for determining an amount of data moved within a plurality of write input/output (IO) log structures of a storage system during a monitoring interval. A utilization value for each write IO log structure may be determined during the monitoring interval. Over-provisioning resources are allocated from the storage system to the plurality of write IO log structures based upon, at least in part, the amount of data moved within each write IO log structure and the utilization value for each write IO log structure.

Abstract: An append operation is provided for using a plurality of threads on a plurality of streaming multiprocessors of a graphical processing unit. The append operation writes results into a result buffer. Executing the append operation comprises claiming, by each given thread within the plurality of threads having a result to write, a portion of a selected WCB, writing, by the given thread, the result to the portion of the selected WCB, and in response to a flush condition being met for the selected WCB, copying contents of the selected WCB to a result buffer.

Abstract: Systems and methods for improving cache efficiency and utilization are disclosed. In one embodiment, a graphics processor includes processing resources to perform graphics operations and a cache controller of a cache memory that is coupled to the processing resources. The cache controller is configured to set an initial aging policy using an aging field based on age of cache lines within the cache memory and to determine whether a hint or an instruction to indicate a level of aging has been received. In one embodiment, the cache memory configured to be partitioned into multiple cache regions, wherein the multiple cache regions include a first cache region having a cache eviction policy with a configurable level of data persistence.

Abstract: Methods, systems, and devices for techniques for firmware enhancement in memory devices are described. A memory system may include a volatile memory device and a non-volatile memory device, which may store a node address mapping. A host system in communication with the memory system may transmit a command instructing the memory system to transfer at least a portion of the node address mapping from the non-volatile memory device to the volatile memory device. The memory system may transmit a response to the command to the host system indicating a status associated with transferring the portion of the node address mapping.

Abstract: Methods and systems for a networked storage system are provided. One method includes: generating, by a first node, a dummy entry in a storage location cache of the first node, the dummy entry associated with a read request received by the first node for data stored using a logical object owned by a second node; receiving, by the first node, an invalidation request to invalidate any storage location entry associated with the data, the invalidation request sent in response to the second node receiving a write request to modify the data; invalidating, by the first node, the dummy entry; receiving, by the first node, a response to the read request from the second node with the requested data; and replacing, by the first node, the dummy entry with a storage location entry and invalidating the storage location entry based on the invalidated dummy entry.

Abstract: A method is provided that includes searching tags in a tag group comprised in a tagged memory system for an available tag line during a clock cycle, wherein the tagged memory system includes a plurality of tag lines having respective tags and wherein the tags are divided into a plurality of non-overlapping tag groups, and searching tags in a next tag group of the plurality of tag groups for an available tag line during a next clock cycle when the searching in the tag group does not find an available tag line.

Abstract: Provided is a data storage system including a host including a host cache portion of a mirror cache, the host cache portion for storing metadata indicating a location of a data node that is stored in a kernel cache portion of the mirror cache, and a storage device including the kernel cache portion located in a common memory area.

Abstract: A device determines that a policy is to be executed. The device retrieves rules, resource identifiers, and data provider identifiers associated with the policy, generates a pending rules data structure and populates the pending rules data structure with identifiers of the retrieved rules and their respective necessary resources as indicated by the resource identifiers. The device generates a pending resources data structure with the resource identifiers and their respective data providers, collects, asynchronously, each resource, and, as each respective resource is collected, deletes the respective resource from the pending resources data structure and populates a collected resources data structure with an identifier of the respective resource.

Abstract: Aspects of the invention include decoding a base address and an offset to generate a first potential memory address and a second potential memory address. A first cell data associated with the first potential memory address of a first partitioned array and a second cell data associated with a second partitioned array are evaluated. Carry-out bit information is received from a summing operation of the base address and the offset, the operating being performed in parallel to the decoding. The carry-out bit information is used to select either the first cell data or the second cell data.

Abstract: A system for cloud-based file services, comprising: a plurality of single-tenant file system nodes configured to provide file system access to an object store via a plurality of multitenant storage nodes; the plurality of multitenant storage nodes sharing access to the object store; and one or more management nodes configured to provision resources for the plurality of single-tenant file system nodes and the plurality of multitenant storage nodes, including modifying resources within the system.

Abstract: The present invention provides a storage device including a controller and methods for operating the storage device and the controller. A controller of a storage device may comprise: an interface controller; a memory controller; a processor configured to transmit downstream commands and upstream commands to the memory controller. The memory controller may be coupled between the interface controller and the processor and may comprise: a first command queue; a second command queue; and a tag generator. The memory controller may be configured to: store a first command received from the processor in the first command queue; store a second command received from the processor in the second command queue; and in response to a first access region of the first command overlapping a second access region of the second command in the second queue, assign an order tag to the second command based on a first serial number of the first command by the tag generator.

Abstract: A processor includes request issuing units issuing an access request to a storage, a data array including banks holding sub data divided from data read from the storage based on the access request, a switch to transfer the access request to one of the banks, and first and second determination units. The first determination unit determines a cache hit when a tag address included in the access address matches a tag address held therein in correspondence with an index address included in the access address. The second determination unit determines a cache hit when identification information corresponding to a first tag address included in the access address and a second tag address included in the access address, match identification information and second tag address held therein. A cache controller makes access to the data array or storage, based on a determination result of the first or second determination unit.

Abstract: A cache of a processor includes a cache controller to implement a cache management policy for the insertion and replacement of cache lines of the cache. The cache management policy assigns replacement priority levels to each cache line of at least a subset of cache lines in a region of the cache based on a comparison of a number of accesses to a cache set having a way that stores a cache line since the cache line was last accessed to a reuse distance determined for the region of the cache, wherein the reuse distance represents an average number of accesses to a given cache set of the region between accesses to any given cache line of the cache set.

Abstract: An example method of cursor seek operations using deleted record spans in memory sub-systems comprises: receiving, by a processing device, a request to search for a first data element of a key-value data store, the request specifying a first key associated with the first data element; determining that the first key is within a range of deleted data elements comprising a plurality of deleted data elements of the key-value data store; identifying a tail key associated with a tail element of the range of deleted data elements; identifying a second data element in the key-value data store, wherein the second data element is associated with a second key that follows the tail key in a specified order of keys; and providing the second data element in response to the request.

Abstract: Providing persistent storage to transient cloud computing services, including: creating a cloud computing instance, wherein the cloud computing instance is created on on-premises cloud infrastructure; and storing, in non-volatile storage in a storage system that is communicatively coupled to the on-premises cloud infrastructure, data associated with the cloud computing instance.

Abstract: A method for responding to a tabular database (TD) query, the method may include (i) receiving the TD query, wherein the TD query comprises one or more numerical conditions; (ii) determining, using gap filters and based on the one or more numeral conditions, a relevancy to the TD query of groups of cells of the TD that are associated with the gap filters; wherein different gap filters are associated with different groups of cells of the TD; wherein each gap filter comprises one or more pairs of minimum-maximum values that are defined based on one or more gaps between sorted values of the group of cells, wherein at least one gap filter of the gap filters is set up based on a storage parameter of the gap filter and a filtering parameter of the gap filter; (iii) skip a scanning of one or more groups of cells of the TD that are irrelevant to the TD query; and (iv) generate a response to the TD query, wherein the generating comprises scanning one or more groups of cells of the TD that are relevant to the TD query.

Abstract: Methods and systems for detecting a privacy violation in an image file. A policy to be used by a master imaging application is obtained and a file system is monitored for a digital image modified by a monitored imaging application. It is then determined that the digital image file includes at least some content in violation of a defined setting for the master imaging application and, based on the determination that the digital image file includes at least some content in violation of the defined setting for the master imaging application, taking an action.

Abstract: Some implementations provide systems, devices, and methods for implementing a cache replacement policy. A memory request is issued for attribute information associated with a node in an acceleration data structure. The attribute information associated with the node is inserted into a cache entry of the cache and an age associated with the cache entry is set to a value based on the attribute information, in response to the memory request causing a cache miss.

Abstract: A memory request, including an address, is accessed. The memory request also specifies a type of an operation (e.g., a read or write) associated with an instance (e.g., a block) of data. A group of caches is selected using a bit or bits in the address. A first hash of the address is performed to select a cache in the group. A second hash of the address is performed to select a set of cache lines in the cache. Unless the operation results in a cache miss, the memory request is processed at the selected cache. When there is a cache miss, a third hash of the address is performed to select a memory controller, and a fourth hash of the address is performed to select a bank group and a bank in memory.

Abstract: Techniques for storage management involve: in accordance with a determination that an input/output (I/O) request of a storage system is received, determining a target storage device to which the I/O request is directed. The techniques further involve: in accordance with a determination that the target storage device is a storage device of a first type, processing the I/O request by accessing a memory of the storage system. The techniques further involve: in accordance with a determination that the target storage device is a storage device of a second type different from the first type, processing the I/O request without accessing the memory, the storage device of the second type having an access speed higher than that of the storage device of the first type. Accordingly, such techniques can improve performance of a storage system.

Abstract: A method and apparatus for cache management and eviction polices using unsupervised reinforcement learning schemes is disclosed.

Abstract: A method for accessing information. The information is received by a computer system from sources for distribution to client computer systems. A piece of the information received from the sources without temporal data is identified by the computer system. The temporal data for the piece of the information based on a policy is identified by the computer system. The temporal data is associated with the piece of the information by the computer system, enabling analyzing the information by a client computer system with increased accuracy.

Abstract: A cache system may include a cache to store a plurality of cache lines in a write-back mode; dirty cache line counter circuitry to store a count of dirty cache lines in the cache, increment the count when a new dirty cache line is added to the cache, and decrement the count when an old dirty cache line is written-back from the cache; dirty cache line write-back tracking circuitry to store an ordering of the dirty cache lines in a write-back order; mapping circuitry to map the dirty lines into the ordering; and controller circuity to use the mapping circuity to identify an evicted dirty cache line in the ordering and remove the evicted dirty cache line from the ordering.

Abstract: A method for maintaining statistics for data elements in a cache is disclosed. The method maintains a heterogeneous cache comprising a higher performance portion and a lower performance portion. The method maintains, within the lower performance portion, a ghost cache containing statistics for data elements that are currently contained in the heterogeneous cache, and data elements that have been demoted from the heterogeneous cache within a specified time interval. The method calculates a size of the ghost cache based on an amount of frequently accessed data that is stored in backend storage volumes behind the heterogeneous cache. The method alters the size of the ghost cache as the amount of frequently accessed data changes. A corresponding system and computer program product are also disclosed.

Abstract: Example tiered storage systems, storage devices, and methods provide intelligent data access across tiered storage systems. An example system can comprise one or more computing devices, a file system, an object storage system comprising an object storage, and a data tiering application. The data tiering application is executable by one or more computing devices to perform operations comprising determining, using machine learning logic, a cluster of associated files stored in the file system; and archiving the cluster of associated files from the file system to the object storage coupled for electronic communication to the file system via a computer network.

Abstract: Provided herein may be a storage device and a method of operating the same. A memory controller may include a command processor configured to generate a flush command in response to a flush request and determine flush data chunks to be stored, a write operation controller configured to control memory devices to perform a first program operation of storing flush data chunks, and to perform a second program operation of storing data corresponding to a write request that is input later than the flush request, regardless of whether a response to the flush command has been provided to a host, and a flush response controller configured to, when the first program operation is completed, provide a response to the flush command to the host depending on whether responses to flush commands, input earlier than the flush command, have been provided to the host.

Abstract: Embodiments of the present disclosure relate to establishing and verifying an index file. The method for establishing an index file includes: in response to receiving a data block to be stored, determining first verification information for verifying the data block and a first storage address for storing the data block. This method further includes: based on the first verification information, determining an index entry for the data block and a second storage address for storing the index entry, wherein the index entry includes the first verification information and the first storage address, and the index entry will be included in the index file. This method further includes: based on the index entry and the second storage address, determining second verification information. This method further includes: based on the second verification information and historical verification information for the index file, determining third verification information for verifying the index file.

Abstract: A method is provided that includes searching tags in a tag group comprised in a tagged memory system for an available tag line during a clock cycle, wherein the tagged memory system includes a plurality of tag lines having respective tags and wherein the tags are divided into a plurality of non-overlapping tag groups, and searching tags in a next tag group of the plurality of tag groups for an available tag line during a next clock cycle when the searching in the tag group does not find an available tag line.

Abstract: Systems and methods are disclosed including a first memory component, a second memory component having a lower access latency than the first memory component and acting as a cache for the first memory component, and a processing device operatively coupled to the first and second memory components. The processing device can perform operations including receiving a data access operation and, responsive to determining that a data structure includes an indication of an outstanding data transfer of data associated with a physical address of the data access operation, determining whether an operation to copy the data, associated with the physical address, from the first memory component to the second memory component is scheduled to be executed. The processing device can further perform operations including determining to delay a scheduling of an execution of the data access operation until the operation to copy the data is executed.

Abstract: In various embodiments, an electronic device may include a display, a memory including a first space storing no data and a second space storing data, and a processor. The processor may be configured to control the electronic device to: receive an input for inputting a setting value for a fast data storage mode of the memory, to allocate a predetermined size of a free space of a file system of the electronic device as a temporary memory space for the fast data storage mode based on the setting value for the fast data storage mode, to control the memory to allocate a predetermined size of the first space as a borrowed space for the fast data storage mode corresponding to the size of the temporary memory space, to recognize occurrence of an event for starting data storage through the fast data storage mode, and to control the memory to perform the data storage using the borrowed space through the fast data storage mode in response to the occurrence of the event.

Abstract: A first read request for data stored at a non-volatile memory is received by a primary storage controller. The data is programmed from the non-volatile memory to a first cache of the primary storage controller, the first cache to store the data over a first time range. A second read request is received for the data. In response to receiving the second read request for the data, the data is programmed to a second cache to store the data over a second time range that is greater than the first time range. A notification is transmitted to a secondary storage controller, the notification including information associated with the programming of the data to the second cache.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for allocation in a victim cache system. An example apparatus includes a first cache storage, a second cache storage, a cache controller coupled to the first cache storage and the second cache storage and operable to receive a memory operation that specifies an address, determine, based on the address, that the memory operation evicts a first set of data from the first cache storage, determine that the first set of data is unmodified relative to an extended memory, and cause the first set of data to be stored in the second cache storage.

Abstract: Software-based data planes for network function virtualization may use a modular approach in which network functions are implemented as modules that can be composed into service chains. Infrastructures that allow these modules to share central processing unit resources are particularly appealing since they support multi-tenancy or diverse service chains applied to different traffic classes. Systems, methods, and apparatuses introduce schemes for load balancing considering central processing unit utilization of a next hop device when processing a packet that uses a service chain.

Abstract: The present technology relates to an electronic device. According to the present technology, a storage device having an improved operation speed may include a nonvolatile memory device, a main memory configured to temporarily store data related to controlling the nonvolatile memory device, and a memory controller configured to control the nonvolatile memory device and the main memory under control of an external host. The main memory may aggregate and process a number of write transactions having continuous addresses, among write transactions received from the memory controller, equal to a burst length unit of the main memory.

Abstract: A method of authenticating sensor data includes receiving, by at least a temporal attester, sensor data, calculating, by the at least a temporal attester, a current time, generating, by the at least a temporal attester, a secure timestamp generated as a function of the current time, and transmitting, by the at least a temporal attester and to at least a verifier, a temporally attested sensor signal including the secure timestamp.

Abstract: A technique for determining whether a register value should be written to an operand cache or whether the register value should remain in and not be evicted from the operand cache is provided. The technique includes executing an instruction that accesses an operand that comprises the register value, performing one or both of a lookahead technique and a prediction technique to determine whether the register value should be written to an operand cache or whether the register value should remain in and not be evicted from the operand cache, and based on the determining, updating the operand cache.

Abstract: A memory module includes at least two memory devices. Each of the memory devices perform verify operations after attempted writes to their respective memory cores. When a write is unsuccessful, each memory device stores information about the unsuccessful write in an internal write retry buffer. The write operations may have only been unsuccessful for one memory device and not any other memory devices on the memory module. When the memory module is instructed, both memory devices on the memory module can retry the unsuccessful memory write operations concurrently. Both devices can retry these write operations concurrently even though the unsuccessful memory write operations were to different addresses.

Abstract: The present technology relates to an electronic device. According to the present technology, a storage device having an improved operation speed may include a nonvolatile memory device, a main memory configured to temporarily store data related to controlling the nonvolatile memory device, and a memory controller configured to control the nonvolatile memory device and the main memory under control of an external host. The main memory may aggregate and process a number of write transactions having continuous addresses, among write transactions received from the memory controller, equal to a burst length unit of the main memory.

Abstract: Methods, apparatus, systems and articles of manufacture to facilitate atomic operation in victim cache are disclosed. An example system includes a first cache storage to store a first set of data; a second cache storage to store a second set of data that has been evicted from the first cache storage; and a storage queue coupled to the first cache storage and the second cache storage, the storage queue including: an arithmetic component to: receive the second set of data from the second cache storage in response to a memory operation; and perform an arithmetic operation on the second set of data to produce a third set of data; and an arbitration manager to store the third set of data in the second cache storage.

Abstract: Various embodiments disclose a method for maintaining file versions in volatile memory. The method includes storing, in volatile memory for at least a first portion of a first sync interval, a first version of a file that is not modifiable during the at least the first portion of the first sync interval. The method also includes storing, in volatile memory for at least a second portion of the first sync interval, a second version of the file that is modifiable during the at least the second portion of the first sync interval. The method also includes subsequent to the first sync interval, replacing in nonvolatile memory, a third version of the file with the first version of the file stored in volatile memory. Further, the method includes marking the second version of the file as not modifiable during at least a first portion of a second sync interval.

Abstract: Various embodiments provide an electronic device and a method, the electronic device comprising: a memory; a first processor; a second processor which has attributes different from those of the first processor; and a control unit, wherein the control unit is configured to identify a task loaded into the memory, select which of the first processor and the second processor is to execute the task, on the basis of attribute information corresponding to a user interaction associated with the task, and allocate the task to the selected processor. Other embodiments are also possible.

Abstract: Embodiments of the present disclosure generally relate to a target device handling overlap write commands. In one embodiment, a target device includes a non-volatile memory and a controller coupled to the non-volatile memory. The controller includes a random accumulated buffer, a sequential accumulated buffer, and an overlap accumulated buffer. The controller is configured to receive a new write command, classify the new write command, and write data associated with the new write command to one of the random accumulated buffer, the sequential accumulated buffer, or the overlap accumulated buffer. Once the overlap accumulated buffer becomes available, the controller first flushes to the non-volatile memory the data in the random accumulated buffer and the sequential accumulated buffer that was received prior in sequence to the data in the overlap accumulated buffer. The controller then flushes the available overlap accumulated buffer, ensuring that new write commands override prior write commands.

Abstract: A method for improving asynchronous data replication between a primary storage system and a secondary storage system is disclosed. In one embodiment, such a method includes monitoring, in a cache of the primary storage system, unmirrored data elements needing to be mirrored, but that have not yet been mirrored, from the primary storage system to the secondary storage system. The method maintains a regular LRU list designating an order in which data elements are demoted from the cache. The method determines whether a data element at an LRU end of the regular LRU list is an unmirrored data element. In the event the data element at the LRU end of the regular LRU list is an unmirrored data element, the method moves the data element to a transfer-pending LRU list dedicated to unmirrored data elements in the cache. A corresponding system and computer program product are also disclosed.

Abstract: A method for demoting a selected storage element from a cache memory includes storing favored and non-favored storage elements within a higher performance portion and lower performance portion of the cache memory. The favored storage elements are retained in the cache memory longer than the non-favored storage elements. The method maintains a first favored LRU list and a first non-favored LRU list, associated with the favored and non-favored storage elements stored within the higher performance portion of the cache. The method selects a favored or non-favored storage element to be demoted from the higher performance portion of the cache memory according to life expectancy and residency of the oldest favored and non-favored storage elements in the first LRU lists. The method demotes the selected from the higher performance portion of the cache to the lower performance portion of the cache, or to the data storage devices, according to a cache demotion policy.

Abstract: A co-processing fraud risk scoring system for scoring electronic payment transactions for potential fraud is described. Additionally, a method and a computer-readable storage medium for scoring electronic payment transactions for potential fraud are described.

Abstract: One or more client threads are executed. One or more processing threads corresponding to the one or more client threads are executed. The processing threads are configurable to generate statistical information for each database query statement processed by the corresponding client thread. The statistical information is generated from the processing threads. The statistical information is stored in chunks of memory managed via a plurality of queues. The chunks of memory containing the statistics are analyzed. Outlier statements are filtered based on the statistics. Non-outlier statements are stored by a storage device.

Abstract: The present technology relates to an electronic device. According to the present technology, a storage device having an improved operation speed may include a nonvolatile memory device, a main memory configured to temporarily store data related to controlling the nonvolatile memory device, and a memory controller configured to control the nonvolatile memory device and the main memory under control of an external host. The main memory may aggregate and process a number of write transactions having continuous addresses, among write transactions received from the memory controller, equal to a burst length unit of the main memory.

Abstract: Systems, methods, and storage media for managing traffic on a digital content delivery network are disclosed. Exemplary implementations may: receive an item of digital content on a digital content delivery network; assign a type category to the item of digital content; determine an update time variable of the item of digital content; determine a cache time for the item of digital content based on the type category of the item of digital content and the update time variable of the item of digital content and; and cache an instance of the item of digital content in a cache memory associated with the content delivery network for the cache time and removing the instance from the cache memory after the cache time has lapsed.