Abstract: Systems and methods for low-power double data rate (LPDDR) compatible High Bandwidth NAND (HBN) include receiving, from an application, a request associated with a memory device, the request being of a request type; issuing a first command to the memory device via a memory controller, the first command based on the request type; polling the memory device for a status of the memory device, the status associated with a readiness of the memory device for the request; determining that the memory device is ready based on the status; and issuing a second command to the memory device via a memory controller to fulfill the request.

Abstract: Provided are systems, methods, and apparatuses for assisted cache data placement. In one or more examples, systems, methods, and apparatuses include assigning a first identifier to first data based on an aspect of the first data, the first data being data moved from a cache and assigning a second identifier to second data based on an aspect of the second data, the second data being moved to a storage device based on a policy of the cache. In one or more examples, systems, methods, and apparatuses include storing the first data in a first storage location of the storage device based on the first identifier and storing the second data in a second storage location of the storage device based on the second identifier.

Abstract: A system and a method are disclosed for managing data placement and prefetching in a solid-state drive (SSD). The method includes receiving a memory access request; predicting a memory address, based on the memory access request, using a prediction model trained on access patterns; and prefetching data associated with the predicted memory address from the SSD, based on the memory access request and a data placement group.

Abstract: A storage device is disclosed. An interface may receive a write request from an application to store a data. A first storage device may act as a cache. The first storage device may include a first storage unit associated with a first lifetime data. A second storage device may act as a persistent storage. The second storage device may include a second storage unit associated with a first placement data. The first storage device may be configured to store the data in the first storage unit associated with the first lifetime data based on a second lifetime data. The second storage device may be configured to store the data in the second storage unit associated with the first placement data based at least in part on the second lifetime data.

Abstract: Provided are systems, methods, and apparatuses for memory bus timing synchronization. In one or more examples, the systems, devices, and methods include data staging for memory module, the method comprising: storing one or more parameters of a host command in a command table based on receiving, from a host, a host command for the memory of the memory module; estimating a cycle time for completing the host command at the memory; and providing, to the host via the memory of the memory module, data in a buffer of the memory module, the data being stored in the buffer based on the memory completing the host command.

Abstract: Provided are systems, methods, and apparatuses for secure in-memory data prefetch for wide-IO NAND memory. In one or more examples, the systems, devices, and methods include allocating a memory region of a first memory type based on an allocation command; receiving, at a controller of the first memory type and from an application of a host, a load instruction configured for a second memory type different from the first memory type; converting a memory address, of the second memory type, from the second memory type to a converted memory address of the first memory type; determining the converted memory address matches a memory address of the memory region; fetching prefetch data from the memory region based on predicting that the application will use the data based on the load instruction; and providing the prefetch data to the application of the host based on the load instruction.

Abstract: A storage device is disclosed. The storage device may comprise storage for input encoded data. A controller may process read requests and write requests from a host computer on the data in the storage. An in-storage compute controller may receive a predicate from the host computer to be applied to the input encoded data. A transcoder may include an index mapper to map an input dictionary to an output dictionary, with one entry in the input dictionary mapped to an entry in the output dictionary, and another entry in the input dictionary mapped to a “don't care” entry in the output dictionary.

Abstract: A method includes storing, at a computing device, access granularity criteria associated with a memory area. The method further includes receiving a memory operation request requesting access to a first portion of the memory area at the first access granularity. The method further includes in response to the memory operation request satisfying the access granularity criteria, sending, from the computing device, a command to a storage device based on the memory operation request.

Abstract: Provided are systems, methods, and apparatuses for assisted cache data placement. In one or more examples, systems, methods, and apparatuses include assigning a first identifier to first data based on an aspect of the first data, the first data being data moved from a cache and assigning a second identifier to second data based on an aspect of the second data, the second data being moved to a storage device based on a policy of the cache. In one or more examples, systems, methods, and apparatuses include storing the first data in a first storage location of the storage device based on the first identifier and storing the second data in a second storage location of the storage device based on the second identifier.

Abstract: A storage device is disclosed. An interface may receive a write request from an application to store a data. A first storage device may act as a cache. The first storage device may include a first storage unit associated with a first lifetime data. A second storage device may act as a persistent storage. The second storage device may include a second storage unit associated with a first placement data. The first storage device may be configured to store the data in the first storage unit associated with the first lifetime data based on a second lifetime data. The second storage device may be configured to store the data in the second storage unit associated with the first placement data based at least in part on the second lifetime data.

Abstract: There is provided a memory controller including an interface and a processor. The processor fetches a memory request in one of a plurality of queues storing a plurality of memory requests from a host, compares a destination address of the memory request with a first stored destination address, among one or more stored destination addresses in a storage, associates the memory request with the first stored destination address in the storage based on a match between the destination address of the memory request and the first stored destination address in the storage, and processes one or more entries in the storage in response to the memory request.

Abstract: Provided is a method of adjusting prefetching operations, the method including setting a prefetching distance, accessing a prefetching-trigger key, determining a target key is outside of the prefetching distance from the prefetching-trigger key, increasing the prefetching distance, and successfully fetching a subsequent target key of a subsequent prefetching-trigger key from a prefetching read-ahead buffer.

Abstract: A storage device is disclosed. The storage device may comprise storage for input encoded data. A controller may process read requests and write requests from a host computer on the data in the storage. An in-storage compute controller may receive a predicate from the host computer to be applied to the input encoded data. A transcoder may include an index mapper to map an input dictionary to an output dictionary, with one entry in the input dictionary mapped to an entry in the output dictionary, and another entry in the input dictionary mapped to a “don't care” entry in the output dictionary.

Abstract: Provided is a method of database management including locating, with a recovery logic, a first metadata table using a beginning metadata table key, reading, by the recovery logic, the first metadata table, retrieving, with the recovery logic, a first next metadata table key of the first metadata table, locating, by the recovery logic, a second metadata table based on the first next metadata table key or based on a third next metadata table key of a third metadata table having a third metadata table range between a first metadata table range of the first metadata table and a second metadata table range of the second metadata table, reading, by the recovery logic, the second metadata table, determining, by the recovery logic, the second metadata table lacks valid keys in the second metadata table range, and making available, by the recovery logic, memory space associated with the second metadata table.

Abstract: A storage device is disclosed. The storage device may comprise storage for input encoded data. A controller may process read requests and write requests from a host computer on the data in the storage. An in-storage compute controller may receive a predicate from the host computer to be applied to the input encoded data. A transcoder may include an index mapper to map an input dictionary to an output dictionary, with one entry in the input dictionary mapped to an entry in the output dictionary, and another entry in the input dictionary mapped to a “don't care” entry in the output dictionary.

Abstract: A method includes storing, at a computing device, access granularity criteria associated with a memory area. The method further includes receiving a memory operation request requesting access to a first portion of the memory area at the first access granularity. The method further includes in response to the memory operation request satisfying the access granularity criteria, sending, from the computing device, a command to a storage device based on the memory operation request.

Abstract: Provided is a method of linking multiple KV blocks in a KV chain to ensure data consistency, the method including allocating an internal key to both a first KV block and a recovery begin internal key, allocating a next internal key that is different from the internal key and that corresponds to a next KV block, and encapsulating respective user key values in the first KV block and in the next KV block, wherein the first KV block is accessed by reading the recovery begin internal key, and wherein the next KV block is accessed by reading the next internal key of the first KV block.

Abstract: Provided is a system and method for searching for a target key in a database, the method including populating a hash-offset table of a sorted key table with hash-offset table entries, the hash-offset table entries having a hash-value corresponding to a respective key, and a hash offset, sorting the hash-offset table entries based on the hash-values, searching for a target hash-value of the hash-values corresponding to a target key in the hash-offset table, locating a target key-value pair corresponding to the target key based on the target hash-value, and saving a location of the target key-value pair.

Abstract: Provided is a method of adjusting prefetching operations, the method including setting a prefetching distance, accessing a prefetching-trigger key, determining a target key is outside of the prefetching distance from the prefetching-trigger key, increasing the prefetching distance, and successfully fetching a subsequent target key of a subsequent prefetching-trigger key from a prefetching read-ahead buffer.

Abstract: Provided is a method of data storage, the method including receiving a write request including a user key, determining the user key exists in a cache, generating or updating metadata corresponding to the user key, writing data corresponding to the write request to a storage device, converting the metadata to a device format corresponding to the storage device, and storing the metadata on the storage device.