Samsung Electronics Co., Ltd.

Changho Choi

Rajinikanth Pandurangan

Yang Seok Ki

Nima Elyasi

Hingkwan Huen

Jianjian Huo

Jingpei Yang

Derrick Tseng

Ramzi Ammari

Jason Martineau

Praveen Krishnamoorthy

Sungwook Ryu

Ilgu Hong

Janki Bhimani

Vijay Balakrishnan

Vikas Sinha

Ehsan M Najafabadi

Sushma Devendrappa

Qinling Zheng

James Liu

Zongwang Li

Stephen Garry Fischer

Timothy Clayton Bisson

Jongmin Gim

Ramaraj Pandian

Yangwook Kang

Byung Choi

Xiling Sun

Mukesh Garg

Seontaek Kim

Oluwole Jaiyeoba

Andrew Zhenwen Chang

Wentao Wu

Heekwon Park

Anahita Shayesteh

William David Schwaderer

Truong Nguyen

Armin Haj Aboutalebi

Taeil Um

Jaemin Jung

Omkar Desai

Sung Wook Ryu

Dong Gi Daniel Lee

Divya Kiran Kadiyala

Ke Chen

Soheil Khadirsharbiyani

Sun Xiling

A hierarchical memory system and method. In some embodiments, the method includes: demoting a first page of data from a fast memory to a slow memory; promoting the first page of data from the slow memory to an intermediate memory zone; and promoting the first page of data from the intermediate memory zone to the fast memory, wherein the intermediate memory zone includes a virtual zone within the slow memory.

Hierarchical memory system

A system including a scalable memory pool. In some embodiments, the system includes: a first memory node, including a first memory; a second memory node, including a second memory; and a memory node switching fabric connected to the first memory node and the second memory node, the memory node switching fabric being configured to provide access, via the first memory node: with a first latency, to the first memory, and with a second latency, greater than the first latency, to the second memory.

Scalable memory pool

Systems and methods for memory representation and management are disclosed. A request to allocate memory in a first storage medium is identified. The first storage medium may be associated with a first tier of a memory hierarchy. The memory may be represented via at least a first node of a first data structure in response to the request. The first data structure may be associated with the first tier. Activity associated with a memory address represented by the first node may be tracked, and an order for the first node in the first data structure may be updated based on the activity. An association of the first node may be moved from the first data structure to a second data structure. The second data structure may be associated with a second tier of the memory hierarchy.

Systems and methods for memory representation and management

A system and method for page mirroring for storage. In some embodiments, the method includes: reading first data from a persistent memory device; establishing that the first data is stored in a first cache; and copying the first data from the first cache to a system memory, wherein the persistent memory device supports an external protocol and a memory protocol.

System and method for page mirroring for storage

A system includes: a group of memory resources including a first memory node and a second memory node, the first memory node being connected to the second memory node over a switching fabric; and a synchronous clock source connected to the first memory node and the second memory node, the synchronous clock source to provide a synchronized clock signal to the first memory node and the second memory node to synchronize the first memory node with the second memory node. The first memory node and the second memory node are to encode memory data and decode encoded memory data using the synchronized clock signal.

Systems and methods for synchronous cell switching for scalable memory

Systems and method for memory representation and tracking are disclosed. A storage system may identify a request to allocate memory in a first storage medium. In response to the request, the storage system may represent the memory via at least a first node of a first data structure. The first node may store first information for a first portion of the memory and a second portion of the memory. A criterion may be monitored for at least one of the first portion or the second portion. An order of the first node in the first data structure may be updated based on detecting the criterion.

Systems and methods for memory representation and tracking

A system is disclosed. The system may include a processor. The system may also include a first submission queue (SQ) and a second SQ. The first SQ may be associated with a first Quality of Service (QoS) level and the second SQ may be associated with a second QoS level, the first QoS level being different from the second QoS level. An application may be running on the processor and using a first namespace (NS). The processor may be configured to receive a first Non-Volatile Memory (NVM) Set create command to establish a first NVM Set associated with the first SQ. The processor may be further configured to receive a second NVM Set create command to establish a second NVM Set associated with the second SQ. The processor may be further configured to receive a first NS create command to establish a first NS associated with the first NVM Set. The processor may be further configured to receive a second NS create command to establish a second NS associated with the second NVM Set. The processor may be further configured to place an input/output (I/O) request sent from the application to at least one storage device in the first SQ based at least in part on the I/O request being associated with the first NS, the first NS being associated with the first NVM Set, and the first NVM Set being associated with the first SQ.

System architecture providing end-to-end performance isolation for multi-tenant systems

An interface for enabling a computer device to utilize data property-based data placement inside a nonvolatile memory device comprises: executing a software component at an operating system level in the computer device that monitors update statistics of all data item modifications into the nonvolatile memory device, including one or more of update frequencies for each data item, accumulated update and delete frequencies specific to each file type, and an origin of the data item; storing the update statistics of each of the data items and each of the data item types in a database; and intercepting all operations, including create, write, and update, of performed by applications to all the data items, and automatically assigning a data property identifier to each of the data items based on current update statistics in the database, such that the data items and assigned data property identifiers are transmitted over a memory channel.

Heuristic interface for enabling a computer device to utilize data property-based data placement inside a nonvolatile memory device

A system and method for fault page handling. In some embodiments, the method includes: querying a memory device for fault pages in the memory device; and receiving a response from the memory device identifying a fault page. The querying of the memory device may include querying the memory device by a device driver; and the querying of the memory device may include querying the memory device using a supplemental command of a cache coherent protocol.

System and method for fault page handling

A Solid State Drive (SSD) is disclosed. The SSD may include flash memory to store data. An SSD controller may manage reading and writing data to the flash memory. The SSD may include an automatic stream detection logic to select a stream identifier responsive to attributes of data. A garbage collection logic may select an erase block and program valid data in the erase block into a second block responsive to a stream ID determined the automatic stream detection logic. The stream ID may be determined after the garbage collection logic has selected the erase block for garbage collection.

Garbage collection—automatic data placement

A method for communicating with a device may include running, at a device, an operating system, communicating, using a first function of an interconnect, with the device, and communicating, using a second function of the interconnect, with the operating system. The operating system may include communication logic, and the communicating with the operating may include communicating with the communication logic. The communication logic may one or more terminal support drivers, and the communicating with the communication logic may include communicating with the one or more terminal support drivers using a terminal application. The terminal application may run on a host. The second function of the interconnect may be configured to operate with a controller. The communicating with the operating system may include communicating with the operating system based on a privilege information. The host may be a management controller. The method may further include controlling, using the second function of the interconnect, a program on the operating system.

Systems, methods, and devices for accessing a device operating system over an interconnect

A storage device, and a method for operating a storage device. In some embodiments, the storage device includes storage media, and the method includes: determining, by the storage device, that the storage device is in a first fault state from which recovery is possible by power cycling the storage device or by formatting the storage media; determining, by the storage device, that the storage device is in a second fault state from which partial recovery is possible by operating the storage device with reduced performance, with reduced capacity, or in a read-only mode; and operating the storage device with reduced performance, with reduced capacity, or in the read-only mode.

Fault resilient storage device

Systems and methods for memory management are described. An example method can include: performing a first determination that may include: comparing a first parameter associated with a storage device to a second parameter associated with an application. In addition, the method may include performing a second determination based on the first determination, where the second determination may include: inserting data into a storage partition of the storage device; and determining to store a minimum processing unit associated with the data in the storage device.

Systems and methods for checking data alignment between applications, file systems, and computational storage devices

A method includes receiving, at a controller of a computational storage (CS) device, a request to allocate computational storage to an application of a host device. The request includes a resource set ID associated with the application. The method further includes identifying a memory range within a memory region of the CS device. The method further includes storing, in a data structure associated with the resource set ID, an association between a memory range identifier (ID) of the memory range, the memory region, and an offset within the memory region. The method further includes sending the memory range ID to the host device.

Resource isolation in computational storage devices

A method for predicting a time-to-failure of a target storage device may include training a machine learning scheme with a time-series dataset, and applying the telemetry data from the target storage device to the machine learning scheme which may output a time-window based time-to-failure prediction. A method for training a machine learning scheme for predicting a time-to-failure of a storage device may include applying a data quality improvement framework to a time-series dataset of operational and failure data from multiple storage devices, and training the scheme with the pre-processed dataset. A method for training a machine learning scheme for predicting a time-to-failure of a storage device may include training the scheme with a first portion of a time-series dataset of operational and failure data from multiple storage devices, testing the machine learning scheme with a second portion of the time-series dataset, and evaluating the machine learning scheme.

Systems and methods for predicting storage device failure using machine learning

Growing community of inventors

San Jose, CA, United States of America

Changho Choi