The storage system is capable of creating one or more virtual storage subsystems to which virtual resources having logically divided a processing capacity of the physical resources are allocated, and upon creating a virtual volume for receiving I/O requests from the host within the virtual storage subsystem, the virtual storage subsystem allocates the virtual resource to the virtual volume, and when an I/O request to the virtual volume is received from the host, performs processing related to the I/O request using the virtual resource having been allocated. According further to the storage system, after allocating the virtual resource to the virtual volume, the storage system raises a utilization rate of the virtual resource allocated to the virtual volume in a stepwise manner.

One example of a system includes a plurality of clients, a master chunk coordinator, and a plurality of chunk servers. Each client submits requests to access chunks of objects. The master chunk coordinator maintains chunk information for each object. Each chunk server includes a chunk monitor to monitor client requests, maintain chunk statistics for each chunk based on the monitoring, and transmit the chunk statistics for each chunk to the master chunk coordinator. The master chunk coordinator instructs the chunk servers to re-chunk objects, replicate chunks, migrate chunks, and resize chunks based on the chunk statistics to meet specified parameters.

A data reading method, a data processing device, and a data processing system are provided. The method, executed by a first control node, includes receiving a reading message forwarded by a data switching device, where the reading message is used to instruct the first control node to read first data, and the reading message is sent by a second control node to the data switching device; if a data status identifier of the first data in a first storage node is a valid identifier, reading the first data from the first storage node, and sending the read first data to the data switching device, so that the data switching device forwards the read first data to the second control node, where the valid identifier indicates that the first data on the first storage node is available. The present application ensures that the latest first data in the node group is read.

In one example, a method includes allocating separate portions of memory for a control stack and a data stack. The method also includes, upon detecting a call instruction, storing a first return address in the control stack and a second return address in the data stack; and upon detecting a return instruction, popping the first return address from the control stack and the second return address from the data stack and raising an exception if the two return addresses do not match. Otherwise, the return instruction returns the first return address. Additionally, the method includes executing an exception handler in response to the return instruction detecting an exception, wherein the exception handler is to pop one or more return addresses from the control stack until the return address on a top of the control stack matches the return address on a top of the data stack.

A memory controller component includes transmit circuitry and adjusting circuitry. The transmit circuitry transmits a clock signal and write data to a DRAM, the write data to be sampled by the DRAM using a timing signal. The adjusting circuitry adjusts transmit timing of the write data and of the timing signal such that an edge transition of the timing signal is aligned with an edge transition of the clock signal at the DRAM.

A memory access module for performing memory access management of a storage device includes a plurality of storage cells. Each storage cell has a number of possible bit(s) directly corresponding to possible states of the storage cell. The memory access module further includes: sensing means for performing a plurality of sensing operations, wherein a first sensing operation corresponds to a first sensing voltage, and each subsequent sensing operation corresponds to a sensing voltage determined according to a result of the previous sensing operation; generating means for using the plurality of sensing operations to generate a first digital value and a second digital value of a storage cell; processing means for using the first and the second digital value to obtain soft information of a same bit stored in the storage cell; and decoding means for using the soft information to perform soft decoding.

Technologies are provided for increasing electronic noise of a memory device during an initialization of the memory device and performing initialization operations, such as memory access centering operations, for the memory device while the electronic noise of the memory device is increased. The electronic noise of the memory device can be increased by increasing a level of ground bounce (or ground noise) during a training phase of the memory device. Increasing the ground noise can comprise increasing an inductance across a memory of the memory device during the training phase. The inductance can be increased by deactivating one or more ground connections of the memory during the memory’s training phase. Additionally or alternatively, the inductance can be increased by activating one or more inductors connected to one or more ground connections of the memory during the memory’s training phase.

Nonsequential readahead for deep learning training that includes: receiving an indication of a list of batch storage locations for a batch of data objects; prefetching, for each storage location in the list of batch storage locations, storage content corresponding to the batch of data objects; and storing the storage content corresponding to the batch of data objects within a cache accessible to an artificial intelligence workflow.

In a hierarchical storage memory (HSM), a file recalled by a specific application is migrated as soon as possible after completion of the application process. Specifically, the effective UID of a specific process is preregistered on an HSM client. After a recall operation is performed on a certain file from the user ID, when there is no access from the UID to the file for a given length of time, the file is migrated. This prevents files premigrated by access from any application other than the specific one from being handled in the same way, resolving a disadvantageous problem caused when these (premigrated) files are not desired to be migrated preferentially.

Systems and methods for sharing information between a publisher and a subscriber are disclosed. The system includes a shared memory and a memory broker. The memory broker is configured to receive a request for writing a message relating to a topic from a publisher and determine whether a communication channel corresponding to the topic exists in the shared memory. If the communication channel corresponding to the topic exists, the memory broker then assigns a buffer ring on the communication channel to the publisher, transmits information relating to the buffer ring to the publisher, and transmits information relating to the buffer ring to one or more subscribers of the communication channel.