摘要:
Systems, methods and media for selectively closing pages in a memory in anticipation of a context switch are disclosed. In one embodiment, a table is provided to keep track of open pages for different processes. The table comprises rows corresponding to banks of memory and columns corresponding to cores of a multi-core processing system. When a context switch signal is received, the system unsets a bit in a column corresponding to the core from which the process is to be context-switched out. If no other process is using a page opened by the process the page is closed.
摘要:
Systems, methods and media for selectively closing pages in a memory in anticipation of a context switch are disclosed. In one embodiment, a table is provided to keep track of open pages for different processes. The table comprises rows corresponding to banks of memory and columns corresponding to cores of a multi-core processing system. When a context switch signal is received, the system unsets a bit in a column corresponding to the core from which the process is to be context-switched out. If no other process is using a page opened by the process the page is closed.
摘要:
A system to improve error code decoding with retries may include a processing unit that requests data packets, and a queue to hold the data packets for the processing unit. The system may also include a decoder to determine a processing time for each data packet in the queue based upon any errors in each data packet, and if the processing time for a particular data packet is greater than a threshold, then to renew any requests for the data packets that are in the queue.
摘要:
A system to improve miscorrection rates in error control code may include an error control decoder with a safe decoding mode that processes at least two data packets. The system may also include a buffer to receive the processed at least two data packets from the error control decoder. The error control decoder may apply a logic OR operation to the uncorrectable error signal related to the processing of the at least two data packets to produce a global uncorrectable error signal. The system may further include a recipient to receive the at least two data packets and the global uncorrectable error signal.
摘要:
A memory buffer, memory system and method for power-on initialization and test for a cascade interconnect memory system. The memory buffer includes a bus interface to links in a high-speed channel for communicating with a memory controller via a direct connection or via a cascade interconnection through an other memory buffer. The interface is operable in a SBC mode and a high-speed mode. The memory buffer also includes a field service interface (FSI) slave for receiving FSI signals from a FSI master. In addition, the memory buffer includes logic for executing a power-on and initialization training sequence initiated by the memory controller.
摘要:
Methods, systems, and computer program products are provided for dynamic selective memory mirroring in solid state devices. An amount of memory is reserved. Sections of the memory to select for mirroring in the reserved memory are dynamically determined. The selected sections of the memory contain critical areas. The selected sections of the memory are mirrored in the reserved memory.
摘要:
A memory subsystem includes Data Store 0 and Data Store 1. Each data store is partitioned into N buffers, N>1. An increment of memory is formed by a buffer pair, with each buffer of the buffer pair being in a different data store. Two buffer pair formats are used in forming memory increments. A first format selects a first buffer from Data Store 0 and a second buffer from Data Store 1, while a second format selects a first buffer from Data Store 1 and a second buffer from Data Store 0. A controller selects a buffer pair for storing data based upon the configuration of data in a delivery mechanism, such as switch cell.
摘要翻译:存储器子系统包括数据存储0和数据存储1.每个数据存储分区为N个缓冲区,N> 1。 存储器的增量由缓冲器对形成,缓冲器对的每个缓冲器在不同的数据存储器中。 两个缓冲器对格式用于形成存储器增量。 第一格式从Data Store 0中选择第一个缓冲区,从Data Store 1中选择第二个缓冲区,而第二个格式从Data Store 1中选择第一个缓冲区,并从Data Store 0中选择一个第二个缓冲区。控制器选择一个用于存储数据的缓冲区 基于诸如交换单元之类的递送机制中的数据的配置。
摘要:
Memory access alignment in a double data rate (‘DDR’) system, including: executing, by a memory controller, one or more write operations to a predetermined address of a DDR memory module, including sending to the DDR memory module a predetermined amount of data of a predetermined pattern along with a data strobe signal; executing, by the memory controller, a plurality of read operations from the predetermined address of the DDR memory module, including capturing data transmitted from the DDR memory module; and determining, by the memory controller, a read adjust value and a write adjust value in dependence upon the data captured in response to the read operations.
摘要:
A communication interface device, system, method, and design structure for error correcting code (ECC) protected quasi-static bit communication (SBC) on a high-speed bus are provided. The communication interface device includes high-speed sampling logic to capture high-speed data from the high-speed bus using a high-speed sampling clock and SBC sampling logic to capture SBC samples from the high-speed bus using an SBC sampling clock. The SBC sampling clock is slower than the high-speed sampling clock. The communication interface device also includes an SBC finite state machine (FSM) to detect a received SBC command in response to a static pattern persisting for a predetermined number of the SBC samples and command decoding logic to decode the received SBC command.
摘要:
A design structure embodied in a machine readable storage medium for designing, manufacturing, and/or testing a design is provided. The design structure generally includes a processor memory system, which may include a processor and a memory controller in communication with the processor through a bus. The memory controller may include a delay circuit to receive an early read indicator corresponding to read data from a memory, the delay circuit to delay the early read indicator in accordance with a pre-determined delay such that the early read indicator is passed to the bus in advance of the read data, and a delay adjustment circuit to dynamically adjust the pre-determined delay associated with the delay circuit responsive to a change in operational speed of the processor or the bus.