Huawei Technologies Co., Limited

Hkc Corporation Limited

Pei Wu

Huichun Qu

Xiaoping Zhu

Xin Qiu

Victor Gissin

Jinbin Zhang

Haopeng Zhang

Fu Wang

Lidan Ye

Yunyang Liu

Ruliang Dong

Jinyi Zhang

Guangping Wei

Dong Xu

Haixin Wang

Yao Hu

Qiuyue Guo

Jianhong Tu

Huaifeng Xiao

Benhua Peng

Example data transmission methods, processor systems, and memory access systems are provided. One example processor system is applied to a source end device. The processor system includes a processor core and a first remote direct memory access (RDMA) network interface card. The processor core is configured to deliver a memory write instruction. The memory write instruction includes to-be-written data and a destination address of the to-be-written data. The destination address is a memory address of a destination end device. The first RDMA network interface card is configured to encapsulate the to-be-written data based on the destination address of the to-be-written data and configuration information of the destination end device and send the encapsulated to-be-written data to a second RDMA network interface card of the destination end device.

Data transmission method, processor system, and memory access system

A data prefetch method includes before data is prefetched, a first data access request that is first obtained, and a data prefetch policy that is determined based on the first data access request and a data lifecycle such that a first data set stored in a second storage medium is stored into a first storage medium according to the data prefetch policy. The first data set includes at least one piece of data, the data prefetch policy includes at least a prefetch length, the data lifecycle indicates duration for storing data in the first storage medium, and a read/write access rate of the second storage medium is less than that of the first storage medium.

Data prefetch method and apparatus, and device

A backlight module and a display device are disclosed. The backlight module includes: a light guide plate that provides a surface light surface for the display panel and that has a first surface, a second surface, and a third surface, where the first surface is a light-emitting surface, and where the light incident surface connects the first and second surfaces together; a light source disposed on the light incident surface of the light guide plate and used to provide a linear light source for the light guide plate; a light absorbing and reflecting film layer disposed on the second surface of the light guide plate and used for absorbing light and reflecting blue light; and a first reflective sheet disposed on a side of the light absorbing and reflecting film layer facing away from the light guide plate.

Backlight module and display device

A method, device, and system for controlling a data read/write command in an NVMe over fabric architecture. In the method provided in the embodiments of the present disclosure, a data processing unit receives a control command sent by a control device, the data processing unit divides a storage space of a buffer unit into at least two storage spaces according to the control command sent by the control device, and establishes a correspondence between the at least two storage spaces and command queues, and after receiving a first data read/write command that is in a first command queue and that is sent by the control device, the data processing unit buffers, in a storage space that is of the buffer unit and that is corresponding to the first command queue, data to be transmitted according to the first data read/write command.

Method, device, and system for controlling data read/write command in NVMe over fabric architecture

A method, an apparatus and a system for disconnecting a link between a Peripheral Component Interconnect Express (PCIe) device and a host, and pertains to the field of computer technologies. The PCIe device includes an endpoint (EP) device. The method includes: obtaining, by the EP device, an error type of an error in transmitting a transaction layer packet (TLP) between the PCIe device and the host; if the error type is a correctable error type specified in the PCIe protocol, collecting, by the EP device, statistics of a duration for which the error type exists; and disconnecting, by the EP device, a link between the PCIe device and the host if the statistics of the duration reaches a preset duration.

Method and apparatus for disconnecting link between PCIe device and host

A device generates a remote direct memory access (RDMA) packet, where a payload part of the RDMA packet includes a plurality of data blocks and protection information (PI) corresponding to each of the plurality data blocks in to-be-sent data; or a payload part of the RDMA packet includes one data unit or a part of data in the data unit of to-be-sent data, the data unit includes one data block and PI corresponding to the data block, and a length of the data unit is equal to an integer multiple of a length of the part of data; and sends the RDMA packet.

Data sending method and device, data receiving method and device, and system

A control device for a non-volatile memory express (NVMe) over fabric architecture is provided. The control device comprises a network adapter and a processor coupled to the network adapter by a bus. Data is transmitted between the control device and a storage device in the NVMe over fabric architecture. The processor is configured to obtain an available storage space of the storage device, determine whether a storage space required by a first data to be transmitted according to a first data read/write command is equal to or less than the available storage space, and send the first data read/write command to the storage device if the storage space required by the first data is equal or less than to the available storage space and suspend sending of the first data read/write command if the storage space occupied by the first data is greater than the available storage space.

Method, device, and system for buffering data for read/write commands in NVME over fabric architecture

A method and an apparatus for disconnecting a link between a Peripheral Component Interconnect Express (PCIe) device and a host, and pertains to the field of computer technologies. The PCIe device includes an endpoint (EP) device, and the method includes: obtaining, by the EP device, an error type of an error in transmitting a transaction layer packet (TLP) between the PCIe device and the host; if the error type is a correctable error type specified in the PCIe protocol, collecting, by the EP device, statistics of a duration for which the error type exists; and disconnecting, by the EP device, a link between the PCIe device and the host if the statistics of the duration reaches a preset duration. The apparatus includes an obtaining module, a statistics collection module, and a disconnection module.

Method and apparatus for disconnecting link between PCIE device and host

A hot plug method, a host controller, a host, and a PCIe bridge device. The method includes: generating, by a host controller, a first notification packet, where the first notification packet includes hot plug interruption information, and the hot plug interruption information indicates that a first PCIe device is to be hot-plugged; sending, by the host controller, the first notification packet to a host, so that the host performs, according to the first notification packet, a hot plug operation corresponding to the PCIe device; and receiving, by the host controller, a second notification packet sent by the host, and sending the second notification packet to a user equipment controller, to facilitate the user equipment controller to instruct a user to insert or remove the PCIe device, where the second notification packet is for indicating that the hot plug operation corresponding to the PCIe device is completed.

Hot plug method, host controller, host, and PCIE bridge device

A data transmission method, a core forwarding device, and an endpoint forwarding device, where the data transmission method includes, an end-to-end flow control technology that is established between a core device and an endpoint device of a system using the core forwarding device and the endpoint forwarding device, resolving a technical problem in the prior art that a uniform back pressure is generated in an entire data transmission link when any endpoint device generates back pressure when peripheral component interconnect express (PCIe) data is transmitted through the Ethernet, thereby achieving technical effects of increasing bandwidth utilization of the entire system and increasing the data transmission efficiency.

Growing community of inventors

Hangzhou, China

Pei Wu