Information transmission method and device
A technology of information transmission and state information, applied in the information field, can solve problems such as congestion
Active Publication Date: 2019-05-24
HUAWEI TECH CO LTD
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[0004] The embodiment of the present application provides an information transmission method and device, which solves the problem of link congestion in the prior art when multiple processors in an NC node initiate access to the memory of the same address within the same period of time problem, thereby reducing the data access delay and improving the service performance of the system
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[0056] figure 1 It is a schematic structural diagram of a CC-NUMA system, see figure 1 , the system includes a plurality of NC nodes, and each NC node may include an NC chip and a plurality of processors (CPUs). One end of the NC chip is connected to the CPU through a UPI port, and the other end is interconnected with NC chips of other NC nodes through a network interface (Ni), and the multiple NC nodes communicate through the network. In the CC-NUMA system, each processor (CPU) carries a memory, and the memory among multiple processors can be shared, that is, any processor in any NC node can access any memory, and can also access any memory in other NC nodes through the network. figure 1 The CC-NUMA system shown in can also be called an NC system or a multi-processor system. figure 1 Take an NC node as an example to describe the structure of the NC node, and the structures of other NC nodes are similar.
[0057] Currently, during system initialization, the system routing ta...
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The invention provides an information transmission method and device, relates to the technical field of communication, and is used for reducing the time delay of information transmission. The method is applied to a system comprising a plurality of NC nodes, and comprises the following steps: when a first NC node determines that a first path meets a preset condition, the first NC node starts a dynamic route, and the first path is a direct connection path between the first NC node and a second NC node; The first NC node obtains dynamic routing information, wherein the dynamic routing informationindicates link states of a plurality of paths between the first NC node and the second NC node; The first NC node selects M paths with link states in a non-congestion state from the plurality of paths according to the dynamic routing information, the M paths are non-direct connection paths, and M is an integer greater than or equal to 1; And the first NC node transmits information to the second NC node through the at least M paths.
Description
technical field [0001] The embodiments of the present application relate to the field of information technology, and in particular, to an information transmission method and device. Background technique [0002] In the Cache Coherent Non-uniform Memory Access (CC-NUMA) system, each processor has its own extended memory, and the processors are interconnected through Ultra Path Interconnect (UPI )) Form a multi-processor system, multiple processors can exchange data with each other, and all processors share memory, that is, any processor can access the local memory or the memory of other processors. In order to form a multi-processor system and realize interconnection and access between processors, nodes are usually expanded through a node controller (NodeController, NC) chip. One end of the NC chip is connected to the processor through the UPI interface, and the other end is through the (Network Interface, Ni) The port is interconnected with other NC chips to form the whole ...
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IPC IPC(8): H04L12/707H04L12/721H04L12/803H04L12/841H04L45/24
Inventor 胡天驰李涛于东浩
Owner HUAWEI TECH CO LTD