CN112532582B - Communication control device of multi-node server - Google Patents

Communication control device of multi-node server Download PDF

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Publication number
CN112532582B
CN112532582B CN202011182875.XA CN202011182875A CN112532582B CN 112532582 B CN112532582 B CN 112532582B CN 202011182875 A CN202011182875 A CN 202011182875A CN 112532582 B CN112532582 B CN 112532582B
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path
server
node
bidirectional switch
controller
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CN112532582A (en
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王一鸣
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Suzhou Inspur Intelligent Technology Co Ltd
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Suzhou Inspur Intelligent Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/12—Shortest path evaluation
    • H04L45/123—Evaluation of link metrics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/24—Multipath

Abstract

The invention provides a communication control device of a multi-node server, belongs to the technical field of servers, and solves the problem that the prior art is difficult to meet the requirement of changing an internal access path mode in the process of server maintenance. The method comprises the following steps: the route selection unit and the mode control unit are connected; the path selection unit is respectively connected with the processor of the server and the memory of the server and used for selecting one path from a first path and a second path in a target node to be conducted, the target node comprises a local node and a first external node, the first path is a path for connecting the processor of the server and the memory of the server, and the second path is a path for connecting the substrate controller in the path selection unit and the memory of the server; the mode control unit is connected with the selector of the server outside the local node and used for determining the connection and disconnection of a third path of communication between the substrate controller and the second external node according to the mode signal sent by the selector of the server.

Description

Communication control device of multi-node server
Technical Field
The invention relates to the technical field of servers, in particular to a communication control device of a multi-node server.
Background
With the development of information technology, the application of the server is more and more extensive. In government, financial, energy and other industries, demands for large core databases, virtualization integration, memory computing, and high performance computing are increasing. To increase computing power and meet increasingly heavy data processing requirements, multi-way servers are emerging. Among them, under the advantage of both practicality and price of 8-way servers, the use of servers of this architecture is gradually increasing. In an 8-way server, there are two CPU processors on each motherboard, and 4 motherboards are generally divided into two master nodes and two slave nodes. To save costs, baseboard managers are typically provided on only two host nodes. In the 8-way server, an 8-way system or two 4-way systems are often formed by hardware setting, i.e. single 8-way mode or double 4-way mode.
When the server is maintained, the baseboard manager is required to obtain the internal memory of each device in the server to obtain information such as temperature, logs and the like. At present, mode setting of a server is often fixed along with fixation of each node in an access path, and when different modes need to be adopted, different access paths of a baseboard manager need to be changed actually, so that change of the path modes is realized, and setting modes of different baseboard controllers need to be adjusted. That is, in different path mode schemes, the setting relationship needs to be changed from hardware to meet the needs of different access paths. However, in practical applications, in consideration of practicality and convenience, switching between different modes may be required in the maintenance process of a multi-node server, and the access path between server nodes in the prior art is fixed, which makes it difficult for the prior art to meet the requirements of different server modes in the maintenance process.
Disclosure of Invention
The invention aims to provide a communication control device of a multi-node server, which can change an access path of a substrate controller under different mode signals, thereby realizing the control effect of the communication path under different modes and realizing the switching function of different path modes in the multi-node server.
The invention provides a communication control device equipment of a multi-node server, comprising: the system comprises a path selection unit and a mode control unit, wherein the path selection unit is connected with the mode control unit;
the path selection unit is respectively connected with a processor of the server and a memory of the server and used for selecting one path from a first path and a second path in a target node to be conducted, the target node comprises a local node and a first external node, the first path is a path for connecting the processor of the server and the memory of the server, and the second path is a path for connecting a substrate controller in the path selection unit and the memory of the server;
the mode control unit is used for being connected with a selector of a server outside the local node and determining the connection and disconnection of a third path according to a mode signal sent by the selector of the server, wherein the third path is a communication path between a substrate controller in the path selection unit and a second external node.
Optionally, a path selection unit and the mode control unit are disposed in the second external node;
the mode control unit is further configured to control the third path to be turned on when the mode signal sent by the selector of the server is in the single 8-way mode, so that the substrate controller can access the memory of the server in the second external node through the third path.
Optionally, a path selection unit and the mode control unit are disposed in the second external node;
the mode control unit is further configured to control the third path to be turned off when the mode signal sent by the selector of the server is the dual 4-way mode, so as to prevent the substrate controller from accessing the memory of the server in the second external node through the third path.
Optionally, the mode control unit includes:
the controller is connected with the one-way switch;
the one-way switch is arranged in a third path where the substrate controller is connected with a second external node, and the controller is used for controlling the connection state of the communication path of the substrate controller and the external node by controlling the on or off of the one-way switch.
Optionally, the path selecting unit includes:
the system comprises a substrate controller, a first bidirectional switch and a second bidirectional switch, wherein the first bidirectional switch and the substrate controller are arranged at a local node, and the second bidirectional switch is arranged at a first external node;
the two movable ends of the first bidirectional switch are respectively connected with the substrate controller and the processor of the server of the local node; the control end of the first bidirectional switch is connected with the substrate controller and used for controlling the conduction of a first path in the local node and a corresponding path in the second path by selecting a conducting path from the two movable ends after being controlled by the substrate controller;
the fixed end of the second bidirectional switch is connected with the memory of the server of the first external node, and the two movable ends of the second bidirectional switch are respectively connected with the substrate controller and the processor of the server of the first external node; and the control end of the second bidirectional switch is connected with the substrate controller and used for controlling the conduction of a first path in the first external node and a corresponding path in the second path by selecting a conducting path from the two movable ends after being controlled by the substrate controller.
Optionally, the path selecting unit further includes: a splitter;
the input end of the shunt is connected with the substrate controller, one output end of the shunt is connected with the movable end of the first bidirectional switch, and the other output end of the shunt is connected with the movable end of the second bidirectional switch.
Optionally, the path selecting unit further includes: a combiner;
the output end of the combiner is connected with the input end of the shunt, the first input end of the combiner is connected with the substrate controller of the local node, and the second input end of the combiner is connected with the substrate controller of the second external node.
Optionally, the path selecting unit further includes: a third bidirectional switch;
the fixed end of the third bidirectional switch is connected with the substrate controller, one movable end of the third bidirectional switch is connected with the first input end of the combiner, and the other movable end of the third bidirectional switch is connected with the input end of the shunt.
Optionally, a control end of the third bidirectional switch is connected to the controller of the mode control unit, and the third bidirectional switch is configured to close a target moving end of the corresponding mode signal based on control of the controller.
Optionally, the target moving end includes a first target moving end and a second target moving end, where the first target moving end is a moving end of the third bidirectional switch connected to the first input end of the combiner; the second target moving end is a moving end connected with the input end of the shunt in the third bidirectional switch;
the controller is used for controlling the first target moving end in the third bidirectional switch to be closed when the mode signal is in the single-8-path mode;
the controller is further configured to control the second target moving end in the third bidirectional switch to be closed when the mode signal is in the dual 4-way mode, so as to access the memory of the server of the local node by bypassing the combiner.
The invention provides a communication control device of a multi-node server, which comprises a path selection unit and a mode control unit, wherein the path selection unit is connected with the mode control unit; the path selection unit is respectively connected with a processor of the server and a memory of the server and used for selecting one path from a first path and a second path in a target node to be conducted, the target node comprises a local node and a first external node, the first path is a path for connecting the processor of the server and the memory of the server, and the second path is a path for connecting a substrate controller in the path selection unit and the memory of the server; the mode control unit is used for being connected with a selector of a server outside the local node and determining the connection and disconnection of a third path according to a mode signal sent by the selector of the server, wherein the third path is a communication path between the substrate controller in the path selection unit and a second external node, and therefore switching of access paths of the substrate controller is achieved. The path selection unit can select a required path from the first path and the second path to conduct based on the control of the substrate controller, so that the connection between the processor and the memory can be ensured in the operation stage of the server, and the operation of the server is met; in the maintenance stage of the server, the substrate controller is connected with the memories of the local node and the external sub-node, so that the function of detecting the server by acquiring the memory data by using the substrate controller is achieved. In addition, the mode control unit can determine the on and off of the third path according to the signal mode sent by the external selector, and the third path is a connection path between the substrate controller in the path selection unit and another node outside the node, so that the function of allowing the substrate control unit to acquire data of other nodes outside the non-subnode based on the mode is ensured.
Accordingly, the apparatus, the system and the computer readable storage medium provided by the embodiment of the invention also have the technical effects described above.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a communication control apparatus of a multi-node server according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another communication control apparatus of a multi-node server according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a communication control apparatus of a multi-node server according to another embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a communication control apparatus of a multi-node server according to another embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a communication control apparatus of yet another multi-node server according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an example of practical applications of a communication control apparatus of a multi-node server according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprising" and "having," and any variations thereof, as referred to in embodiments of the present invention, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
An embodiment of the present invention provides a communication control apparatus for a multi-node server, and specifically, as shown in fig. 1, the communication control apparatus includes: a path selection unit 11 and a mode control unit 12; the path selection unit 11 is connected with the mode control unit 12;
the path selecting unit 11 is connected to the processor of the server and the memory of the server, and may be configured to select one path from the first path and the second path in the target node to be conducted. The target node includes a local node and a first external node, the first path is a path connecting a processor of the server and a memory of the server, and the second path is a path connecting a substrate controller in the path selection unit 11 and the memory of the server;
the mode control unit 12 may be configured to connect to a selector of a server outside the local node, and configured to determine, according to a mode signal sent by the selector of the server, on and off of a third path, where the third path is a communication path between the substrate controller in the path selection unit 11 and a second external node.
In this embodiment, the local node may be understood as a master node because the substrate controller is disposed therein, and the first external node may be understood as a child node having a master-slave relationship with the master node. Thus, according to the connection relationship, after the user reaches the mode signal of the selection mode through the controller of the server, the communication between the substrate controller of the main node (local node) and the sub-node can be switched on and off through the mode control unit, and the path access requirements under different modes can be met.
For example, when the mode is the single 8-way mode, the local node is the master node, and other nodes in the server are all child nodes, and then the third path is controlled to be on, so that the substrate controller in the path selection unit of the local node can acquire data of an external node through the third path, and data transmission between a plurality of child nodes under the condition that the node is the master node is realized.
In a possible real-time scenario, since a situation that the path selection unit and the mode control unit are provided in other nodes may be included besides the local node, based on this, the process of controlling the third path in this situation may be:
on one hand, the mode control unit 12 may be further configured to control the third path to be turned on when the mode signal sent by the selector of the server is in the single 8-way mode, so that the substrate controller accesses the memory of the server in the second external node through the third path.
On the other hand, the mode control unit 12 may be further configured to control the third path to be turned off when the mode signal sent by the selector of the server is in the dual 4-way mode, so as to prevent the substrate controller from accessing the memory of the server in the second external node through the third path.
Therefore, the mode control unit can switch on and off the third path based on the single 8-path mode and the double 4-path mode, and can realize the function of controlling whether the substrate controller can access other nodes of the external non-child nodes.
In a possible embodiment, as shown in fig. 2, the path selection unit 11 comprises:
the switch comprises a substrate controller 111, a first bidirectional switch 112 and a second bidirectional switch 113, wherein the first bidirectional switch 112 and the substrate controller 111 are arranged at a local node, and the second bidirectional switch 113 is arranged at a first external node;
the fixed end of the first bidirectional switch 112 is connected to the memory of the server of the local node, and the two movable ends of the first bidirectional switch 112 are connected to the substrate controller 111 and the processor of the server of the local node, respectively; a control end of the first bidirectional switch 112 is connected to the substrate controller 111, and is configured to select a conducting path from the two active ends after being controlled by the substrate controller 111, so as to control a corresponding path in the first path and the second path in the local node to be conducting;
the fixed end of the second bidirectional switch 113 is connected with the memory of the server of the first external node, and the two movable ends of the second bidirectional switch 113 are respectively connected with the substrate controller 111 and the processor of the server of the first external node; the control end of the second bidirectional switch 113 is connected to the substrate controller 111, and is configured to select a conducting path from the two active ends after being controlled by the substrate controller 111, so as to control a corresponding path of the first path and the second path in the first external node to be conducting.
In this way, the two bidirectional switches are used for respectively selecting the first path and the second path in the local node (main node) and the first external node (sub-node), so that the server maintenance function of the substrate controller for acquiring the memory data and the server operation function switching of the processor for acquiring the memory data can be respectively executed in different server operation states.
Further, the mode control unit 12 includes:
the controller 121 and the one-way switch 122, the controller 121 is connected with the one-way switch 122;
the one-way switch 122 is disposed in a third path where the substrate controller 111 is connected to a second external node, and the controller 121 is configured to control a communication path connection state of the substrate controller 111 to the external node by controlling an opening or closing of the one-way switch 122 according to a mode messenger of a selector. Based on this, can open or close according to the controller through the unidirectional switch, realized the connection or the effect of closing the communication between basic controller and the external node.
In a possible implementation, as shown in fig. 3, the path selecting unit 11 further includes: a splitter 114;
the input end of the splitter 114 is connected to the board controller 111, one output end of the splitter 114 is connected to the moving end of the first bidirectional switch 112, and the other output end of the splitter 114 is connected to the moving end of the second bidirectional switch 113. At this time, the substrate controller realizes a branching effect to simultaneously connect the first bidirectional switch and the second bidirectional switch through the branching unit.
Through the arrangement of the shunt, the shunt function of the substrate controller, the first bidirectional switch and the second bidirectional switch can be ensured, so that the pin occupation problem of the substrate controller can be reduced, and the circuit layout effect is optimized.
In a possible implementation, as shown in fig. 4, the path selecting unit 11 further includes: a combiner 115;
an output terminal of the combiner 115 is connected to an input terminal of the splitter 114, a first input terminal 1151 of the combiner 115 is connected to the substrate controller 111 of the local node, and a second input terminal 1152 of the combiner 115 is connected to the substrate controller 111 of the second external node.
It should be noted that, in fig. 4, for convenience of description, the single 8-way mode is taken as an example of description in the figure, and it can be seen in the figure that since a substrate controller and a controller are also provided in a second external node (i.e., node 2), in practical application, the combiner may also be provided in the node 2, and is used to obtain memory data in node 0 when the node 2 is taken as a local node, and when the combiner is also provided in the node 2, the setting manner of the combiner is consistent with that in node 0 in the foregoing description of this example, and is not repeated here.
Through the arrangement of the combiner, when the local node is used as a main node, other nodes provided with the substrate controller can be enabled to acquire the memory data of the local node to be used as data verification, and the data accuracy of the substrate controller in the process of acquiring the memory data is further ensured.
In a possible implementation, as shown in fig. 5, the path selecting unit 11 further includes: a third bidirectional switch 116;
the stationary terminal of the third bidirectional switch 116 is connected to the substrate controller 111, one moving terminal of the third bidirectional switch 116 is connected to the first input terminal 1151 of the combiner 115, and the other moving terminal of the third bidirectional switch 116 is connected to the input terminal of the splitter 114.
Further, a control terminal of the third bidirectional switch 116 is connected to the controller 121 of the mode control unit 12, and the third bidirectional switch 116 is configured to close a target moving terminal of a corresponding mode signal based on the control of the controller 121.
In a specific implementation process, the target moving end includes a first target moving end and a second target moving end, where the first target moving end is a moving end of the third bidirectional switch 116 connected to the first input end 1151 of the combiner 115; the second target moving end is a moving end of the third bidirectional switch 116 connected to the input end of the splitter 114;
based on this, when the mode needs to be switched to the single-8-way mode, the controller 121 may be configured to control the first target moving end in the third bidirectional switch 116 to be closed when the mode signal is the single-8-way mode;
when the mode needs to be switched to the dual-4-way mode, the controller 121 may be further configured to control the second target active terminal in the third bidirectional switch 116 to be closed when the mode signal is the dual-4-way mode, so as to access the memory of the server of the local node by bypassing the combiner 115.
Therefore, different movable ends can be set and closed based on different modes through the setting mode of the third bidirectional switch, the purpose that the memory of the server of the local node is directly accessed by bypassing the combiner in the double-4-path mode is achieved, and the data access efficiency is improved.
As a specific implementation of the apparatus described in the above example, as shown in fig. 6, a dual 4-way mode is taken as an example here:
under a double-4-path mode, nodes 0 and 1 form a system, wherein the node 0 (local node) is a main node; the nodes 2 and 3 form a system, the node 2 (another main node) is a main node, and the two systems are not interfered with each other and are independent two systems.
For nodes 0 and 1 forming a system, a Baseboard Management Controller (BMC) on the node 0 is used as an active terminal, and memories on the nodes 0 and 1 are used as two slave terminals, respectively. As shown in fig. 4, the controllers on nodes 0 and 2 now control the unidirectional switches on the respective nodes to be non-conductive. As the active end of each system, the substrate controller may control the first bidirectional switch on the local node, so that the substrate controller may switch to access the memory device, and as a slave node of the local node, the second bidirectional switch in the first external node is also controlled by the substrate controller to close the active end of the substrate controller, thereby forming a path, so that the substrate controller can access the memory of the first external node.
Through the design of the scheme, the substrate controller can respectively access the two slave end devices through I3C protocol communication in the process of server maintenance or self-checking. The substrate controller avoids a combiner which is not needed to be used in a double-4-path mode through a bidirectional switch, and is directly connected with a memory of a local node and a memory of a first external node subordinate to the local node through a splitter. Wherein the combiner may be a 2. The splitter may be a 1. Since the CPU in each node also needs to communicate with the memory, the control process of the first bidirectional switch is also controlled by the substrate controller on the compute node when performing server maintenance or self-test.
The communication control device of the multi-node server provided by the embodiment of the invention comprises a path selection unit and a mode control unit, wherein the path selection unit is connected with the mode control unit; the path selection unit is respectively connected with a processor of the server and a memory of the server and used for selecting one path from a first path and a second path in a target node to be conducted, the target node comprises a local node and a first external node, the first path is a path for connecting the processor of the server and the memory of the server, and the second path is a path for connecting a substrate controller in the path selection unit and the memory of the server; the mode control unit is used for being connected with a selector of a server outside the local node and determining the connection and disconnection of a third path according to a mode signal sent by the selector of the server, wherein the third path is a communication path between the substrate controller in the path selection unit and a second external node, and therefore switching of access paths of the substrate controller is achieved. The path selection unit can select a required path from the first path and the second path to conduct based on the control of the substrate controller, so that the connection between the processor and the memory can be ensured in the operation stage of the server, and the operation of the server is met; in the maintenance stage of the server, the substrate controller is connected with the memories of the local node and the external sub-node, so that the function of detecting the server by acquiring the memory data by using the substrate controller is achieved. In addition, the mode control unit can determine the on and off of the third path according to the signal mode sent by the external selector, and the third path is a connection path between the substrate controller in the path selection unit and another node outside the node, so that the function of allowing the substrate control unit to acquire data of other nodes outside the non-subnode based on the mode is ensured.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; and the modifications, changes or substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. Are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A communication control apparatus of a multi-node server, comprising: the system comprises a path selection unit and a mode control unit, wherein the path selection unit is connected with the mode control unit;
the path selection unit is respectively connected with a processor of the server and a memory of the server and used for selecting one path from a first path and a second path in a target node to be conducted, the target node comprises a local node and a first external node, the first path is a path for connecting the processor of the server and the memory of the server, and the second path is a path for connecting a substrate controller in the path selection unit and the memory of the server;
the mode control unit is used for being connected with a selector of a server outside the local node and determining the connection and disconnection of a third path according to a mode signal sent by the selector of the server, wherein the third path is a communication path between a substrate controller in the path selection unit and a second external node.
2. The communication control apparatus of a multinode server according to claim 1, wherein a path selection unit and the mode control unit are provided in the second external node;
the mode control unit is further configured to control the third path to be turned on when the mode signal sent by the selector of the server is in a single 8-way mode, so that the substrate controller can access the memory of the server in the second external node through the third path.
3. The communication control apparatus of a multi-node server according to claim 1, wherein a path selection unit and the mode control unit are provided in the second external node;
the mode control unit is further configured to control the third path to be turned off when the mode signal sent by the selector of the server is the dual 4-way mode, so as to prevent the substrate controller from accessing the memory of the server in the second external node through the third path.
4. The communication control apparatus of a multi-node server according to any of claims 1 to 3, wherein the mode control unit includes:
the controller is connected with the one-way switch;
the one-way switch is arranged in a third path where the substrate controller is connected with a second external node, and the controller is used for controlling the connection state of the communication path of the substrate controller and the external node by controlling the on or off of the one-way switch.
5. The communication control apparatus of a multi-node server according to any of claims 1 to 3, wherein the path selection unit includes:
the system comprises a substrate controller, a first bidirectional switch and a second bidirectional switch, wherein the first bidirectional switch and the substrate controller are arranged at a local node, and the second bidirectional switch is arranged at a first external node;
the two movable ends of the first bidirectional switch are respectively connected with the substrate controller and the processor of the server of the local node; one of the moving ends of the first bidirectional switch is connected with the substrate controller and used for selecting a conducting path from the two moving ends after being controlled by the substrate controller so as to control the conduction of a corresponding path in a first path and a second path in the local node;
the fixed end of the second bidirectional switch is connected with the memory of the server of the first external node, and the two movable ends of the second bidirectional switch are respectively connected with the substrate controller and the processor of the server of the first external node; one of the moving ends of the second bidirectional switch is connected with the substrate controller and used for selecting a conducting path from the two moving ends after being controlled by the substrate controller so as to control the conduction of a first path in the first external node and a corresponding path in the second path.
6. The communication control apparatus of a multinode server according to claim 5, wherein the path selection unit further comprises: a splitter;
the input end of the shunt is connected with the substrate controller, one output end of the shunt is connected with the movable end of the first bidirectional switch, and the other output end of the shunt is connected with the movable end of the second bidirectional switch.
7. The communication control apparatus of a multinode server according to claim 5, wherein the path selection unit further comprises: a combiner;
the output end of the combiner is connected with the input end of the shunt, the first input end of the combiner is connected with the substrate controller of the local node, and the second input end of the combiner is connected with the substrate controller of the second external node.
8. The communication control apparatus of a multinode server according to claim 5, wherein the path selection unit further comprises: a third bidirectional switch;
the fixed end of the third bidirectional switch is connected with the substrate controller, one movable end of the third bidirectional switch is connected with the first input end of the combiner, and the other movable end of the third bidirectional switch is connected with the input end of the shunt.
9. The communication control apparatus of a multi-node server according to claim 8, wherein a control terminal of the third bidirectional switch is connected to the controller of the mode control unit, and the third bidirectional switch is configured to close a target active terminal of a corresponding mode signal based on control of the controller.
10. The communication control apparatus of a multinode server according to claim 9,
the target moving end comprises a first target moving end and a second target moving end, wherein the first target moving end is a moving end connected with the first input end of the combiner in the third bidirectional switch; the second target moving end is a moving end connected with the input end of the shunt in the third bidirectional switch;
the controller is used for controlling the first target moving end in the third bidirectional switch to be closed when the mode signal is in the single-8-path mode;
the controller is further configured to control the second target moving end in the third bidirectional switch to be closed when the mode signal is in the dual 4-way mode, so as to access the memory of the server of the local node by bypassing the combiner.
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Citations (1)

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Publication number Priority date Publication date Assignee Title
CN110213065A (en) * 2018-02-28 2019-09-06 杭州宏杉科技股份有限公司 A kind of method and device of path switching

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110213065A (en) * 2018-02-28 2019-09-06 杭州宏杉科技股份有限公司 A kind of method and device of path switching

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