CN114780472A - Host and PCIe device decoupling method, device, equipment and storage medium - Google Patents

Abstract

The present application discloses a method, device, device and storage medium for decoupling a host from a PCIe device, and relates to the field of computer technology, including: separating a PCIe expansion module from a host to obtain an independent PCIe expansion module; in the independent PCIe expansion module, Connect the PCIe switch and the data processor to obtain the target PCIe expansion module, and connect the target PCIe expansion module to the Ethernet through the data processor; connect the host to the Ethernet through the built-in OCP network card, and implement it through the Ethernet matrix Communication between the target PCIe expansion module and the host. In the present application, a data processor connected to the PCIe switch is added to the PCIe expansion module, and then the PCIe protocol is converted into an Ethernet protocol through the data processor, and the communication and communication between the decoupled PCIe expansion module and the host are realized through the Ethernet matrix. Resource sharing can reduce the design difficulty of the host, and facilitate the expansion and independent upgrade of motherboards and PCIe devices.

Description

A method, apparatus, device and storage medium for decoupling a host from a PCIe device

technical field

The present application relates to the field of computer technologies, and in particular, to a method, apparatus, device, and storage medium for decoupling a host from a PCIe device.

Background technique

PCIe (Peripheral Component Interconnect-express, peripheral device high-speed connection standard) is a connection standard proposed on the basis of PCI to achieve higher-speed communication between CPU (Central Processing Unit, central processing unit) and peripheral devices, and It has become the most widely used expansion bus in current computer systems. PCIe belongs to high-speed serial point-to-point dual-channel high-bandwidth transmission. The connected devices allocate exclusive channel bandwidth and do not share bus bandwidth. It mainly supports active power management, error reporting, end-to-end reliable transmission, hot plugging and quality of service ( QoS, Quality of Service) and other functions.

In order to reduce the area of the mainboard, reduce the cost of the mainboard, and realize the independent upgrade of the PCIe device and the mainboard, the PCIe device is usually decoupled from the mainboard. For example, for the design of the hard disk backplane in a general server, the PCIe lane (lane) of the central processing unit is connected to the hard disk backplane, and the PCIe Switch (PCIe switch) is connected, and then more PCIe interfaces are extended through the PCIe Switch. , so as to realize the expansion of the number of hard disks, increase flexibility and expandability, and reduce the difficulty of motherboard design. However, the current decoupling of PCIe devices is not complete: on the one hand, some PCIe slots are still placed on the motherboard, such as OCPNIC (Open Compute Project Network Interface Card, Open Compute Project Network Interface Card) card slot, GPU (Graphic Processing Unit) , graphics processor) card slot, sound card slot, etc. As the demand for PCIe resources increases, more PCIe interfaces will be expanded; on the other hand, the decoupling board between the host and the PCIe device is still placed in the host. Binding with the host, the more PCIe switches, PCIe buses, PCIe slots, etc. are placed in the host, the larger the volume of the host is occupied, which is not conducive to the expansion of the host, and increases the difficulty of the heat dissipation design of the host.

Therefore, how to decouple the PCIe device from the motherboard and achieve maximum flexibility and scalability is a technical problem that needs to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

In view of this, the purpose of this application is to provide a method, device, device and storage medium for decoupling a host and a PCIe device, which can realize the decoupling of the PCIe device and the host, reduce the design difficulty of the host, and facilitate the expansion of the motherboard and the PCIe device. and independent upgrades and maximize scalability. Its specific plan is as follows:

In a first aspect, the present application discloses a method for decoupling a host from a PCIe device, including:

The PCIe expansion module is separated from the host to obtain an independent PCIe expansion module; the independent PCIe expansion module includes a PCIe switch and a plurality of PCIe terminal devices connected to the PCIe switch through a PCIe connector;

In the independent PCIe expansion module, the PCIe switch is connected to a data processor to obtain a target PCIe expansion module, and the target PCIe expansion module is connected to the Ethernet through the data processor;

The host is connected to the Ethernet through the built-in OCP network card, and the communication between the target PCIe expansion module and the host is implemented through an Ethernet matrix.

Optionally, the connecting the target PCIe expansion module to the Ethernet through the data processor includes:

The PCIe switch, the PCIe connector and the PCIe switch in the target PCIe expansion module are connected to the Ethernet through the network port provided externally by the data processor.

Optionally, the method for decoupling the host from the PCIe device further includes:

The number of the data processors and the number of the PCIe switches are adjusted respectively according to the bandwidth of the data processor and the bandwidth of the PCIe switch.

Optionally, the hardware structure of the target PCIe expansion module is composed of a plurality of PCIe connector slots, a PCIe printed circuit board, a target chip and a cold plate; wherein, the target chip includes a PCIe switch chip, a data processor chip and a management chip.

Optionally, the plurality of PCIe connector slots and the target chip are located on the front side of the PCIe printed circuit board, and the cold plate is located on the back side of the PCIe printed circuit board.

Optionally, the method for decoupling the host from the PCIe device further includes:

The plurality of PCIe connector slots, the target chip, the cold plate, the power supply and the heat sink are integrated on the PCIe printed circuit board using a compact stack structure.

Optionally, the method for decoupling the host from the PCIe device further includes:

Acquire a plurality of the target PCIe expansion modules, and implement interconnection and communication between the multiple target PCIe expansion modules and between the multiple target PCIe expansion modules and the host through the Ethernet.

In a second aspect, the present application discloses an apparatus for decoupling a host from a PCIe device, including:

A separation module for separating the PCIe expansion module from the host to obtain an independent PCIe expansion module; the independent PCIe expansion module includes a PCIe switch and a plurality of PCIe terminal devices connected to the PCIe switch through a PCIe connector;

a connection module for connecting the PCIe switch and the data processor in the independent PCIe expansion module to obtain a target PCIe expansion module, and connecting the target PCIe expansion module to the Ethernet through the data processor ;

The communication module is used for connecting the host to the Ethernet through the built-in OCP network card, and realizing the communication between the target PCIe expansion module and the host through the Ethernet matrix.

In a third aspect, the present application discloses an electronic device, including a processor and a memory; wherein, when the processor executes a computer program stored in the memory, the foregoing method for decoupling a host and a PCIe device is implemented.

In a fourth aspect, the present application discloses a computer-readable storage medium for storing a computer program; wherein, when the computer program is executed by a processor, the aforementioned method for decoupling a host and a PCIe device is implemented.

It can be seen that in the present application, the PCIe expansion module is first separated from the host to obtain an independent PCIe expansion module, and then in the independent PCIe expansion module, the PCIe switch is connected to the data processor to obtain the target PCIe expansion module, and through all the PCIe expansion modules The data processor connects the target PCIe expansion module to the Ethernet, then connects the host to the Ethernet through the built-in OCP network card, and realizes the connection between the target PCIe expansion module and the Ethernet through the Ethernet matrix. communication with the host. In the present application, a data processor connected to a PCIe switch is added to the PCIe expansion module, and then the PCIe protocol is converted into an Ethernet protocol through the data processor, and the communication and communication between the decoupled PCIe expansion module and the host are realized through the Ethernet matrix. Resource sharing can reduce the design difficulty of the host, facilitate the expansion and independent upgrade of motherboards and PCIe devices, maximize scalability, and can be quickly introduced to the market with flexible applications.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only It is an embodiment of the present application. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without any creative effort.

1 is a flowchart of a method for decoupling a host and a PCIe device disclosed in the present application;

2 is a schematic diagram of a specific PCIe system topology disclosed in the application;

3 is a schematic topology diagram of a specific decoupled PCIe expansion module disclosed in the present application;

4 is a schematic diagram of the hardware structure of a specific decoupled PCIe expansion module disclosed in the present application;

5 is a schematic structural diagram of a device for decoupling a host and a PCIe device disclosed in the present application;

FIG. 6 is a structural diagram of an electronic device disclosed in this application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

An embodiment of the present application discloses a method for decoupling a host from a PCIe device. Referring to FIG. 1 , the method includes:

Step S11: Separate the PCIe expansion module from the host to obtain an independent PCIe expansion module; the independent PCIe expansion module includes a PCIe switch and a plurality of PCIe terminal devices connected to the PCIe switch through PCIe connectors.

In this embodiment, a PCIe expansion module including a PCIe switch and a plurality of PCIe terminal devices (ie, PCIe Endpoints) connected to the above-mentioned PCIe switch through PCIe connectors (ie, PCIe Connectors) is first separated from the host to obtain an independent PCIe expansion module. module. It is understandable that the PCIe bus adopts an end-to-end connection method, and a PCIe link can only be connected to one device. Therefore, when multiple PCIe devices need to be connected and used in the host, the PCIe link must be extended, and this extended device has one upstream port and multiple downstream ports. As shown in Figure 2, the PCIe resources in the CPU of the host are connected through the Root Complex. The root complex can directly mount PCIe terminal devices. Resources are limited. In order to expand PCIe resources, PCIe switches are usually used to expand PCIe ports, and a PCIe port is expanded into several. The ports close to the complex are called upstream ports, and the extended ports are called downstream ports. Mount multiple PCIe terminal devices or other PCIe switches and manage them. The root complex and the PCIe switch are connected through the PCIe bus, and the PCIe expansion module is separated from the host and will be connected to the PCIe bus. The PCIe switch and multiple PCIe end devices connected to the PCIe switch are separated from the host as an independent module.

In a specific implementation manner, the hardware structure of the target PCIe expansion module may be composed of multiple PCIe connector slots, a PCIe printed circuit board (ie PCB, Printed Circuit Board), a target chip and a cold plate; wherein, The target chip includes a PCIe switch chip, a data processor chip, and a management chip, and the management chip includes but is not limited to a BMC (Baseboard Management Controller, baseboard management controller) chip and the like.

In order to further maximize the utilization of space and realize a miniaturized module structure, the method for decoupling the host from the PCIe device may further include: using a compact stack structure to connect the multiple PCIe connector slots, the target chip, The cold plate, power supply and heat sink are integrated on the PCIe printed circuit board. That is, a stack structure is used to compactly integrate multiple PCIe connector slots, target chips, cold plates, power supplies, and heat sinks into a smaller volume.

In a specific implementation manner, the above-mentioned multiple PCIe connector slots and the above-mentioned target chip may be placed on the front side of the PCIe printed circuit board, and the cold plate may be placed on the backside of the PCIe printed circuit board. Specifically, a liquid-cooling board can be placed on the back of the PCIe printed circuit board, and a power supply can be integrated on the back of the liquid-cooling board to dissipate heat and supply power to the target chip and the corresponding PCIe device, and further , in order to achieve the optimal heat dissipation effect, the liquid cooling board and the PCIe printed circuit board may be closely attached together.

Step S12: In the independent PCIe expansion module, connect the PCIe switch to a data processor to obtain a target PCIe expansion module, and connect the target PCIe expansion module to the Ethernet through the data processor.

In this embodiment, after the PCIe expansion module is separated from the host to obtain an independent PCIe expansion module, a data processor (DPU, Data Processing Unit) may be added to the independent PCIe expansion module, and then the PCIe switch and the data processing unit may be added. The above-mentioned target PCIe expansion module is connected to the Ethernet (Ethernet) through the data processor.

In this embodiment, the connecting the target PCIe expansion module to the Ethernet through the data processor may specifically include: connecting the target PCIe expansion module to an external network port provided by the data processor. The PCIe switch, the PCIe connector and the PCIe switch are connected to Ethernet. That is, after separating the PCIe expansion module from the host to obtain an independent PCIe expansion module, the data processor will create an external network port on the above-mentioned independent PCIe expansion module, through which the PCIe resource, that is, the target PCIe expansion module can be expanded. The PCIe switch, PCIe connector and PCIe switch in the module are connected to the Ethernet.

Step S13: The host is connected to the Ethernet through the built-in OCP network card, and the communication between the target PCIe expansion module and the host is realized through an Ethernet matrix.

In this embodiment, after the target PCIe expansion module is connected to the Ethernet through the data processor, the data processor may further connect the OCP network card (such as an OCP NIC 3.0 network card) to the The host is connected to the above-mentioned Ethernet, and then the interconnection and communication between the above-mentioned target PCIe expansion module and the above-mentioned host are realized through an Ethernet fabric, that is, data sharing and interaction between the PCIe expansion module and the host are realized.

In a specific implementation manner, in order to provide the host with maximum resource expansion, the method for decoupling the host from the PCIe device may further include: acquiring a plurality of the target PCIe expansion modules, and implementing them through the Ethernet Interconnection and communication between multiple target PCIe expansion modules and between multiple target PCIe expansion modules and the host. That is, multiple PCIe expansion modules are used to realize the pooling of PCIe devices, all PCIe devices are connected to the Ethernet through PCIe switches and data processors, and multiple PCIe expansion modules and multiple PCIe expansion modules are implemented in the Ethernet. The interconnection and communication between the expansion module and the host, so as to provide the host with maximum resource expansion. In addition, if the number of network ports provided by the data processor is increased, multiple PCIe expansion modules can also be connected to multiple hosts, so that multiple hosts can access multiple PCIe expansion modules (PCIe resource pools), that is, to realize PCIe resources. Sharing among multiple hosts.

Further, the method for decoupling the host from the PCIe device may further include: respectively adjusting the number of the data processors and the number of the PCIe switches according to the bandwidth of the data processor and the bandwidth of the PCIe switch . It can be understood that the wider the bandwidth of the data processor, the more data that can be processed, and the more the corresponding number of data processors, therefore, the number of data processors can be adjusted according to the bandwidth of the data processor. Similarly, the number of PCIe switches can be adjusted according to the bandwidth of the PCIe switches.

It can be seen that in the embodiment of the present application, the PCIe expansion module is first separated from the host to obtain an independent PCIe expansion module, and then in the independent PCIe expansion module, the PCIe switch is connected with the data processor to obtain the target PCIe expansion module, and The target PCIe expansion module is connected to the Ethernet through the data processor, then the host is connected to the Ethernet through the built-in OCP network card, and the target PCIe expansion module is implemented through the Ethernet matrix communication with the host. In this embodiment of the present application, a data processor connected to a PCIe switch is added to the PCIe expansion module, and then the PCIe protocol is converted into an Ethernet protocol through the data processor, and the decoupled PCIe expansion module and the host are realized through the Ethernet matrix. Communication and resource sharing can reduce the design difficulty of the host, facilitate the expansion and independent upgrade of motherboards and PCIe devices, maximize the scalability, and can be quickly introduced to the market with flexible applications.

Referring to FIG. 3, FIG. 3 shows a specific topology diagram of a PCIe expansion module after the host is decoupled from the PCIe device, wherein the decoupled host includes a central processing unit, a root complex, and an OCP network card, and The central processing unit is directly connected to the root complex, and the root complex can be connected to multiple OCP network cards; the decoupled PCIe expansion module (ie, independent PCIe expansion module) includes a data processor, a PCIe switch, and multiple connected PCIe terminal devices , wherein the data processor is directly connected to the PCIe switch through the internal port, and can be connected to the host through the external network port. Specifically, the connection between the decoupled host and the decoupled PCIe expansion module can be realized through the Ethernet matrix. . In a specific implementation, referring to FIG. 4 , FIG. 4 shows a schematic diagram of the hardware structure of a specific decoupled PCIe expansion module. The module consists of a plurality of PCIe connector slots, a PCIe printed circuit It consists of four parts: board, target chip (including PCIe switch chip, data processor chip, baseboard management controller chip) and cold plate. The module adopts a compact stack structure, which integrates components such as heat dissipation, power supply, and PCIe resources into a smaller volume, maximizes the use of space, and realizes a miniaturized module structure. In Figure 4, 10 PCIe connector slots are placed on the front of the PCIe printed circuit board, which are downstream ports for PCIe resource expansion, which can connect 10 × 16 slots of PCIe terminal devices, or more × 2 slots, PCIe terminal devices with ×4 slots and ×8 slots. In addition, two network ports connected by the data processor are placed on the front of the PCIe printed circuit board to realize interconnection and communication between the decoupled PCIe expansion module and the host. The PCIe switch chip, data processor chip, and baseboard management controller chip are placed on the back of the PCIe printed circuit board. The PCIe switch chip is used to expand the downstream ports of PCIe. The data processor chip provides the PCIe root complex (ie, the upstream port), which can The PCIe protocol is converted to the Ethernet protocol, and the baseboard management controller chip can be used for PCIe device management. By routing wires in the PCIe printed circuit board, the connection with the upstream port of the PCIe, the connection between the downstream port and the management of the downstream port can be realized. The back of the PCIe printed circuit board is a liquid-cooled cold plate, which is used to dissipate heat and supply power to the target chip and PCIe devices (the power supply can be integrated on the back of the cold plate). For optimal heat dissipation, the cold plate and PCIe printed circuit board can be placed close together. Further, using multiple independent PCIe expansion modules can also realize the pooling of PCIe resources. Specifically, all PCIe devices are connected to the Ethernet through PCIe switches and data processors, and the interconnection between multiple independent PCIe expansion modules and between multiple independent PCIe expansion modules and the host can be realized in the Ethernet. Communicate with to provide maximum resource expansion for the host. In addition, if the number of network ports is increased, the independent PCIe expansion module can also be connected to multiple hosts, so that multiple hosts can access the PCIe resource pool, that is, the sharing of PCIe resources among multiple hosts is realized.

It can be seen from the above that the technical solution of the present application decouples the PCIe device from the host design and pools the PCIe resources. This independent expansion module conforms to the current trend of modularization and resource pooling, and reduces the host's cost. The design is difficult, and it is convenient for the respective expansion and independent replacement of the host and PCIe resources, which can be quickly introduced to the market and have flexible applications. The connection between the independent PCIe expansion module and the host is realized through Ethernet, which facilitates the access of multiple hosts to the PCIe resource pool and realizes resource sharing. In addition, the stacking structure is adopted, and PCIe devices are stacked with heat dissipation, power supply and other devices to form an independent small PCIe expansion module. Multiple independent PCIe expansion modules can be placed in one chassis, thereby maximizing scalability.

Correspondingly, an embodiment of the present application also discloses an apparatus for decoupling a host from a PCIe device. Referring to FIG. 5 , the apparatus includes:

The separation module 11 is used to separate the PCIe expansion module from the host to obtain an independent PCIe expansion module; the independent PCIe expansion module includes a PCIe switch and a plurality of PCIe terminal devices connected to the PCIe switch through a PCIe connector;

The connection module 12 is used for connecting the PCIe switch and the data processor in the independent PCIe expansion module to obtain a target PCIe expansion module, and connecting the target PCIe expansion module to the Ethernet through the data processor network;

The communication module 13 is configured to connect the host to the Ethernet through the built-in OCP network card, and implement the communication between the target PCIe expansion module and the host through an Ethernet matrix.

For the specific work flow of the above modules, reference may be made to the corresponding content disclosed in the foregoing embodiments, which will not be repeated here.

It can be seen that in the embodiment of the present application, the PCIe expansion module is first separated from the host to obtain an independent PCIe expansion module, and then in the independent PCIe expansion module, the PCIe switch is connected with the data processor to obtain the target PCIe expansion module , and connect the target PCIe expansion module to the Ethernet through the data processor, then connect the host to the Ethernet through the built-in OCP network card, and realize the target PCIe through the Ethernet matrix Communication between expansion modules and the host. In this embodiment of the present application, a data processor connected to a PCIe switch is added to the PCIe expansion module, and then the PCIe protocol is converted into an Ethernet protocol through the data processor, and the decoupled PCIe expansion module and the host are realized through the Ethernet matrix. Communication and resource sharing can reduce the design difficulty of the host, facilitate the expansion and independent upgrade of motherboards and PCIe devices, maximize the scalability, and can be quickly introduced to the market with flexible applications.

In some specific embodiments, the connection module 12 may specifically include:

An Ethernet access unit, configured to connect the PCIe switch, the PCIe connector and the PCIe switch in the target PCIe expansion module to the Ethernet through a network port provided by the data processor.

In some specific embodiments, the apparatus for decoupling the host from the PCIe device may further include:

A quantity adjustment unit, configured to adjust the quantity of the data processors and the quantity of the PCIe switches respectively according to the bandwidth of the data processors and the bandwidth of the PCIe switches.

In some specific embodiments, the hardware structure of the target PCIe expansion module is composed of a plurality of PCIe connector slots, a PCIe printed circuit board, a target chip and a cold plate; wherein the target chip includes a PCIe switch chip, a data processing device chip and management chip.

In some specific embodiments, the plurality of PCIe connector slots and the target chip are located on the front side of the PCIe printed circuit board, and the cold plate is located on the back side of the PCIe printed circuit board.

In some specific embodiments, the apparatus for decoupling the host from the PCIe device may further include:

An integration unit for integrating the plurality of PCIe connector slots, the target chip, the cold plate, the power supply and the heat sink on the PCIe printed circuit board in a compact stack structure.

In some specific embodiments, the apparatus for decoupling the host from the PCIe device may further include:

The interconnection and communication unit is used to obtain a plurality of the target PCIe expansion modules, and realize the communication between the multiple target PCIe expansion modules and between the multiple target PCIe expansion modules and the host through the Ethernet. interconnection and communication.

Further, an embodiment of the present application also discloses an electronic device. FIG. 6 is a structural diagram of an electronic device 20 according to an exemplary embodiment, and the content in the figure should not be considered as any limitation on the scope of application of the present application.

FIG. 6 is a schematic structural diagram of an electronic device 20 according to an embodiment of the present application. The electronic device 20 may specifically include: at least one processor 21 , at least one memory 22 , a power supply 23 , a communication interface 24 , an input and output interface 25 and a communication bus 26 . Wherein, the memory 22 is used to store a computer program, and the computer program is loaded and executed by the processor 21 to implement relevant steps in the method for decoupling a host from a PCIe device disclosed in any of the foregoing embodiments. In addition, the electronic device 20 in this embodiment may specifically be an electronic computer.

In this embodiment, the power supply 23 is used to provide working voltage for each hardware device on the electronic device 20; the communication interface 24 can create a data transmission channel between the electronic device 20 and external devices, and the communication protocol it follows is applicable Any communication protocol in the technical solution of the present application is not specifically limited here; the input and output interface 25 is used to obtain external input data or output data to the outside world, and its specific interface type can be selected according to specific application needs, here No specific limitation is made.

In addition, as a carrier for resource storage, the memory 22 can be a read-only memory, a random access memory, a magnetic disk or an optical disk, etc. The resources stored on it can include an operating system 221, a computer program 222, etc., and the storage method can be short-term storage or permanent storage. .

The operating system 221 is used to manage and control various hardware devices and computer programs 222 on the electronic device 20, which may be Windows Server, Netware, Unix, Linux, and the like. The computer program 222 may further include a computer program that can be used to complete other specific tasks in addition to the computer program that can be used to complete the method for decoupling the host and the PCIe device executed by the electronic device 20 disclosed in any of the foregoing embodiments.

Further, the present application also discloses a computer-readable storage medium for storing a computer program; wherein, when the computer program is executed by a processor, the aforementioned method for decoupling a host and a PCIe device is implemented. For the specific steps of the method, reference may be made to the corresponding content disclosed in the foregoing embodiments, which will not be repeated here.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments may be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method.

Professionals may further realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two, in order to clearly illustrate the possibilities of hardware and software. Interchangeability, the above description has generally described the components and steps of each example in terms of functionality. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

The steps of a method or algorithm described in conjunction with the embodiments disclosed herein may be directly implemented in hardware, a software module executed by a processor, or a combination of the two. A software module can be placed in random access memory (RAM), internal memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other in the technical field. in any other known form of storage medium.

Finally, it should also be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply these entities or that there is any such actual relationship or sequence between operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

A method, device, device, and storage medium for decoupling a host from a PCIe device provided by the present application have been described in detail above. The principles and implementations of the present application are described with specific examples in this article. It is only used to help understand the method of the present application and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific embodiments and application scope. In summary, The contents of this specification should not be construed as limiting the application.

Claims (10)

1. a host and PCIe device decoupling method, is characterized in that, comprising: The PCIe expansion module is separated from the host to obtain an independent PCIe expansion module; the independent PCIe expansion module includes a PCIe switch and a plurality of PCIe terminal devices connected to the PCIe switch through a PCIe connector; In the independent PCIe expansion module, the PCIe switch is connected to a data processor to obtain a target PCIe expansion module, and the target PCIe expansion module is connected to the Ethernet through the data processor; The host is connected to the Ethernet through the built-in OCP network card, and the communication between the target PCIe expansion module and the host is implemented through an Ethernet matrix. 2. The method for decoupling a host from a PCIe device according to claim 1, wherein the connecting the target PCIe expansion module to the Ethernet through the data processor comprises: The PCIe switch, the PCIe connector and the PCIe switch in the target PCIe expansion module are connected to the Ethernet through the network port provided externally by the data processor. 3. The method for decoupling a host and a PCIe device according to claim 1, further comprising: The number of the data processors and the number of the PCIe switches are adjusted respectively according to the bandwidth of the data processor and the bandwidth of the PCIe switch. 4. The method for decoupling a host computer from a PCIe device according to claim 1, wherein the hardware structure of the target PCIe expansion module is composed of a plurality of PCIe connector slots, a PCIe printed circuit board, a target chip and a cold plate ; wherein, the target chip includes a PCIe switch chip, a data processor chip and a management chip. 5 . The method for decoupling a host from a PCIe device according to claim 4 , wherein the plurality of PCIe connector slots and the target chip are located on the front side of the PCIe printed circuit board, and the cold plate is located on the front side of the PCIe printed circuit board. 6 . the back of the PCIe printed circuit board. 6. The method for decoupling a host and a PCIe device according to claim 5, further comprising: The plurality of PCIe connector slots, the target chip, the cold plate, the power supply and the heat sink are integrated on the PCIe printed circuit board using a compact stack structure. 7. The method for decoupling a host from a PCIe device according to any one of claims 1 to 6, further comprising: Acquire a plurality of the target PCIe expansion modules, and implement interconnection and communication between the multiple target PCIe expansion modules and between the multiple target PCIe expansion modules and the host through the Ethernet. 8. A device for decoupling a host and a PCIe device, comprising: A separation module for separating the PCIe expansion module from the host to obtain an independent PCIe expansion module; the independent PCIe expansion module includes a PCIe switch and a plurality of PCIe terminal devices connected to the PCIe switch through a PCIe connector; a connection module for connecting the PCIe switch and the data processor in the independent PCIe expansion module to obtain a target PCIe expansion module, and connecting the target PCIe expansion module to the Ethernet through the data processor ; The communication module is used for connecting the host to the Ethernet through the built-in OCP network card, and realizing the communication between the target PCIe expansion module and the host through the Ethernet matrix. 9. An electronic device, comprising a processor and a memory; wherein, when the processor executes a computer program stored in the memory, the host and the PCIe device according to any one of claims 1 to 7 are implemented Decoupling method. 10. A computer-readable storage medium, characterized in that it is used for storing a computer program; wherein, when the computer program is executed by a processor, the decoupling between the host and the PCIe device according to any one of claims 1 to 7 is realized method.

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