CN113746754B - Data transmission method, device, equipment and storage medium - Google Patents
Data transmission method, device, equipment and storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/26—Flow control; Congestion control using explicit feedback to the source, e.g. choke packets
- H04L47/263—Rate modification at the source after receiving feedback
Abstract
The invention discloses a data transmission method, a device, equipment and a storage medium; in the scheme, when the host device and the FPGA acceleration device send data to each other, not only the data to be sent currently, but also the historical data are needed to be sent, by the mode, the host device and the FPGA acceleration device can acquire related data from the historical commands and the historical command feedback in the command group and the command feedback group which are sent subsequently even if overtime and packet loss occur during data transmission, the re-acquisition is avoided, and the data transmission efficiency is improved.
Description
Technical Field
The present invention relates to the field of data transmission technologies, and in particular, to a data transmission method, apparatus, device, and storage medium.
Background
OpenCL (Open Computing Language ) is a framework for programming heterogeneous platforms, which may be composed of CPUs (central processing unit, central processing units), GPUs (graphics processing unit, graphics processors) or other types of processors. OpenCL consists of a language (C99-based) for writing kernels (functions running on an OpenCL device) and a set of APIs (Application Programming Interface, application program interface) for defining and controlling the platform. OpenCL provides a parallel computing mechanism based on task segmentation and data segmentation. Currently, the trend has been to accelerate the distributed management and cloud management of devices. The FPGA (Field Programmable GATE ARRAY ) cloud is the core computing power of cloud computing and is also a novel industry solution. Firstly, the system structure of the heterogeneous computing platform improves computing performance, energy efficiency ratio and computing instantaneity through design means such as parallelism, pipelining and the like, and carries out hardware acceleration processing on applications. In the standard framework of OpenCL, the computing unit that invokes the FPGA is a popular use scheme at present.
At present, the host device and the FPGA acceleration device perform data communication through a network, when the network state is smooth and stable, the working mode can work normally, but when the network is congested or unstable in transmission, serious overtime and packet loss occur. This results in reduced efficiency in data and command transfer between the host and FPGA acceleration devices.
Therefore, how to avoid serious overtime and packet loss phenomena of the host device and the FPGA acceleration device when transmitting data, and improve the data transmission efficiency is a problem to be solved by the person skilled in the art.
Disclosure of Invention
The invention aims to provide a data transmission method, a device, equipment and a storage medium, so as to avoid serious overtime and packet loss phenomena when a host device and an FPGA acceleration device transmit data, and improve the data transmission efficiency.
In order to achieve the above object, the present invention provides a data transmission method, including:
the host device determines each command to be sent to the FPGA acceleration device;
When the host equipment sends a current command, generating a command group according to the current command and a historical command, and sending the command group to the FPGA acceleration equipment;
The host device receives a command feedback group corresponding to the current command sent by the FPGA acceleration device, wherein the command feedback group comprises: current command feedback and historical command feedback.
Before the host device determines each command to be sent to the FPGA acceleration device, the method further includes:
the host equipment sends the original data to be calculated to the FPGA acceleration equipment;
and after receiving the original data feedback sent by the FPGA acceleration equipment, the host equipment executes the step of determining each command to be sent to the FPGA acceleration equipment by the host equipment.
Wherein the generating a command group according to the current command and the historical command includes:
Setting the number of each command according to the sending sequence of each command; the earlier the command sending sequence is, the smaller the command number is;
determining a first number of a current command and a second number smaller than the first number;
Taking the command corresponding to the second number as a history command;
Generating a command group according to the current command and the historical command; the current command in the command set has a first number and the history command has a second number.
The data transmission method further comprises the following steps:
after receiving the command group, the FPGA acceleration equipment acquires the current command from the command group to respond and generates current command feedback;
taking command feedback corresponding to the second number as historical command feedback;
and generating a command feedback group according to the current command feedback and the historical command feedback, and sending the command feedback group to the host equipment.
Wherein the method further comprises:
and if the FPGA acceleration equipment detects that the target command packet is lost, the FPGA acceleration equipment searches the corresponding historical command from the command group and responds.
Wherein the method further comprises:
if the host device detects that the target command feedback packet is lost, the host device searches the corresponding historical command feedback from the command feedback group.
To achieve the above object, the present invention further provides a data transmission apparatus comprising:
the determining module is used for determining each command to be sent to the FPGA accelerating equipment through the host equipment;
The first generation module is used for generating a command group according to the current command and the historical command when the current command is sent;
The first sending module is used for sending the command group to the FPGA acceleration equipment;
The receiving module is used for receiving a command feedback group corresponding to the current command, which is sent by the FPGA acceleration equipment, wherein the command feedback group comprises: current command feedback and historical command feedback.
Wherein the apparatus further comprises:
the second sending module is used for sending the original data to be calculated to the FPGA acceleration equipment;
The determining module is specifically configured to: after receiving the feedback of the original data sent by the FPGA acceleration equipment, determining each command to be sent to the FPGA acceleration equipment.
To achieve the above object, the present invention further provides an electronic device including:
a memory for storing a computer program;
and the processor is used for realizing the steps of the data transmission method when executing the computer program.
To achieve the above object, the present invention further provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the above-described data transmission method.
As can be seen from the above solution, the data transmission method provided by the embodiment of the present invention includes: the host device determines each command to be sent to the FPGA acceleration device; when the host equipment sends a current command, generating a command group according to the current command and a historical command, and sending the command group to the FPGA acceleration equipment; the host equipment receives a command feedback group corresponding to a current command, which is sent by the FPGA acceleration equipment, wherein the command feedback group comprises: current command feedback and historical command feedback. Therefore, when the host device and the FPGA acceleration device send data to each other, not only the current data to be sent but also the historical data need to be sent, by the mode, the host device and the FPGA acceleration device can acquire related data from the historical commands and the historical command feedback in the command group and the command feedback group which are subsequently sent even if overtime and packet loss occur during data transmission, so that re-acquisition is avoided, and the data transmission efficiency is improved; the invention also discloses a data transmission device, equipment and a storage medium, and the technical effects can be realized.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a command transmission process in a prior art scheme;
Fig. 2 is a schematic flow chart of a data transmission method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a command transmission process according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a data transmission device according to an embodiment of the present invention;
Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
It should be noted that, under the framework of the FPGA cloud platform, the following procedures are provided by using OpenCL calling equipment at present:
1. The upper layer software prepares the original data to be calculated and calls the OpenCL standard interface.
2. After OpenCL receives the data, it passes the data to MMD layer (device management layer).
3. The MMD layer finds out the corresponding equipment, calls the data transmission interface registered by the equipment, and sends the data.
4. The upper layer software calls the OpenCL interface again to start the FPGA acceleration device to calculate.
5. The OpenCL delivers the commands to the MMD layer, which decomposes the commands and sends the commands in order.
6. And after the FPGA acceleration equipment completes calculation, sending a notification command to the host equipment.
7. After the host device obtains the completion notification of the FPGA acceleration device, the host device starts to read the result data on the FPGA acceleration device.
8. The above procedure is repeated to continuously complete the acceleration calculation processing of the data.
Referring to fig. 1, a schematic diagram of a command transmission process in the prior art is shown, wherein a data stream in the diagram is original data sent to an FPGA acceleration device by a host device, and after the FPGA acceleration device receives the original data, a data stream feedback is sent to inform the host device that the FPGA acceleration device has received the original data. And then, a command 1 is sent at the moment T1, a command 2 is sent at the moment T2, a command 3 is sent at the moment T3, after receiving the commands, the FPGA equipment sequentially executes the commands, and then, command feedback is sent sequentially after the commands are executed, and after the final calculation command is executed, the FPGA acceleration equipment sends a completion notification so that the host equipment can read the final calculation result from the FPGA acceleration equipment.
However, in the process of transmitting the command and the command feedback, if phenomena of overtime and packet loss occur, the data transmission efficiency will be affected, for example: after the host device finishes sending the command 1, the command 2 and the command 3, the host device waits for feedback of the FPGA acceleration device. If the feedback of the command 2 is lost due to the packet loss, the host device does not receive the feedback of the command 2, and the host device needs to trigger the command of overtime retransmission, resend the command 2, wait for the feedback of the command 2, and do not perform the next step until receiving the feedback of all the commands. It can be seen that this data transmission manner may result in a reduced efficiency of data transmission and command transmission by the host and FPGA.
Therefore, the embodiment of the invention discloses a data transmission method, a device, equipment and a storage medium, so that serious overtime and packet loss phenomena are avoided when host equipment and FPGA acceleration equipment transmit data, and the data transmission efficiency is improved.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 2, a flow chart of a data transmission method provided by an embodiment of the present invention includes:
s101, a host device determines each command to be sent to an FPGA acceleration device;
Referring to fig. 3, a schematic diagram of a command transmission process according to an embodiment of the present invention is provided; as can be seen from fig. 3, in this scheme, the host device needs to send the raw data to be calculated to the FPGA acceleration device, and after receiving the feedback of the raw data sent by the FPGA acceleration device, the host device executes the step of determining, by the host device, each command to be sent to the FPGA acceleration device. As shown in fig. 3, in the present embodiment, the present embodiment is described by taking three commands, namely, command 1, command 2 and command 3, as examples, and in practical application, the number of commands is not limited to 3.
S102, when the host equipment sends a current command, generating a command group according to the current command and a historical command, and sending the command group to the FPGA acceleration equipment;
In this embodiment, when the host device transmits the current command, it is first necessary to set the number of each command according to the transmission order of the respective commands; the earlier the order of transmission of the commands, the smaller the number of the commands; determining a first number of the current command and a second number smaller than the first number; taking the command corresponding to the second number as a history command; generating a command group according to the current command and the historical command; the current command in the command set has a first number and the history command has a second number. Such as: if there are three commands, the first transmitted command number is set to 1, the second transmitted command number is set to 2, and the third transmitted command number is set to 3, that is, the command obtained according to the transmission order is: command 1, command 2, command 3. If the current command to be sent is command 2, the command represents a first number 2, a second number 1 smaller than the first number, and command 2 corresponding to the number 2 is used as a history command, and a command group is generated according to the current command (command 2) and the history command (command 1).
That is, when the command is sent, the scheme firstly considers the packet loss condition, and sends the command 1 to the FPGA acceleration device at the moment of T1. At the time T2, integrating the command 1 and the command 2 to generate a command group, and sending the command group to FPGA acceleration equipment; and at the time T3, integrating the command 1, the command 2 and the command 3 to generate a command group, and sending the command group to the FPGA acceleration equipment. After the FPGA acceleration device detects that the target command loses the packet, the FPGA acceleration device can search the corresponding historical command from the command group and respond, for example: the FPGA acceleration device does not receive the command 1, and at the moment, the command 1 can be obtained from the command group corresponding to the command 2, and the command 1 can also be obtained from the command group corresponding to the command 3, so that the packet loss condition is reduced, and unless a third group of commands are lost, the retransmission mechanism is not triggered by the previous 2 groups of commands.
And if no packet is lost during network data transmission, the FPGA acceleration device needs to determine the command to be executed from the command group, for example: after receiving the command group of the command 1, since the command group only comprises the command 1, the command 1 can be directly executed at the moment; after receiving the command group corresponding to the command 2, since the command group includes the command 1 and the command 2, it needs to determine whether the command 1 is executed at this time, if the command 1 is executed, the command 1 does not need to be executed continuously at this time, the command 2 can be executed directly, and the command 1, the command 2 and the command 3 can be executed sequentially according to each command group sent by the host device.
S103, the host equipment receives a command feedback group corresponding to the current command, which is sent by the FPGA acceleration equipment, wherein the command feedback group comprises: current command feedback and historical command feedback.
In this embodiment, after receiving the command group, the FPGA acceleration device obtains the current command from the command group, responds to generate the current command feedback, and then uses the command feedback corresponding to the second number as the historical command feedback, generates the command feedback group according to the current command feedback and the historical command feedback, and sends the command feedback group to the host device. Such as: the FPGA acceleration device receiving the command group includes: a current command (command 2) and a history command (command 1), wherein the first number is 2, and the second number is 1; the FPGA acceleration equipment generates command 2 feedback after responding to the command 2, then takes command 1 feedback corresponding to the second number as historical command feedback, and generates a command feedback group from the command 2 feedback and the command 1 feedback.
Namely: the FPGA acceleration device in this solution also needs to integrate and send command feedback, for example: the command feedback group corresponding to the command 1 includes a command 1 feedback, the command feedback group corresponding to the command 2 includes a command 1 feedback and a command 2 feedback, and the command feedback group corresponding to the command 3 includes a command 1 feedback, a command 2 feedback, and a command 3 feedback. In this way, if the host device detects that the target command feedback packet is lost, the corresponding historical command feedback can be directly searched from the command feedback group. Such as: the host device does not receive the feedback of the command 1, and at this time, the feedback of the command 1 can be obtained from the command feedback group corresponding to the command 2, or the feedback of the command 1 can be obtained from the command feedback group corresponding to the command 3, so that the packet loss is reduced, and unless the third group of commands are lost, the retransmission mechanism is not triggered by the previous 2 groups of commands.
In summary, when the host device and the FPGA acceleration device in the present solution send data to each other, not only the data to be sent currently but also the history data need to be sent, by this way, the host device and the FPGA acceleration device can obtain relevant data from the history command and the history command feedback in the command group and the command feedback group that are subsequently sent, so as to avoid reacquiring and improve the data transmission efficiency even if the phenomena of timeout and packet loss occur when the host device and the FPGA acceleration device transmit data.
The transmission device, the medium and the transmission method described in the following may be referred to each other.
Referring to fig. 4, a schematic structural diagram of a data transmission device according to an embodiment of the present invention includes:
a determining module 11, configured to determine, by using a host device, each command to be sent to the FPGA acceleration device;
A first generating module 12, configured to generate a command group according to a current command and a history command when sending the current command;
a first sending module 13, configured to send the command set to the FPGA acceleration device;
The receiving module 14 is configured to receive a command feedback group corresponding to the current command sent by the FPGA acceleration apparatus, where the command feedback group includes: current command feedback and historical command feedback.
Wherein the apparatus further comprises:
the second sending module is used for sending the original data to be calculated to the FPGA acceleration equipment;
The determining module is specifically configured to: after receiving the feedback of the original data sent by the FPGA acceleration equipment, determining each command to be sent to the FPGA acceleration equipment.
Wherein the first generation module comprises:
A setting unit configured to set a number of each command according to a transmission order of the respective commands; the earlier the command sending sequence is, the smaller the command number is;
a first determining unit configured to determine a first number of a current command, and a second number smaller than the first number;
A second determining unit configured to take a command corresponding to the second number as a history command;
The generation unit is used for generating a command group according to the current command and the historical command; the current command in the command set has a first number and the history command has a second number.
Wherein the device comprises:
the first response module is used for acquiring the current command from the command group to respond after the FPGA acceleration equipment receives the command group, generating current command feedback, and taking the command feedback corresponding to the second number as historical command feedback;
The second generation module is used for generating a command feedback group according to the current command feedback and the historical command feedback;
And the third sending module is used for sending the command feedback group to the host equipment.
Wherein the apparatus further comprises:
and the second response module is used for searching the corresponding historical command from the command group and responding when the FPGA acceleration equipment detects that the target command packet is lost.
Wherein the apparatus further comprises:
And the third response module is used for searching the corresponding historical command feedback from the command feedback group when the host equipment detects that the target command feedback packet is lost.
Referring to fig. 5, a schematic structural diagram of an electronic device according to an embodiment of the present invention includes:
A memory 21 for storing a computer program;
and a processor 22, configured to implement the steps of the data transmission method according to the above-described method embodiment when executing the computer program.
In this embodiment, the device may be a PC (Personal Computer ), or may be a terminal device such as a smart phone, a tablet computer, a palm computer, a portable computer, or the like.
The device may include a memory 21, a processor 22, and a bus 23.
The memory 21 includes at least one type of readable storage medium including flash memory, a hard disk, a multimedia card, a card memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, etc. The memory 21 may in some embodiments be an internal storage unit of the device, such as a hard disk of the device. The memory 21 may also be an external storage device of the device, such as a plug-in hard disk provided on the device, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD), etc. in other embodiments. Further, the memory 21 may also include both an internal storage unit of the device and an external storage device. The memory 21 may be used not only for storing application software installed in the device and various types of data, such as program codes for performing a data transmission method, etc., but also for temporarily storing data that has been output or is to be output.
The processor 22 may in some embodiments be a central processing unit (Central Processing Unit, CPU), controller, microcontroller, microprocessor or other data processing chip for executing program code stored in the memory 21 or for processing data, such as program code for performing data transmission methods, etc.
The bus 23 may be a peripheral component interconnect standard (PERIPHERAL COMPONENT INTERCONNECT, PCI) bus, or an extended industry standard architecture (extended industry standard architecture, EISA) bus, or the like. The bus may be classified as an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in fig. 5, but not only one bus or one type of bus.
Further, the device may also include a network interface 24, and the network interface 24 may optionally include a wired interface and/or a wireless interface (e.g., WI-FI interface, bluetooth interface, etc.), typically used to establish a communication connection between the device and other electronic devices.
Optionally, the device may further comprise a user interface 25, the user interface 25 may comprise a Display (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 25 may further comprise a standard wired interface, a wireless interface. Alternatively, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch, or the like. The display may also be referred to as a display screen or display unit, as appropriate, for displaying information processed in the device and for displaying a visual user interface.
Fig. 5 shows only a device having components 21-25, it will be understood by those skilled in the art that the configuration shown in fig. 5 is not limiting of the device and may include fewer or more components than shown, or may combine certain components, or a different arrangement of components.
There is also provided, for an embodiment of the present invention, a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the data transmission method described in the above method embodiment.
Wherein the storage medium may include: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A data transmission method, comprising:
the host device determines each command to be sent to the FPGA acceleration device;
When the host equipment sends a current command, generating a command group according to the current command and a historical command, and sending the command group to the FPGA acceleration equipment;
the host device receives a command feedback group corresponding to the current command sent by the FPGA acceleration device, wherein the command feedback group comprises: current command feedback and historical command feedback;
wherein the generating a command group according to the current command and the historical command includes:
Setting the number of each command according to the sending sequence of each command; the earlier the command sending sequence is, the smaller the command number is;
determining a first number of a current command and a second number smaller than the first number;
Taking the command corresponding to the second number as a history command;
Generating a command group according to the current command and the historical command; the current command in the command set has a first number and the history command has a second number.
2. The data transmission method according to claim 1, wherein before the host device determines each command to be sent to the FPGA acceleration device, further comprising:
the host equipment sends the original data to be calculated to the FPGA acceleration equipment;
and after receiving the original data feedback sent by the FPGA acceleration equipment, the host equipment executes the step of determining each command to be sent to the FPGA acceleration equipment by the host equipment.
3. The data transmission method according to claim 2, characterized in that the data transmission method further comprises:
after receiving the command group, the FPGA acceleration equipment acquires the current command from the command group to respond and generates current command feedback;
taking command feedback corresponding to the second number as historical command feedback;
and generating a command feedback group according to the current command feedback and the historical command feedback, and sending the command feedback group to the host equipment.
4. A data transmission method according to any one of claims 1 to 3, further comprising:
and if the FPGA acceleration equipment detects that the target command packet is lost, the FPGA acceleration equipment searches the corresponding historical command from the command group and responds.
5. A data transmission method according to any one of claims 1 to 3, further comprising:
if the host device detects that the target command feedback packet is lost, the host device searches the corresponding historical command feedback from the command feedback group.
6. A data transmission apparatus, comprising:
the determining module is used for determining each command to be sent to the FPGA accelerating equipment through the host equipment;
The first generation module is used for generating a command group according to the current command and the historical command when the current command is sent;
The first sending module is used for sending the command group to the FPGA acceleration equipment;
the receiving module is used for receiving a command feedback group corresponding to the current command, which is sent by the FPGA acceleration equipment, wherein the command feedback group comprises: current command feedback and historical command feedback;
The first generating module is specifically configured to:
Setting the number of each command according to the sending sequence of each command; the earlier the command sending sequence is, the smaller the command number is;
determining a first number of a current command and a second number smaller than the first number;
Taking the command corresponding to the second number as a history command;
Generating a command group according to the current command and the historical command; the current command in the command set has a first number and the history command has a second number.
7. The data transmission apparatus according to claim 6, further comprising:
the second sending module is used for sending the original data to be calculated to the FPGA acceleration equipment;
The determining module is specifically configured to: after receiving the feedback of the original data sent by the FPGA acceleration equipment, determining each command to be sent to the FPGA acceleration equipment.
8. An electronic device, comprising:
a memory for storing a computer program;
processor for implementing the steps of the data transmission method according to any one of claims 1 to 5 when executing said computer program.
9. A computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the steps of the data transmission method according to any one of claims 1 to 5.
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| CN110119243A (en) * | 2019-05-17 | 2019-08-13 | 北京达佳互联信息技术有限公司 | Command processing method, device, terminal and storage medium |
| CN110285534A (en) * | 2019-06-17 | 2019-09-27 | 珠海格力电器股份有限公司 | Intelligent control method, device, storage medium and air conditioner |
| WO2021057408A1 (en) * | 2019-09-27 | 2021-04-01 | 华为技术有限公司 | Command execution method and apparatus, and device |
| CN110750312A (en) * | 2019-10-17 | 2020-02-04 | 中科寒武纪科技股份有限公司 | Hardware resource configuration method and device, cloud side equipment and storage medium |
| CN111510447A (en) * | 2020-04-10 | 2020-08-07 | 浙江无端科技股份有限公司 | Network transmission method and related device |
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