CN111008070B - A fast neutron reactor core channel parallel task division method and system - Google Patents

Abstract

The invention provides a method and a system for dividing parallel tasks of a full reactor core subchannel of a fast neutron reactor, wherein the method comprises the following steps: storing the sub-channels of the full reactor core of the fast neutron reactor to be divided according to a preset data structure; traversing all sub-channels in the current assembly based on a preset data structure, dividing the sub-channels in the current assembly into a preset number of solving domains, and completing parallel task division of the current assembly; and applying the parallel task division result of the current assembly to all assemblies in the full reactor core of the fast neutron reactor to complete the parallel task division of the full reactor core sub-channels of the fast neutron reactor. The method realizes parallel task division of the full reactor core of the fast reactor based on a specific data structure and a division algorithm, so that the thermal fluid sub-channel simulation software can solve the fast reactor problem in large-scale parallel, and has important significance for improving the simulation efficiency of the sub-channel of the full reactor core of the fast reactor.

Description

A fast neutron reactor core channel parallel task division method and system

technical field

The invention relates to the technical field of high-performance computing, in particular to a fast neutron reactor full-core channel parallel task division method and system.

Background technique

Based on the nuclear reactor's full core sub-channels, it is necessary to carry out the fluid simulation of the whole core core accurate to each sub-channel. With the development of high-performance computing technology and supercomputers, it is now possible to use high-performance computing technology to realize nuclear reactors. The thermal fluid of the whole core is accurate to the simulation calculation of each sub-channel.

Using traditional serial programs to simulate the sub-channels of the whole core of the fast reactor consumes a lot of time. An effective way to solve this problem is to use parallel technology to perform the sub-channels of the whole core of the fast reactor in a short time An important step in the thermal fluid simulation of the whole core of a fast reactor using parallel technology is to divide parallel tasks. Generally, the sub-channels of the whole core are divided into different solution domains according to the principle of spatial adjacency. The calculation tasks of different solution domains are divided into different calculation units. However, the current task division method is not suitable for the parallel task division of the whole core subchannels of fast neutron reactors.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method and system for parallel task division of the whole core channel of a fast neutron reactor, so as to solve the problem that the current task division method is not suitable for the parallel task division of the whole core channel of a fast neutron reactor The problem.

In order to solve the above technical problems, the present invention provides the following technical solutions:

A method for dividing parallel tasks of the whole core sub-channels of a fast neutron reactor, the method for dividing parallel tasks of the whole core sub-channels of the fast neutron reactor includes:

Store the fast neutron reactor full core sub-channels to be divided according to the preset data structure;

Based on the preset data structure, traverse all sub-channels in the current component, divide the sub-channels in the current component into a preset number of solution domains, and complete the parallel task division of the current component;

The parallel task division result of the current component is applied to all components in the whole core of the fast neutron reactor, so as to complete the parallel task division of the subchannels of the whole core of the fast neutron reactor.

Wherein, the member variables of the preset data structure include: the number of the current subchannel in the component, the layer number of the current subchannel in the component, the metastructure type of the current subchannel, and the solution domain into which the current subchannel is divided , and the numbers of the current subpass' adjacent subpasses within the component.

Wherein, the meta-structure types include upper-type sub-channels, lower-type sub-channels, corner channels and side channels;

The upper-type sub-channel includes three adjacent sub-channels, which are respectively located at the top, lower left corner and lower right corner thereof; the lower-type sub-channel includes three adjacent sub-channels, which are respectively located at the upper left corner, upper right corner and lower right corner thereof; The corner channel includes two adjacent subchannels; the side channel includes three adjacent subchannels.

Among them, the upper limit of the number of sub-channels in each solution domain is set to n, and the number of the current sub-channel being traversed in the component is i, denoted as sub-channel i; sub-channel i is divided into the solution domain D _j ;

Then traverse all the sub-channels in the current component, and divide the sub-channels in the current component into a preset number of solution domains, specifically:

Traverse the adjacent sub-channels of sub-channel i in turn according to the preset order. If the number of sub-channels in the solution domain D _j is less than n, divide the currently traversed sub-channels into the solution domain D _j ; if the solution domain D _j If the number of neutron channels is equal to n, divide the currently traversed sub-channels into the next solution domain;

If the number of sub-channels in the solution domain D _j is still less than n after all the adjacent sub-channels of sub-channel i are divided into the solution domain D _j , continue to traverse the first sub-channel i according to the preset order Each adjacent sub-channel corresponding to the adjacent sub-channel being traversed, and divide the currently traversed sub-channel into the solution domain D _j , and so on, until the number of sub-channels in the solution domain D _j is equal to n, and the traversal is completed After all sub-channels in a component complete the division of parallel tasks of a component.

Among them, the upper limit of the number of sub-channels in each solution domain is set to n, and the number of the current sub-channel being traversed in the component is i, denoted as sub-channel i; sub-channel i is divided into the solution domain D _j ;

Then traverse all the sub-channels in the current component, and divide the sub-channels in the current component into a preset number of solution domains, specifically:

Traversing the next subchannel on the same layer as subchannel i, that is, subchannel i+1, if subchannel i+n-1 is on the same layer as subchannel i, divide subchannel i to subchannel i+n-1 into In the solution domain D _j ;

If the subchannel i+n-1 is not in the same layer as the subchannel i, assuming that when the subchannel i+m is traversed, all the subchannels of the layer where the subchannel i is located have been traversed, where m<n-1; then find the subchannel i+ The sub-channels of the next layer adjacent to m continue to traverse in a clockwise direction until the number of sub-channels in the solution domain _Dj is n. After traversing all the sub-channels in a component, the parallel task of a component is completed. division.

Correspondingly, in order to solve the above technical problems, the present invention also provides the following technical solutions:

A fast neutron reactor full-core sub-channel parallel task division system, said fast neutron reactor full-core sub-channel parallel task division system includes:

The sub-channel storage module is used to store the sub-channels of the whole core of the fast neutron reactor to be divided according to the preset data structure;

A task division module, configured to traverse all sub-channels in the current component based on the preset data structure, divide the sub-channels in the current component into a preset number of solution domains, and complete the parallel task division of the current component; The parallel task division result of the current component is applied to all components in the whole core of the fast neutron reactor, so as to complete the parallel task division of the subchannels of the whole core of the fast neutron reactor.

Wherein, the member variables of the preset data structure adopted by the sub-channel storage module include: the serial number of the current sub-channel in the component, the layer number of the current sub-channel in the component, the metastructure type of the current sub-channel, the current sub-channel The number of the solution domain into which the channel is divided, and the number of the adjacent subchannels of the current subchannel within the component.

Wherein, the meta-structure types include upper-type sub-channels, lower-type sub-channels, corner channels and side channels;

The upper-type sub-channel includes three adjacent sub-channels, which are respectively located at the top, lower left corner and lower right corner thereof; the lower-type sub-channel includes three adjacent sub-channels, which are respectively located at the upper left corner, upper right corner and lower right corner thereof; The corner channel includes two adjacent subchannels; the side channel includes three adjacent subchannels.

Among them, the upper limit of the number of sub-channels in each solution domain is set to n, and the number of the current sub-channel being traversed in the component is i, denoted as sub-channel i; sub-channel i is divided into the solution domain D _j ;

The process of the task division module performing parallel task division on the current component is specifically:

Traverse the adjacent sub-channels of sub-channel i in turn according to the preset order. If the number of sub-channels in the solution domain D _j is less than n, divide the currently traversed sub-channels into the solution domain D _j ; if the solution domain D _j If the number of neutron channels is equal to n, divide the currently traversed sub-channels into the next solution domain;

If the number of sub-channels in the solution domain D _j is still less than n after all the adjacent sub-channels of sub-channel i are divided into the solution domain D _j , continue to traverse the first sub-channel i according to the preset order Each adjacent sub-channel corresponding to the adjacent sub-channel being traversed, and divide the currently traversed sub-channel into the solution domain D _j , and so on, until the number of sub-channels in the solution domain D _j is equal to n, and the traversal is completed After all sub-channels in a component complete the division of parallel tasks of a component.

Among them, the upper limit of the number of sub-channels in each solution domain is set to n, and the number of the current sub-channel being traversed in the component is i, denoted as sub-channel i; sub-channel i is divided into the solution domain D _j ;

The process of the task division module performing parallel task division on the current component is specifically:

Traversing the next subchannel on the same layer as subchannel i, that is, subchannel i+1, if subchannel i+n-1 is on the same layer as subchannel i, divide subchannel i to subchannel i+n-1 into In the solution domain D _j ;

If the subchannel i+n-1 is not in the same layer as the subchannel i, assuming that when the subchannel i+m is traversed, all the subchannels of the layer where the subchannel i is located have been traversed, where m<n-1; then find the subchannel i+ The sub-channels of the next layer adjacent to m continue to traverse in a clockwise direction until the number of sub-channels in the solution domain _Dj is n. After traversing all the sub-channels in a component, the parallel task of a component is completed. division.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

The fast neutron reactor core channel parallel task division method of the present invention is suitable for the core structure of the fast reactor, and can solve the problem that the distribution of the fast reactor core sub-channels is not a traditional matrix structure, and it is difficult to realize parallel tasks through the traditional array division method For the problem of division, the present invention realizes the division of parallel tasks of the full core of the fast reactor based on a specific data structure and a division algorithm, so that the thermal fluid subchannel simulation software can solve the fast reactor problem in parallel on a large scale. The core channel simulation efficiency is of great significance.

Description of drawings

Fig. 1 is the flow chart of the parallel task division method of the fast neutron reactor full core sub-channel of the present invention;

Figure 2 is a schematic cross-sectional view of a fast reactor core assembly;

Fig. 3 is the element structure diagram of the neutron channel of the fast reactor core assembly;

Fig. 4 is a schematic diagram of the division results using the breadth-first division algorithm;

FIG. 5 is a schematic diagram of a division result using a hierarchical division algorithm.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

first embodiment

Please refer to Fig. 1 to Fig. 5, the present embodiment provides a kind of fast neutron reactor whole reactor core channel parallel task division method, this method is shown in Fig. 1, comprises:

S101, storing the fast neutron reactor core sub-channels to be divided according to a preset data structure;

Among them, it should be noted that, unlike the cross-section of the PWR component, which is a rectangle, the distribution of the sub-channels is a matrix distribution, which can be stored in a two-dimensional array, and parallel tasks can be easily realized by dividing the two-dimensional array divided. The cross-section of the fast reactor core assembly is a regular hexagon, and the corresponding sub-channels are in the shape of a regular triangle, as shown in Figure 2. In the figure, the sub-channels 1-6 are the first layer of sub-channels, and the sub-channels 7-24 Channels are sub-channels of the second layer, and sub-channels No. 25-42 are sub-channels of the third layer; it can be seen that the distribution of sub-channels cannot be simply stored in a two-dimensional array.

In this regard, this embodiment uses the fast reactor core structure to design a data structure for storing sub-channels. Based on this, the parallel task division of the full-core fast reactor core for large-scale clusters/supercomputing can be completed.

Among them, the member variables of the above-mentioned preset data structure include: the number index of the current sub-channel in the component, the layer number layer of the current sub-channel in the component, the meta-structure type type of the current sub-channel, and the current sub-channel is divided into The number domain of the solution domain, and the number surd_chan[0-3] of the adjacent subchannels of the current subchannel in the component.

Among them, according to the different positions of the sub-channels in the component, it can be divided into sub-channels with four structures: "upper" type sub-channel, "downer" type sub-channel, corner channel, and side channel, as shown in Figure 3. Since there is no fluid exchange between sub-channels across components, the sub-channels across components are not considered to be divided into the same solution domain when dividing, and each sub-channel is adjacent to at most three sub-channels in the same component , use 0, 1, 2 to number the positions of adjacent sub-channels in the four metastructures.

Specifically, the "upper" type center channel is shown in (a) of Figure 3, including three adjacent sub-channels, which are located in the lower left corner (position 0), the lower right corner (position 1) and the upper (position 2) respectively. position); as shown in Figure 3 (b), the down-type sub-channel includes three adjacent sub-channels, which are respectively located in the upper left corner (position 0), the upper right corner (position 1) and the bottom (position 2) ; As shown in (c) in Fig. 3, the corner passage includes two adjacent sub-passages, and No. 2 and No. 3 positions in the figure (c) come from adjacent components; As shown in (d) in Fig. 3, the side passage includes Three adjacent sub-channels, position No. 3 in (d) comes from adjacent components.

Based on the above, type can be -1, 0, 1, 2 and 3, which respectively represent the initialization value, "up" type center channel, "down" type center channel, side channel and corner channel; the initialization value of domain is -1, surd_chan[0-3] records the internal numbers of the surrounding sub-channels of the current sub-channel, and its subscripts 0-3 correspond to the positions of sub-channels 0-3 in the sub-channel element structure diagram. If the value of surd_chan[xxx] is 0, It means that there is no sub-channel at this position or the corresponding sub-channel has not been found yet. If the value of surd_chan[xxx] is less than 0, it means that the sub-channel at this position is located in another component, and its absolute value indicates the global number of the sub-channel in the corresponding component.

S102. Based on the preset data structure, traverse all sub-channels in the current component, divide the sub-channels in the current component into a preset number of solution domains, and complete the parallel task division of the current component;

Wherein, it should be noted that when the method of this embodiment divides the whole core, the division is performed in units of components. If there are N components in the whole core, and each component is finally divided into n solution domains, the final total The core sub-channel is divided into N*n solution domains.

Two methods are provided for the parallel task division here. One is that the breadth-first traversal gives priority to the adjacent sub-channels in the three orientations of the current sub-channel; the other way is to traverse according to the layer where the sub-channel is located.

The two methods are explained as follows:

Breadth-first partitioning algorithm:

Assuming that the upper limit of the number of sub-channels in each solution domain is n, the number of the current sub-channel being traversed in the component is i, denoted as sub-channel i; sub-channel i is divided into the solution domain D _j ;

Then traverse all sub-channels in the current component, and divide the sub-channels in the current component into a preset number of solution domains, specifically:

Traverse the adjacent sub-channels of sub-channel i in turn according to the preset order. If the number of sub-channels in the solution domain D _j is less than n, divide the currently traversed sub-channels into the solution domain D _j ; if the solution domain D _j If the number of neutron channels is equal to n, divide the currently traversed sub-channels into the next solution domain;

If the number of sub-channels in the solution domain D _j is still less than n after all the adjacent sub-channels of sub-channel i are divided into the solution domain D _j , continue to traverse the first sub-channel i according to the preset order Each adjacent sub-channel corresponding to the adjacent sub-channel being traversed, and divide the currently traversed sub-channel into the solution domain D _j , and so on, until the number of sub-channels in the solution domain D _j is equal to n, and the traversal is completed After all sub-channels in a component complete the division of parallel tasks of a component.

Specifically, here, in this embodiment, after subchannel i is divided into solution domain D _j , if the number of subchannels in solution domain D _j is less than n, then the subchannel at position 0 of subchannel i is divided into into the solution domain D _j , and then continue to judge whether to divide the sub-channels of the No. 1 position and No. 2 position of the sub-channel i into the solution domain D _j . If the number of sub-channels in the solution domain D _j is still less than n after dividing the sub-channels at the three positions of sub-channel i into the solution domain D _j , then traverse the position 0 of the sub-channel i , divide the sub-channel into the solution domain D _j , and so on, until the number of sub-channels in the solution domain D _j is equal to n.

It is set to divide the 4 sub-channels into a solution domain, and the division result using the breadth-first partition algorithm is shown in Figure 4. The number of the sub-channel position in the figure indicates the solution domain to which the sub-channel belongs.

Hierarchy division algorithm:

Assuming that the upper limit of the number of sub-channels in each solution domain is n, the number of the current sub-channel being traversed in the component is i, denoted as sub-channel i; sub-channel i is divided into the solution domain D _j ;

Then traverse all sub-channels in the current component, and divide the sub-channels in the current component into a preset number of solution domains, specifically:

Traversing the next subchannel on the same layer as subchannel i, that is, subchannel i+1, if subchannel i+n-1 is on the same layer as subchannel i, divide subchannel i to subchannel i+n-1 into In the solution domain D _j ;

If the subchannel i+n-1 is not in the same layer as the subchannel i, assuming that when the subchannel i+m is traversed, all the subchannels of the layer where the subchannel i is located have been traversed, where m<n-1; then find the subchannel i+ The sub-channels of the next layer adjacent to m continue to traverse in a clockwise direction until the number of sub-channels in the solution domain _Dj is n. After traversing all the sub-channels in a component, the parallel task of a component is completed. division.

It is set to divide the four sub-channels into a solution domain, and the division result of the hierarchical partition algorithm is shown in Figure 5. The number of the sub-channel position in the figure indicates the solution domain to which the sub-channel belongs.

S103 , applying the parallel task division result of the current component to all components in the whole core of the fast neutron reactor, so as to complete the parallel task division of the sub-channels of the whole core of the fast neutron reactor.

Here, the principle is that the components in the core have the same structure, and the division result of the current component is applied to all the components of the core to obtain the result of sub-channel task division of the whole core of the fast reactor.

The fast neutron reactor core sub-channel parallel task division method in this embodiment is applicable to the core structure of the fast reactor, and can solve the problem that the distribution of the fast reactor core sub-channels is not a traditional matrix structure, and it is difficult to achieve parallelism through the traditional array division method The problem of task division; based on the specific data structure and division algorithm, the parallel task division of the fast reactor core is realized, so that the thermal fluid subchannel simulation software can solve the fast reactor problem in parallel on a large scale, which is very important for improving the fast reactor core Subchannel simulation efficiency has important implications.

second embodiment

This embodiment provides a fast neutron reactor core channel parallel task division system, the fast neutron reactor core channel parallel task division system includes:

The sub-channel storage module is used to store the sub-channels of the whole core of the fast neutron reactor to be divided according to the preset data structure;

The task division module is used to traverse all sub-channels in the current component based on the preset data structure, divide the sub-channels in the current component into a preset number of solution domains, and complete the parallel task division of the current component; The result of parallel task division of components is applied to all components in the whole core of the fast neutron reactor to complete the parallel task division of the whole core of the fast neutron reactor.

The fast neutron reactor core channel parallel task division system of this embodiment corresponds to the fast neutron reactor core channel parallel task division method of the first embodiment above; wherein, the fast neutron reactor of this embodiment The functions realized by each functional module in the parallel task division system for full-core sub-channels correspond to each process step in the method for dividing parallel tasks for full-core sub-channels of the fast neutron reactor in the first embodiment above. Therefore, in This will not be repeated here.

In addition, it should be noted that those skilled in the art should understand that the embodiments of the embodiments of the present invention may be provided as methods, devices, or computer program products. Accordingly, embodiments of the invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowcharts and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, embedded processor, or other programmable data processing terminal processor to produce a machine such that instructions executed by the computer or other programmable data processing terminal processor produce instructions for A device for realizing the functions specified in one or more procedures of a flowchart and/or one or more blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the The instruction means implements the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram. These computer program instructions can also be loaded into a computer or other programmable data processing terminal equipment, so that a series of operational steps are performed on the computer or other programmable terminal equipment to produce computer-implemented processing, thereby The instructions executed above provide steps for implementing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

It should also be noted that in this article, relational terms such as first and second etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations Any such actual relationship or order exists between.

The term "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or terminal equipment comprising a set of elements includes not only those elements but also other elements not expressly listed, or Yes also includes elements inherent in such a process, method, article or end-equipment. Without further limitations, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising said element.

Finally, it should be noted that the above are only preferred embodiments of the present invention, and it should be pointed out that although the preferred embodiments of the present invention have been described, for those of ordinary skill in the art, once they know the basic creative concepts of the present invention , under the premise of not departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention. Therefore, the appended claims are intended to be interpreted to cover the preferred embodiment and all changes and modifications which fall within the scope of the embodiments of the present invention.

Claims (4)

1. a fast neutron reactor full reactor core sub-channel parallel task division method is characterized in that, the fast neutron reactor full reactor core sub channel parallel task division method comprises: Store the fast neutron reactor full core sub-channels to be divided according to the preset data structure; Based on the preset data structure, traverse all sub-channels in the current component, divide the sub-channels in the current component into a preset number of solution domains, and complete the parallel task division of the current component; Applying the parallel task division result of the current component to all components in the fast neutron reactor full core to complete the fast neutron reactor full core subchannel parallel task division; The member variables of the preset data structure include: the number of the current subchannel in the component, the layer number of the current subchannel in the component, the metastructure type of the current subchannel, and the number of the solution domain to which the current subchannel is divided , and the number of the adjacent sub-channel of the current sub-channel in the component; The meta-structure types include upper-type sub-channels, lower-type sub-channels, corner channels and side channels; The upper-type sub-channel includes three adjacent sub-channels, which are respectively located at the top, lower left corner and lower right corner thereof; the lower-type sub-channel includes three adjacent sub-channels, which are respectively located at the upper left corner, upper right corner and lower right corner thereof; The corner channel includes two adjacent subchannels; the side channel includes three adjacent subchannels; Assuming that the upper limit of the number of sub-channels in each solution domain is n, the number of the current sub-channel being traversed in the component is i, denoted as sub-channel i; sub-channel i is divided into the solution domain D _j ; Then traverse all the sub-channels in the current component, and divide the sub-channels in the current component into a preset number of solution domains, specifically: Traverse the adjacent sub-channels of sub-channel i in turn according to the preset order. If the number of sub-channels in the solution domain D _j is less than n, divide the currently traversed sub-channels into the solution domain D _j ; if the solution domain D _j If the number of neutron channels is equal to n, divide the currently traversed sub-channels into the next solution domain; If the number of sub-channels in the solution domain D _j is still less than n after all the adjacent sub-channels of sub-channel i are divided into the solution domain D _j , continue to traverse the first sub-channel i according to the preset order Each adjacent sub-channel corresponding to the adjacent sub-channel being traversed, and divide the currently traversed sub-channel into the solution domain D _j , and so on, until the number of sub-channels in the solution domain D _j is equal to n, and the traversal is completed After all sub-channels in a component complete the division of parallel tasks of a component. 2. the fast neutron reactor full core subchannel parallel task division method as claimed in claim 1, is characterized in that, the upper limit value of the subchannel quantity in each solution domain is n, the current subchannel being traversed The number in the component is i, which is recorded as sub-channel i; sub-channel i is divided into the solution domain D _j ; Then traverse all the sub-channels in the current component, and divide the sub-channels in the current component into a preset number of solution domains, specifically: Traversing the next subchannel on the same layer as subchannel i, that is, subchannel i+1, if subchannel i+n-1 is on the same layer as subchannel i, divide subchannel i to subchannel i+n-1 into In the solution domain D _j ; If the subchannel i+n-1 is not in the same layer as the subchannel i, assuming that when the subchannel i+m is traversed, all the subchannels of the layer where the subchannel i is located have been traversed, where m<n-1; then find the subchannel i+ The sub-channels of the next layer adjacent to m continue to traverse in a clockwise direction until the number of sub-channels in the solution domain _Dj is n. After traversing all the sub-channels in a component, the parallel task of a component is completed. division. 3. A fast neutron reactor full core sub-channel parallel task division system is characterized in that the fast neutron reactor full core sub channel parallel task division system comprises: The sub-channel storage module is used to store the sub-channels of the whole core of the fast neutron reactor to be divided according to the preset data structure; A task division module, configured to traverse all sub-channels in the current component based on the preset data structure, divide the sub-channels in the current component into a preset number of solution domains, and complete the parallel task division of the current component; Applying the parallel task division result of the current component to all components in the fast neutron reactor full core to complete the fast neutron reactor full core subchannel parallel task division; The member variables of the preset data structure adopted by the sub-channel storage module include: the serial number of the current sub-channel in the component, the layer number of the current sub-channel in the component, the metastructure type of the current sub-channel, the current sub-channel being The number of the solution domain to be divided, and the number of the adjacent sub-channel of the current sub-channel in the component; The meta-structure types include upper-type sub-channels, lower-type sub-channels, corner channels and side channels; The upper-type sub-channel includes three adjacent sub-channels, which are respectively located at the top, lower left corner and lower right corner thereof; the lower-type sub-channel includes three adjacent sub-channels, which are respectively located at the upper left corner, upper right corner and lower right corner thereof; The corner channel includes two adjacent subchannels; the side channel includes three adjacent subchannels; Assuming that the upper limit of the number of sub-channels in each solution domain is n, the number of the current sub-channel being traversed in the component is i, denoted as sub-channel i; sub-channel i is divided into the solution domain D _j ; The process of the task division module performing parallel task division on the current component is specifically: Traverse the adjacent sub-channels of sub-channel i in turn according to the preset order. If the number of sub-channels in the solution domain D _j is less than n, divide the currently traversed sub-channels into the solution domain D _j ; if the solution domain D _j If the number of neutron channels is equal to n, divide the currently traversed sub-channels into the next solution domain; If the number of sub-channels in the solution domain D _j is still less than n after all the adjacent sub-channels of sub-channel i are divided into the solution domain D _j , continue to traverse the first sub-channel i according to the preset order Each adjacent sub-channel corresponding to the adjacent sub-channel being traversed, and divide the currently traversed sub-channel into the solution domain D _j , and so on, until the number of sub-channels in the solution domain D _j is equal to n, and the traversal is completed After all sub-channels in a component complete the division of parallel tasks of a component. 4. fast neutron reactor full reactor core subchannel parallel task division system as claimed in claim 3 is characterized in that, if the upper limit value of the subchannel quantity in each solution domain is n, the current subchannel being traversed The number in the component is i, which is recorded as sub-channel i; sub-channel i is divided into the solution domain D _j ; The process of the task division module performing parallel task division on the current component is specifically: Traversing the next subchannel on the same layer as subchannel i, that is, subchannel i+1, if subchannel i+n-1 is on the same layer as subchannel i, divide subchannel i to subchannel i+n-1 into In the solution domain D _j ; If the subchannel i+n-1 is not in the same layer as the subchannel i, assuming that when the subchannel i+m is traversed, all the subchannels of the layer where the subchannel i is located have been traversed, where m<n-1; then find the subchannel i+ The sub-channels of the next layer adjacent to m continue to traverse in a clockwise direction until the number of sub-channels in the solution domain _Dj is n. After traversing all the sub-channels in a component, the parallel task of a component is completed. division.

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