JPH04177457A - Multi-resouce system scheduling system - Google Patents

Abstract

PURPOSE:To shorten the processing time for a scheduling job by allocating the processing tasks to plural resources on the average at an early stage of the scheduling job, selecting two resources that perform the exchange of processing tasks, and selecting the exchange of processing tasks so as to minimize the difference of evaluation value between both resources. CONSTITUTION:An average allocation means 1 performs the initialization processing. A processing task exchange resource selection means 2 evaluates each resource to which a processing task is allocated and selects the resources of the maximum and minimum evaluation values respectively. A processing task exchange evaluation means 3 extracts one by one the processing tasks allocated to the two selected resources and obtains the evaluation values of both resources after exchange of the extracted processing tasks. A processing task exchange means 4 obtains selects the exchange where the difference of evaluation values between both sources is minimized after exchange of the processing tasks out of the exchanges tried by the means 3 end then carries out the selected exchange. A resource selection/evaluation means 5 evaluates the validity of selection and outputs the optimum scheduling result.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a multi-resource system scheduling method in an information processing system, and particularly to a processing task (its We use a multi-resource system scheduling method that automatically performs scheduling to allocate resources to individual processing units that make up the overall processing in a processing system (not tasks that refer to processes in the field of electronic computers).

For example, in a processing system called a ``factory'' that performs the process of ``manufacturing multiple products,'' all the processing tasks of ``manufacturing individual products,'' which have a load of ``time required for manufacturing'', are placed on a resource called a ``manufacturing line.'' This is a method that automatically performs scheduling when allocating product manufacturing time to be as short as possible.

[Conventional technology]

Originally, scheduling in resource-rich systems was generally performed manually based on human intuition. However, manual labor requires a large amount of labor costs, and the know-how for scheduling becomes confidential information for the person in charge of scheduling.If the person in charge is replaced, the efficiency of the scheduling result (the processing of the processing system in which the scheduling was performed) The problem was that the efficiency of Therefore, a multi-resource system scheduling method has been adopted in which scheduling is automatically performed in a multi-resource system using an information processing system using a computer.

Conventionally, in this type of resource-rich system scheduling method, a method has been used in which all scheduling possibilities are tested and considered, and then the final scheduling is determined.

[Problem to be solved by the invention]

In the conventional resource-rich system scheduling method described above, the final scheduling is determined after all scheduling possibilities are tested and considered.
The number of resources is n (positive integer) and the number of processing tasks is m (positive integer).
If this is the case, the number of tests for scheduling will increase on the order of nanometers, and the scheduling processing time will be required to an extent that is practically impossible to schedule in a processing system that has a large number of processing tasks at a practical level. It has the disadvantage of becoming.

In view of the above points, an object of the present invention is to provide a multi-resource system scheduling method that can shorten the processing time required for scheduling.

[Means to solve the problem]

The multi-resource system scheduling method of the present invention is a multi-resource system scheduling method that automatically performs scheduling to allocate processing tasks to resources in a processing system that has multiple resources and performs processing. average allocation means for allocating on average to resources; processing task exchange resource selection means for selecting two resources for exchanging processing tasks;
A processing task exchange evaluation means for calculating the evaluation values of both resources after exchanging each one of the processing tasks assigned to both resources selected by the processing task exchange resource selection means, and the processing task exchange evaluation means. processing task exchange means that selects and actually performs the exchange of processing tasks that minimizes the difference between the evaluation values of the two resources selected by the processing task exchange resource selection means based on the obtained evaluation value; and resource selection evaluation means for evaluating whether or not the resource selection by the processing task exchange resource selection means performed after the processing by the processing task exchange means is effective.

[Effect]

In the multi-resource system scheduling method of the present invention, an average allocation means allocates processing tasks to a plurality of resources on an average basis at the beginning of scheduling, a processing task exchange resource selection means selects two resources for exchanging processing tasks, determining evaluation values of both resources after the processing task exchange evaluation means exchanges one by one the processing tasks assigned to both resources selected by the processing task exchange resource selection means;
The processing task exchange means selects the processing task exchange that minimizes the difference between the evaluation values of both resources selected by the processing task exchange resource selection means based on the evaluation value obtained by the processing task exchange evaluation means, and actually carries out the exchange. The resource selection evaluation means evaluates whether or not the resource selection by the processing task exchange resource selection means performed after the processing by the processing task exchange means is effective.

〔Example〕 Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the multi-resource system scheduling method of the present invention. The multi-resource system scheduling method of this embodiment includes an average allocation means 1, a processing task exchange resource selection means 2, a processing task exchange evaluation means 3, a processing task exchange means 4, and a resource selection evaluation means 5. It is configured.

FIG. 2 is a flowchart showing the processing of the multi-resource system scheduling method of this embodiment. This process includes an initialization process step 21, an average allocation step 22, a resource selection step 23, an exchange evaluation value summer step 24, an all exchange evaluation completion determination step 25, and an exchange step 2.
6, evaluation value improvement determination step 27, re-exchange step 28, resource selection step 29, and selection evaluation step 3
0 and a termination processing step 31.

Next, the operation of the multi-resource system scheduling method of this embodiment configured as described above will be explained.

The average allocation means 1 performs initialization processing to prepare for scheduling by inputting information regarding resources to be scheduled and processing tasks (step 21).

Furthermore, as a pre-work for a series of scheduling processes to be described later, the average allocation means 1 assigns all processing tasks to each resource on average (so that the number of processing tasks allocated to each resource is as same as possible). Assign (step 22).

Processing task exchange resource selection means 2 average allocation means 1
Each resource to which a processing task has been assigned is evaluated, and the resource with the maximum evaluation value and the resource with the minimum evaluation value are selected as "two resources for exchanging processing tasks" (step 23).

Here, the "evaluation value of a resource" refers to the load of the processing task assigned to that resource (the amount of processing required to perform the processing task. For example, when "manufacturing individual products" is the processing task, ).

The processing task exchange evaluation means 3 extracts the processing tasks assigned to the two resources to be exchanged selected by the processing task exchange resource selection means 2, one by one for both resources, and exchanges the two extracted processing tasks. Then, the evaluation values of both resources are determined (step 24).

Further, the processing task exchange evaluation means 3 determines whether or not the evaluation of step 24 has been performed for all exchanges (step 25), and if the evaluation of all exchanges has not been completed yet, the processing task exchange evaluation means 3 extracts the information from both resources. The evaluation in step 24 is repeated by changing the combination of processing tasks, and if the evaluation of all exchanges has been completed, control is passed to the processing task exchange means 4. In this way, step 23 or step 29 (described later) The exchange-based evaluation for all processing tasks assigned in step 22 or step 26 (see below) to the two resources selected in step 22 or step 26 (see below) is performed iteratively.

The processing task exchange means 4 selects the exchange that minimizes the difference between the evaluation values of both resources after the processing task exchange among the exchanges tried and evaluated by the processing task exchange evaluation means 3, and actually performs the exchange. (Step 26).

Further, the processing task exchange means 4 determines whether or not the difference between the evaluation values of both resources has become smaller than before the exchange due to the exchange executed in step 26 (step 27).

If the result of this judgment is smaller, the processing task exchange means 4 returns control to the process of step 24 by the processing task exchange evaluation means 3 in order to search for a more optimal exchange of processing tasks regarding the same two resources.

If it is determined in step 27 that it has not become smaller, the processing task exchange means 4 returns to the state before the exchange in order to invalidate the exchange executed in step 26 (step 28);
Control is passed to the processing task exchange resource selection means 2.

The processing task exchange resource selection means 2 evaluates each resource at that time, and selects the resource with the maximum evaluation value and the resource with the minimum evaluation value.
In step 29), control is passed to the resource selection evaluation means 5.

The resource selection evaluation means 5 determines whether or not the two resources selected in step 29 are the same as the two resources previously selected in step 23 or step 29.
Evaluate the effectiveness of the selection in (step 30).

If the judgment in step 30 is that they are different (if the selection in step 29 is valid), the resource selection is performed in order to find the optimal exchange of processing tasks for the new two resources selected in step 29. The evaluation means 5 returns control to the processing of step 24 by the processing task exchange evaluation means 3.

If the determination in step 30 is that the two are the same (the selection in step 29 is not valid), the resource selection evaluation means 5 outputs the state of allocation of each processing task to each resource at that time as an optimal scheduling result. A termination process is performed (step 31).

〔Effect of the invention〕

As explained above, in a processing system that has a plurality of resources and performs a certain process, the present invention starts scheduling from a state in which processing tasks are assigned to each resource on an average basis, and processes based on evaluation values By selecting two resources to exchange tasks and attempting optimization using only those resources, the processing time required for scheduling to obtain a scheduling result with a certain level of efficiency can be reduced. There is.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a flow chart showing the processing of the multi-resource system scheduling method shown in FIG. In the figure, ■... average allocation means, 2... processing task exchange resource selection means, 3... processing task exchange evaluation means, 4... processing task exchange means, 5... resource selection evaluation means. be.

Claims (1)

[Claims] In a multi-resource system scheduling method that automatically performs scheduling to allocate processing tasks to resources in a processing system that has a plurality of resources and performs processing, at the beginning of scheduling, the processing tasks are allocated to the plurality of resources on average. a processing task exchange resource selection means for selecting two resources for exchanging processing tasks; and one of the processing tasks allocated to both resources selected by the processing task exchange resource selection means. processing task exchange evaluation means for calculating the evaluation values of both resources after exchanging each resource; and evaluation values of both resources selected by the processing task exchange resource selection means based on the evaluation values obtained by the processing task exchange evaluation means. A processing task exchange means that selects and actually exchanges the processing tasks that minimize the difference between the processing tasks, and a resource selection means that is performed after the processing by the processing task exchange means and the resource selection means is effective. 1. A multi-resource system scheduling method, comprising: resource selection evaluation means for evaluating whether or not.