JPH0496168A - Remote execution system for program - Google Patents

Abstract

PURPOSE:To prevent turn-around time remarkably increased due to mis-selection by deciding an execution computer so as to guarantee the maximum execution efficiency when the resources of a data file, a program file, and a subroutine library, etc., are scattered. CONSTITUTION:The execution computer decision means 14 of a request origin computer 1 receives a response for the status inquiry of each resource, and checks the attribute of returned resource when all the responses are normal. Also, when unmovable resource exists in one computer, the computer is decided as the execution computer. When no movable resource exists, the size of the resource is added on each of the computers 2, 3, and the computer with the maximum tabulated size is decided as the execution computer. Thereby, it is possible to prevent the turn-around time increasing due to the mis-selection.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for remotely executing a program in a computer system connected via a network [Prior Art] Conventionally, in a method for remotely executing a program of this type,
The computer that executes the program at the time of a remote execution request is a computer designated by the user or a computer determined in advance based on configuration information or the like.

[Problem to be solved by the invention]

In the conventional remote program execution method described above, when performing remote execution, if the program to be executed and the resources it requires exist on the secondary storage of multiple computers, it becomes difficult to decide which computer will execute the program. This can result in a large amount of transferred data and a very long turnaround time, which is a particularly big problem when the communication medium is slow. Another problem is that when the amount of data to be transferred is equal, it is very difficult to determine which computer has the lowest load at the time of the request and can perform remote execution at high speed.

[Means to solve the problem]

In the remote program execution method of the present invention, a user requests a requesting computer for remote execution of a program, a program, and the resources necessary to execute the program, including program files, data files, printers, and input devices. In a computer system in which a plurality of resource holding computers are connected via a network, a request receiving means is provided on the requesting computer for accepting a request for remote execution of a program, and a means for accepting a request for remote execution of a program is placed on the requesting computer. There is a means for accepting requests, a resource search means for inquiring resource attributes and resource sizes from a group of resource holding computers, and a load status for inquiring the load situation including the CPU usage rate and memory usage rate at that time from the resource holding computers. a collection means; an execution computer determination means for determining on which computer the program should be executed based on the results of the resource search means and the load status collection means; and resources necessary for the determined execution computer when executing the program. and a remote execution request means for requesting remote execution of the program, and an execution reception means for accepting a remote execution instruction of the program from the requesting computer when the computer becomes an execution computer, and a remote execution request means for requesting remote execution of the program. Requests other resource-holding computers to transfer programs and required resource lists described in execution instructions that do not exist on the local computer, releases resources that are no longer needed when the program ends, and changes The computer includes remote resource management means for returning the resources that have been collected to the resource holding computer, and program execution means for starting the requested program after the resource collection is completed, and includes the program from the requesting computer on the resource holding computer. A resource information survey means that receives an inquiry about a resource and answers the attribute and size of the resource, and receives an inquiry about the load status,
A load status investigation means that notifies the load status such as the CPU usage rate and memory usage rate of the computer, and a load status investigation means that receives requests for transferring resources including programs and resource return instructions from the execution computer and transfers the resources to the execution computer. and resource transfer means for transferring resources.

〔Example〕

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

FIG. 1 is a block diagram of an embodiment of the present invention.

In the embodiment of FIG. 1, the requesting computer 1 and the resource holding computers 2 and 3 are connected to a local area network
The resource holding computer 2, which serves as the execution computer, is connected to the resource 8 and the required resource-time storage area 6.
The resource holding computer 3 is connected to a program storage file 5 and resources 7 such as data files required when executing the program. Also,
The request source computer 1 has a request reception means 11, a resource search means 12, a load situation collection means 13, an execution computer determination means 14, and a remote execution request means 15, and the resource holding computer 2 has an execution reception means 21 and a remote resource. Management means 22. Program execution means 23 and resource status investigation means 2
4, a resource transfer means 25, and a load situation investigation means 26, and the resource holding computer 3 has a resource situation investigation means 31, a resource transfer means 32, and a load situation investigation means 33.

Note that the resource holding computer 3 and the requesting computer 1 include an execution reception means, a remote resource management means, a program execution means, a resource transfer means, a resource status investigation means, a load status investigation means, and a required resource-time storage area. , some parts are omitted for convenience.

First, the user receives a request from the requesting computer 1 by specifying the name of the program, its location, and a list of the names and locations of the necessary resources to the means 11, and instructs the remote execution of the program.

The request accepting means 11 passes a list of programs and resources specified by the user to the resource searching means 12 along with their locations.

Further, the request receiving means 11 is the load status collecting means 13.
request to collect the load status of a group of computers connected on the network.

The resource searching means 12 inquires of the resource status investigating means on the computer where the resource is located from the passed list of programs and resources about the attribute, status, and size of each resource. In this embodiment, the resource status investigating means 24 of the resource holding computer 2 is inquired about the resource status and size by specifying the name of the required resource 8, and the resource status investigating means 31 of the resource holding computer 3 is inquired about the resource status and size. In response, the user specifies the name of the program to be used, the name of the execution program, and the name of the required resource 7, and inquires about its attributes, status, and size of the program and data.

The resource status investigating means 24 and 31 of the resource holding computers 2 and 3 investigate whether a program or resource with the specified name exists, and determine whether the specified user name has access rights to the program or resource. Investigate whether Furthermore, check the status of the resource and confirm that it is not in use.

If there is a problem in these investigations, a rejection response is returned to the execution computer determination means 14. If there is no problem with the state of the program or resource, the attribute and size of the resource are added to a normal response and returned to the executing computer determining means 14 of the requesting computer 1.

The load status collecting means 13 of the request source computer collects the load status of computers connected on the network according to instructions from the request receiving means 11. In this embodiment, the load status investigating means 16 and 33 of the resource holding computers 2 and 3 are requested to investigate the addition status by broadcast. Furthermore, the load status on the request source computer 1 is also investigated. The load status investigating means 26 and 33 of the resource holding computers 2 and 3 respectively check the CPU performance of their own computers and the current CPU performance.
The PU usage rate and free space of the main memory are investigated, and the load status collection means 13 of the requesting computer 1 is notified of the results. The load status collection means 13 of the request source computer 1 is
When the collection of the load status is completed, the executing computer determining means 14 is notified to that effect.

Executing computer determination means 14 of request source computer 1
receives responses to inquiries about the status of each resource, and if a rejection response is returned, it reports this to the user and cancels remote execution. If all responses are normal, check the attributes of the returned resources to see if there are any resources that cannot be moved. If non-movable resources are distributed across two computers, the user will be notified and remote execution will be stopped. If the immovable resource exists in one computer, that computer is determined to be the execution computer. If there are no immovable resources, the sizes of the resources are added up for each location (computer), and the computer with the largest total size is determined to be the execution computer. However, if there is no superiority beyond a certain difference, the load status of each computer is checked and the computer with the least load status is determined as the execution computer.

The case where the resource holding computer 2 is determined to be the execution computer will be described below.

When the execution computer determination means 14 determines that the resource holding computer 2 should execute, it notifies the remote execution request means 15 of the determination. The remote execution request means 15 accepts the execution of the execution computer notified from the execution computer determination means 14 by sending the name of the program specified by the user, the user's authentication data, and the name of the necessary resource to the means 21. Specify a list of locations, instruct the program to run, and wait for the response.

When the execution acceptance means 21 of the resource holding computer 2 receives a program execution request from the remote execution request means 13, it investigates the name of the resource containing the specified program and the location of the resource. If the location of the resource is that of the resource holding computer 2 itself, the status of that resource is checked. If the location of the resource is specified as not existing in the resource holding computer 2, the remote resource management means 22 is requested to collect the resource by specifying the user name, resource name, and location. When the remote resource management means 22 receives a remote resource collection request from the execution reception means 21, it specifies the user name and resource name to the resource holding computer 3 designated as the location of the resource in order to collect the resource. request resource transfer.

When the resource transfer means 32 of the resource holding computer 3 receives a resource transfer request from the remote resource management means 22 of the execution computer 2, it checks the status of the resource and the access rights for the user. If there is no problem with the access rights and status of the resource, the resource is set to the in-use status and resource transfer is started. If the resource is already in use, the transfer request is from a user who does not have access rights, or the resource cannot be moved, the transfer request will be rejected. Execution holding computer 2
The remote resource management means 22 converts the resources transferred from the resource transfer means 32 of the resource holding computer 3 into necessary resources.
It is stored in the time storage area 6. Further, if the resource transfer ends normally or is rejected, the execution reception notifies the means 21 whether it ends normally or not.

The execution acceptance means 21 requests the remote resource management means 22 to collect resources until all the resources have been successfully collected. In this process, if resource collection fails, the resource collection is given up at that point, the remote resource management means 22 is instructed to release the already collected resources, and the remote execution request means 15 of the requesting computer 1 is remotely Notify execution failure. When all the resources are successfully collected, the Browram execution means 23 is instructed to execute the program. The program execution means 23 loads the specified program from the necessary resource-time storage area 6 that stores the collected resources, and stores the necessary resources that originally exist in the necessary resource-time storage area 6 and the resource holding computer 2. The program is executed by allocating resources to the resources to be used.

When the execution of the program is completed, the program execution means 23 notifies the execution acceptance means 21 of the end of execution. When the execution acceptance means 21 receives the end of the program execution, it instructs the remote resource management means 22 to release resources and also notifies the remote execution requesting means 15 of the requesting computer 1 of the end of the remote execution. Upon receiving the resource release instruction, the remote resource management means 22 releases the resources that have not been updated among the resources existing in the required resource-time storage area 6, and also releases the resources that have not been updated.
2 of the completion of resource use, and the updated resources are returned to the resource transfer means 32.

When the resource transfer means 32 of the resource holding computer 3 receives the resource usage completion notification, it releases the resource from the in-use state. The resource transfer means 32 stores the resource returned in response to the resource return instruction in its original storage location, and releases the resource from the in-use state when the resource transfer is completed.

In the above embodiment, the resource holding computer 2 is the execution computer, but the resource holding computer 3 or the requesting computer 1 can also function as the execution computer without any problem.

[Effects of the Invention] As explained in detail above, the remote program execution method can achieve maximum execution when resources such as data files, program files, subroutine libraries, etc. required for program execution are distributed. Since the execution computer can be determined in such a way as to guarantee efficiency, the program can be executed without the risk of an enormous turnaround time due to a mistake in selecting the execution computer, unlike in conventional remote execution. There is an effect that can be done. In particular, when a necessary resource cannot be moved on the network, the computer where the resource is located is determined and the program is automatically executed on that computer. Since the program is executed on a computer with a low load, the user can request remote execution without being aware of the attributes of the resource or the computer on which the program should be executed.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention. 1... Request source computer, 2, 3... Resource holding computer, 4... Local area network, 5
...Program storage file, 6.Required resources-time storage area, 7, 8..Resources, 11..Request reception means, 12.Resource search means, 13.Load status collection. Means, 14... Execution computer determination means, 15.
...Remote execution request means, 21... Execution reception means, 2
2... Remote resource management means, 23... Program execution means, 24.31... Resource status investigation means, 25.32
...Resource transfer means, 26.33...Load situation investigation means.

Claims (1)

[Claims] A requesting computer from which a user requests remote execution of a program, the program, and the program files, data files, and files necessary to execute the program.
In a computer system in which a plurality of resource holding computers having resources including a printer and an input device are connected via a network, a request receiving means for accepting a request for remote execution of a program is provided on the requesting computer, and a request receiving means is provided on the requesting computer. , a request receiving means for accepting requests for remote execution of a program, a resource searching means for inquiring resource attributes and resource sizes from a group of resource holding computers, and a request receiving means for receiving requests for remote execution of programs;
load status collection means for inquiring about load status including PU usage rate and memory usage rate; execution computer determination means for determining on which computer the execution should be executed based on the results of the resource search means and the load status collection means; remote execution requesting means for requesting the determined execution computer to remotely execute the program together with a list of resources required when executing the program, and on each computer,
Execution accepting means accepts a remote program execution instruction from a requesting computer when the computer becomes an execution computer; Requests the resource holding computer to transfer, releases resources that are no longer needed when the program ends,
It has a remote resource management means for returning changed resources to the resource holding computer, and a program execution means for starting the requested program after resource collection is completed, and the program from the requesting computer is executed on the resource holding computer. A resource information investigation means that receives an inquiry about the included resources and answers the attributes and size of the resource, and receives an inquiry about the load status and reports the load status such as the CPU usage rate and memory usage rate of the computer. and a resource transfer means that receives a request to transfer a resource including a program and an instruction to return the resource from an execution computer and transfers the resource to and from the execution computer. Remote execution method.