JPH03206545A - Computer system - Google Patents

Abstract

PURPOSE:To reduce the erroneous selection of an execution computer by deciding this execution computer based on the information on the resources given from a group of resources holding computers after the remote execution of a program is accepted by a requester computer and requesting the execution computer to perform the remote execution of the program. CONSTITUTION:A requester computer 1 is provided together with the resources holding computers 2 and 3, and a local area network 4 which secures the connection between the computer 1 and the computers 2 and 3 respectively. The computer 1 accepts a remote execution request of a program via a request acceptance means 11 and inquires the information on the resources of the groups 2 and 3. Thus the computer 1 decides a working computer based on the acquired information and asks the decided computer to perform the remote execution of the program. Thus it is possible to reduce the erroneous selection of the execution computer and to prevent the increase of the turn-around time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a computer system that is connected via a network and remotely executes a program.

[Conventional technology] Conventionally, in computer systems that remotely execute programs, programs are executed on a computer designated by the user or on a computer determined in advance based on configuration information, etc. upon request for remote execution. .

[Problems to be Solved by the Invention] However, in the conventional computer system described above, when performing remote execution, if the program to be executed and the resources it requires exist in the secondary storage of multiple computers, the program cannot be executed. Depending on which computer is used to execute the program, the amount of data to be transferred may be large, resulting in a very long turnaround time. This type of problem occurs particularly when the communication medium is slow. Furthermore, in the conventional computer systems mentioned above, the user has to decide which computer is most efficient for execution, and when resources are spread across multiple computers, the user has to judge which computer is most efficient. It was difficult to determine whether it would be better to run it on a computer.

Additionally, if a program requires resources that cannot be moved within a network, such as an input device or an output device, the user must specify the computer where the resource is located and execute it remotely. If there is a resource that cannot be moved within the network, it is obvious to the user that a program must be executed there, so this means that the user is forced to perform unnecessary instructions, and the user is unable to perform operations. There were problems such as causing discomfort when execution failed due to a mistake.The present invention improves these conventional drawbacks, and its purpose is to reduce the turnaround time due to a mistake in the selection of the execution computer. It is an object of the present invention to provide a computer system that prevents the computer from becoming extremely large and allows the user to perform remote execution without being aware of the attributes of resources or the computer on which the execution is to be performed.

[Means for Solving the Problems] 31 The computer system of the present invention includes a request source computer from which a user requests remote execution of a program, and a resource holding computer group that holds resources, a request receiving means for accepting a request for remote execution of a program; an executing computer determining means for inquiring resource-related information from a group of resource holding computers and determining an executing computer based on the obtained information; The present invention is characterized in that a remote execution requesting means for requesting remote execution is provided.

[Operation] In the present invention, when the requesting computer receives a request for remote execution of a program by the request receiving means, the requesting computer inquires of the resource holding computer group for information regarding the resource, and determines the executing computer based on the obtained information,
Request the determined execution computer to remotely execute the program.

[Example] Embodiments of the present invention will be described below with reference to the drawings. Explain in detail.

FIG. 1 is a block diagram of an embodiment of a computer system according to the present invention.

Referring to FIG. 1, the computer system of this embodiment includes a requesting computer 1, a resource holding computer 2,
, 3, and a local area network 4 that connects the request source computer 1 and the resource holding computers 2 and 3. The resource holding computer 2 is connected to an immovable resource 8 and a necessary resource temporary storage area 6. The resource holding computer 3 also includes a program storage file 5 and resources 7 such as data files that are required when executing the program. In this embodiment, if a non-movable resource exists in one computer, that computer is determined to be the execution computer. Therefore, in the example of FIG. 1, the resource holding computer 2 is Determined as the execution computer.

The requesting computer 1 is further provided with a request accepting means 11, an execution computer determining means 12, and a remote execution requesting means 3, and the resource holding computer 2 as an execution computer is further provided with an execution accepting means. 21, remote resource management means 22, program execution means 23, resource status investigation means 24, and resource transfer means 25
and is provided. Further, the resource holding computer 3 is further provided with a resource status investigation means 31 and a resource transfer means 32.

Note that the resource holding computer 3 and the requesting computer 1
Although there are execution acceptance means, remote resource management means, program execution means, resource transfer means, and resource status investigation means similar to those provided in the resource holding computer 2, they are omitted for the sake of simplicity.

Next, the operation of the computer system in such a configuration will be explained. First, a user uses the requesting computer 1 to specify the name and location of the program and a list of the names and locations of necessary resources, and instructs the request receiving means 11 to remotely execute the program. In response to this instruction, the request receiving means 1 passes a list of programs and resources specified by the user along with their locations to the executing computer determining means 2. Executing computer determining means l
Step 2 inquires of the resource status investigation means on the computer where the resource is located from the list of programs and resources passed to it, regarding the attributes, 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 status and size of the resource by specifying the name of the necessary resource 8, and the resource status investigating means 31 of the resource holding computer 3 is inquired about the resource status and size. Specify the user name, the name of the executable program, and the name of the required resource 7 to inquire about its attributes, status, and size of the program and data. Resource status investigation means 24.31 of resource holding computers 2 and 3
checks whether a program or resource with the specified name exists, and checks whether the specified user name has access rights to the program or resource. Furthermore, check the status of the resource and confirm that it is not in use. If a problem is found in these investigations, a rejection response is returned to the executing computer determining means 12. If there is no problem with the state of the program or resource, the attribute and size of the resource are added to the normal response and returned to the executing computer determining means 12 of the requesting computer 1.

The execution and computer determination means 2 of the request source computer 1 receives responses to the status inquiries of each resource, and if a rejection response is returned, it reports this to the user and does not perform remote execution. If all responses are normal, examine the attributes of the returned resources to see if there are any resources that cannot be moved.

If non-movable resources exist distributed between two computers, the user will be notified of this fact and remote execution will not be performed.

In this embodiment, as described above, immovable resources are
If it exists on 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.

In the following, a case where the immovable resource 8 exists only in the resource holding computer 2 will be explained.

When the executing computer determining means 2 determines that the resource holding computer 2 should execute, it notifies the remote execution requesting means 13 of the decision. As a result, remote execution requesting means 1
3 sends the name of the program specified by the user, the user's authentication data, and the name and location of the necessary resources to the execution acceptance means 21 of the execution computer notified from the execution computer determination means 2. Instruct the program to run by specifying the list and , and wait for the response. When the execution accepting means 21 of the resource holding computer 2 receives a program execution request from the remote execution requesting means 13,
Find out the name and location of the resource containing the specified program. 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 receiving 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 the transfer of resources.

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. The remote resource management means 22 of the execution computer 2 stores the resources transferred from the resource transfer means 32 of the resource holding computer 3 in the necessary resource temporary storage area 6. When the resource transfer ends normally or is rejected, the execution accepting means 21 is notified of whether it has ended normally or abnormally.

The execution acceptance unit 2l requests the remote resource management unit 22 to collect resources until all resources have been successfully collected. In this process, if the collection of resources fails, the resource collection is not performed at that point, and the remote resource management means 22 is instructed to release the already collected resources, and the request computer and the remote execution requesting means 13 of the failure of remote execution. If all resources are successfully collected, the program execution means 23
instructs the program to run. In response to this instruction, the program execution means 23 loads the specified program from the collected resource temporary storage area 6 and stores the necessary resources in the resource temporary storage area 6 and the resources originally existing on the resource holding computer 2. 8 and execute the program. The program execution means 23 notifies the execution acceptance means 21 of the end of execution when the execution of the program is completed. When the execution receiving means 21 receives the end of the program execution, it instructs the remote resource management means 22 to release the resources and also notifies the remote execution requesting means 13 of the requesting computer 11-1 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 in the resource temporary storage area 6, and also sends the resource transfer means 32 on the resource holding computer to use the resources. Notify completion,
The updated resources are returned to the resource transfer means 32.

Upon receiving the resource use completion notification, the resource transfer means 32 of the resource holding computer 3 releases the resource from the in-use state,
In addition, the resource returned in response to the resource return instruction is stored in the original storage location, and when the resource transfer is completed, the in-use state of the resource is released.

As described above, in this embodiment, the execution computer is determined to ensure maximum transfer efficiency when resources such as data files, program files, subroutine libraries, etc. required when executing a program are distributed. Therefore, it is possible to prevent a situation where the turnaround time becomes enormous due to an error in selecting the execution computer, which occurs in conventional remote execution.

In addition, if a necessary resource cannot be moved over the network, the computer where it is located is determined and the program is automatically executed on that computer, so the user does not have to be aware of the attributes of the resource or the computer on which it should be executed. You can request remote execution.

In the above-described embodiment, the computer that has the non-movable resources 8 is the execution computer, but if there are no non-movable resources, the computer that has the most resources will depend on the size of the program and resources. The computer that holds the resources becomes the execution computer, and programs and resources are transferred to it. In addition, although the case where the requesting computer 1 and the resource holding computer 3 are different computers has been explained, the case where the requesting computer itself is the resource holding computer or when there are multiple resource holding computers in the network is also possible. The present invention can be applied and operates similarly in these cases without any problems.

[Effects of the Invention] As explained above, in the present invention, when remote execution of a program is accepted in a requesting computer, an execution computer is determined based on information regarding resources from a resource holding computer group, and the execution computer is Since I am requesting remote execution of the program,
It is possible to reduce errors in selecting the execution computer and prevent situations where turnaround time becomes extremely long, and it is also possible to perform remote execution without making the user aware of the attributes of the resource or the computer on which it should be executed. There is an effect that it can be done.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of a computer system according to the present invention. In FIG. 1, 1...request source computer, 2, 3
...Resource holding computer, 4.Local area network, 5.Program storage file, 6.
...resource temporary storage area, 7...resource, 8...immovable resource, 11...request receiving means, 12...
- Executing computer determining means, 13... Remote execution requesting means, 21... Execution accepting means, 22... Remote resource management means, 23 - Program execution means, 24, 31... Resource status investigating means, 25 , 32...Resource transfer means.

Claims (1)

[Claims] In a computer system that includes a requesting computer from which a user requests remote execution of a program and a resource holding computer group that holds resources, the requesting computer includes a request receiving means for receiving a request for remote execution of a program. and an execution computer determination means for inquiring resource-related information from the resource holding computer group and determining an execution computer based on the obtained information, and a remote execution request means for requesting the determined execution computer to remotely execute the program. A computer system characterized by: