JPS6077259A - Load dispersion system - Google Patents

Abstract

PURPOSE:To disperse the load of high speed processing by transmitting a necessary command from a heavy load personal computer to a light load one, obtaining and executing a program and data on the basis of the command and transferring the processed result to a requesting personal computer. CONSTITUTION:Plural personal computers are mutually connected each other through an exchange. A load balance requesting side requested from a shell starts a requested side of a designated remote personal computer. Then, the requesting side transfers a command string received from the shell to the requested side. The requested side requests the transfer of a command process and input data and transfers the transferred command name or the like to the shell to start the command process. The started command process executes processing by using an I/O file and an output file of work. The N copy of a function transfers the output file of the work to the designated output file by using a logical path 4 and one series processing is completed.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a system for transmitting commands necessary for executing a job of a heavily loaded computer from a heavily loaded computer to a lightly loaded computer in a computer network, This relates to a load distribution method in which a lightly loaded computer obtains programs and data from a computer within a network based on the command, executes them, and transfers the processing results to the requesting computer.

[Conventional technology and problems]

In a personal computer (abbreviation for personal computer),
Conventionally, when multiple jobs are executed in parallel, the following two methods have been adopted.

(b) Execute multiple jobs in parallel using O8's multi-process function.

(b) A personal computer is constructed with multiple processors, and multiple jobs are executed by each processor.

However, these methods have the following problems.

The method (a) has the disadvantage that the processing time is longer because multiple jobs are executed by one processor.

Method (b) can shorten the processing time when multiple jobs are executed, but it has the disadvantage that it is not economical because multiple processors are installed in the computer even when multiple jobs are not executed. have

[Purpose of the invention]

The present invention aims to eliminate the above-mentioned drawbacks, and focuses on the situation in which multiple computers will be used in offices in the future.These computers will be networked, and if a user wants to execute multiple jobs. The purpose of this invention is to provide a load distribution method that can economically reduce processing time by having a lightly loaded computer in the network execute a part of the job.

[Structure of the invention]

Therefore, in a network system in which multiple computers are interconnected via a network, the load balancing method of the present invention allows a computer to request another computer to perform some of the jobs that should be executed by itself. In this case, we will transfer the necessary commands to execute the job from the computer to the other pan computer, analyze the commands on the other computer, and input the program and input data to execute the job. It is characterized in that it is brought from a personal computer, processed, and the processing results are transferred to the personal computer.

[Embodiments of the invention]

FIG. 1 is a diagram showing an example of a system in which a plurality of personal computers are interconnected via a network. In Figure 1, 1-
1 to 1-4 are personal computers, 2 is an exchange, and 3 is a line. Each personal computer 1-1.1-2.1-3.1-4 is interconnected with other personal computers via a line 3 and an exchange 2.

If a plurality of personal computers are connected to each other via a network and resource sharing becomes possible, there will be a demand for shortening processing time by utilizing the processing power of lightly loaded or unused personal computers.

When processing multiple processes that require execution processing time on a local computer, the usage pattern is to transfer the processes (programs) and data to an unused or lightly loaded computer and receive the processing results after the processing is completed. Become. In this way, a network system that allows unused or lightly loaded computers to be used from a local computer is considered to be an effective form of coupling.

When requesting processing from a remote computer, the local computer must check the status of the remote computer and determine which computer is unused or has a light load. is classified as follows.

(A) DOWN I PC (Inter Process Corrmu)
nicator), the logical path cannot be established.

■　BUSY A logical path can be established but is in use.

(Q Idle Logical bus is established and not in use.

Note that IPC is a network communication program. (In the case of '), the IPCT of the local PC can be detected, but it is not possible to communicate with other pan controllers. The state of '■' can occur due to various causes such as power outage, failure, heavy load, etc. (B) The status of can be determined by collecting the following information on the local PC system after the logical bus is established by the IPC.

(1) Number of unused bytes in main memory (11
) Number of activated processes 0ri1 Empty space on floppy disk If these values are less than a predetermined value, it is determined to be Idle. (B) is (4), (C
This is a case other than J.

When a user uses the load balancing function, there are two methods as follows.

■ Remote control using Function N5TAT
Displays the status of the computer, searches for an idle computer, and requests processing.

■ Searching for a remote computer whose system is idle,
Make a processing request for processing.

Function N5TAT is a command input by the operator from the gear board. The selection of ■ and ■ depends on whether or not a remote pan controller is specified when requesting load balancing. Method (2) is used when requesting processing by specifying a personal computer because of reasons such as whether a specific peripheral device is connected or installed in a specific location. Method (2) is used when the processing can be requested to any computer as long as it is an idle computer.

FIG. 2 is a diagram showing an outline of the load balancing operation in the present invention. Figure 2 shows 5he
An example of how to request a specified remote computer to process a command process via ll is shown below. The processing procedure is described below.

(a) Load balancing (Loa) requested by 5bell
aBalance), the client checks the IPC and imports
Establish calPath (logical bus) 1 and start the requested side of load balancing of the specified remote personal computer. Next, the load balancing requesting side transfers the command string (nearmant process name and parameters) received from 5hell to the load balancing requesting side.

(b) The load balancing requestee identifies the command process name, input file name, output file name, and other parameters, and then calls Function Ncop.
Request y to transfer the command process and input data. Ncopy of Function is Logical
Enter the command process (program) using Path 2. Enter the command process (program) using % LogicalPath 3.
Transfer ile from the local computer to the remote computer.

If the command process and input data are on another computer other than the local computer, the remote computer may request another computer in Ren to transfer the command process and input data.

(C) The load balancing requestee passes the transferred command process name, input file name, and WORK output file name to 5hell and has it start the command process. The activated command process performs processing using the input/output File and the output Pie of WORK.

(d) The load balancing requestee shall
on Request ONcopy to transfer the WORK output File to the remote computer. Funct
ion's Ncopy is Logjcal Path 4
Use the WORK output File to specify the output F
i le , and the series of processing ends.

Figure M3 shows an example of an operation by an operator in the present invention. This operation example executes the assembly program on the specified remote computer and outputs the assembly result.
An example of having le transfer the information is shown below.

In Figure 3, ASM is a command, ] is an input file instruction, /Di, /5OTJRCE is an input File Shizukutake [is △ output File instruction, O/D110BJECT is an output F
ile instruction, && is load balancing instruction, ××× is remote
Indicates the address of the computer. Note that the command sequence shown in FIG. 3 is input by the operator from the keyboard.

〔Effect of the invention〕

As is clear from the above description, the present invention allows a personal computer to process multiple jobs at high speed without increasing hardware.

[Brief explanation of drawings]

Fig. 1 is a diagram showing an example of a network system in which a plurality of personal computers are interconnected via a network, Fig. 2 is a diagram illustrating the operation of load balancing in the present invention, and Fig. 3 is a diagram showing operations by an operator in the present invention. It is a figure which shows an example. 1-1 Ll-4...PC, 2...Switchboard,
3...Line ◇ Patent applicant: Fujitsu Limited Representative Patent Attorney: Yobu Kyotani

Claims (1)

[Claims] In a network system in which multiple computers are interconnected via a network, when one computer requests another idle computer to perform some of the multiple jobs that it should be executing itself, a request is made from the computer to the other computer. Transfer the necessary commands to execute the job, analyze the commands on the other computers mentioned above,
A load distribution method characterized by fetching a program for executing a job and input data from a predetermined personal computer, processing them, and transferring the processing results to the personal computer.