JPH03152654A - Simulation control system for information processing system - Google Patents

Abstract

PURPOSE:To ensure the simulation control with high efficiency regardless of the number of processors by securing a constitution where a system schedule offers the service to only those simulators registered in a simulator service table. CONSTITUTION:A simulator 211 registers the internal information on the simulation into a simulation service table 30 as the simulator internal information 31 during execution of the simulation. Then the simulator 211 interrupts its process after a fixed processing time and registers the internal information including the restart conditions into the table 30 as the simulator internal information 32 to return it to a system scheduler 21. The scheduler 21 offers the service to a simulator 212 based on the information 31. At the same time, the scheduler 21 transfers the information 32 to the information 31 in the table 30. Then the simulator 212 calls directly a simulator 213 during execution of the simulation. When the process is through with the simulator 213, the simulator 213 returns to the simulator 211.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a simulation control method for an information processing system, and particularly to a control method suitable for efficiently performing simulations of multiple processors.

[Conventional technology]

In order to simulate multiple processors, it is necessary to run each processor's simulator (pseudo program) independently and simulate parallel processing.
During this time, it is necessary to perform processing on another simulator, and after that processing is completed, to restart the interrupted processing on the simulator.

A system scheduler is provided to suspend and restart these processes. Conventionally, this system scheduler periodically unconditionally services the simulators of all processors sequentially and determines whether each simulator should resume processing. Incidentally, related technologies of this type include, for example, Japanese Patent Application Laid-Open No. 62-44843.
Publications No. 1, etc. can be cited.

[Problem to be solved by the invention]

The above conventional technology does not consider whether or not it is necessary to restart processing when servicing each processor's simulator, and since servicing may be performed even for a processor's simulator that does not require processing, it is difficult to connect As the number of processors increases, the number of services for simulators of processors that do not require processing also increases, resulting in a decrease in processing performance.

SUMMARY OF THE INVENTION An object of the present invention is to provide a simulation control method that can solve the problems of the prior art described above and efficiently perform service processing for the simulator of each processor regardless of the number of processors.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a simulator service table for registering service requests of each simulator in a simulator system consisting of a plurality of simulators that simulate each processor and a system scheduler that controls the operation of each simulator. , each simulator registers the service request in the simulator service table when it needs processing of other simulators and restart processing after its own simulator's processing is interrupted, and the system scheduler registers the service request registered in the simulator service table. It is characterized by controlling the operation of each simulator based on service requests.

[For production]

Each simulator responds to changes in processing time, data volume, internal state, etc., switching commands, and communications to other simulators.
Service request (simulator internal information including restart conditions)
is registered in the simulator service table. The system scheduler services a simulator that corresponds to a service request registered in the simulator service table only when the execution conditions are met. Therefore, the number of processors increases and the number of simulators increases accordingly. Even if the number of simulators increases, only the simulators that have requested the service will be serviced, so it is possible to provide efficient simulator service.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a configuration diagram of an embodiment of a simulator system and an information processing system to which the present invention is applied. In FIG. 1, an information processing system 1 includes a host processor 11 and a plurality of communication control processors 12 to 1n connected thereto. The simulator system 2 simulates the information processing system 1 and includes simulators 211 to 21n and a system scheduler 21 that controls them. Here, the simulator 211 simulates the host processor 11.
Further, the simulators 212 to 21n perform simulations of the communication control processors 12 to In, respectively, and the system scheduler 21 performs simulations for each of the simulators 211 to 21n.
simulator service table 30.

FIG. 2 is a detailed block diagram of the simulator system 2. The simulators 211 to 2in interrupt the previous processing when a factor such as a change in processing time, data amount, internal state of the simulator, switching command, or contact with another simulator occurs, and the simulator service table provided in the system scheduler 21 is suspended. 30 as simulator internal information 31 to 3n (service request 40;
Requests 41 to 4n), while the system scheduler 21 efficiently services each simulator 211 to 21n using the simulator internal information 31 to 3n registered in the simulator service table 30 during the interruption (system schedule 50; schedule 51~5n
).

FIG. 3 is a processing flowchart of the system scheduler 21. The system scheduler 21 performs initial settings such as creating a simulator service table 30 and determining the first simulator to be serviced (processing S1), and then schedules a service for the simulator (processing S1).
Processing S2).

After a certain period of time, the simulator service table 30
When a restart processing factor such as registration of certain simulator internal information 31 to 3n occurs (processing S3), the services of each simulator are scheduled in the order registered in the simulator service table 30 (processing S4), and the simulation These processes are repeated until the termination condition is satisfied (process S5).

FIG. 4 is a processing flowchart of each simulator 211 to 21n. When the simulators 211 to 21n receive a service from the system scheduler 21, if there is a suspended process, the simulators 211 to 21n resume the process, otherwise perform normal processing (processing S6.S7.S8), during the simulation process. If the processing of another simulator becomes necessary, that simulator is directly called or a service request is registered in the simulator service table 30 (processing S9.Si, O). When a process interruption factor occurs after a certain amount of processing, the simulator service table 30 displays the following information:
The simulator internal information necessary to restart the process is registered (process S1.L, 512). After these processes are completed,
Processing is done by the system scheduler 21 or each simulator 2
11 to 21n (processing 513).

Next, the system scheduler 21 and the simulator 21
Examples of operations 1 to 21n will be explained with reference to the time chart shown in FIG.

■ The system scheduler 21 performs initial settings (TI
).

■ After initial settings, service the simulator 211 (
T2).

(2) The simulator 211 needs to contact the simulator 212 during execution of the simulation, and registers its internal information in the simulator service table 30 as the simulator internal information 31 (T3).

■ After a certain processing time has elapsed, the simulator 211 suspends processing, registers internal information including restart conditions in the simulator service table 30 as simulator internal information 32, and returns to the system scheduler 21 (T4
).

(2) The system scheduler 21 services the simulator 212 using the simulator internal information 31 in the simulator service table 30 (T5). At this time, the system scheduler 21 transfers the simulator internal information 32 in the simulator service table 30 to the simulator internal information 31.

■ The simulator 212 directly calls the simulator 213 during simulation execution (T6).

■ After the processing of simulator 213 is completed, simulator 2
Return to 12 (T7).

■ When the simulator 212 executes processing for a certain amount of data, it interrupts the processing, registers the internal information in the simulator service table 30 as simulator internal information 32, and returns to the system scheduler 21 (T
8).

■ The system scheduler 21 uses the simulator internal information 3 registered in the simulator service table 30.
From 1.32 onwards, the simulators 211 and 212 are served (T9.Tl0).

Thereafter, in the same manner, the system scheduler 21 efficiently services each simulator 211 to 21n and performs simulation control of a plurality of processors.

〔Effect of the invention〕

As described above, according to the present invention, since the system scheduler services only the simulators registered in the simulator service table, simulation control can be efficiently performed for multiple processors regardless of the number of processors to be simulated.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram of an embodiment of a simulator system and information processing system to which the present invention is applied, Figure 2 is a detailed configuration diagram of the simulator system, Figure 3 is a processing flowchart of the system scheduler, and Figure 4 is a simulator system. FIG. 5 is a time chart of a specific operation example. 1... Information processing system, 2... Simulator system. 21... System scheduler, 211-21n... Simulator, 30... Simulator service table, 31-3n
...Simulator internal information-40...Service request, 50...System schedule. Figure 3

Claims (1)

[Claims] (1) In order to simulate an information processing system consisting of multiple processors, service requests for each simulator are registered in a simulator system consisting of multiple simulators that simulate each processor and a system scheduler that controls the operation of each simulator. A simulator service table is provided to provide a simulator service table, and each simulator registers a service request in the simulator service table when it needs processing of another simulator or restart processing after its own simulator's processing has been interrupted. A simulation control method for an information processing system characterized by controlling the operation of each simulator based on service requests registered in a service table.