JPH0823815B2 - Configuration control method - Google Patents

Description

The present invention relates to a configuration control method for an information processing system,
In particular, it relates to a system configuration control method capable of automatically restarting a diagnostic processor that controls connection between devices.

[Conventional technology]

Conventionally, in this type of configuration control method, management of a configuration information table indicating whether or not each arithmetic processor is configured in the information processing system, and instruction to enable / disable the connection between the arithmetic processor and the system control device When the system control processor manages both the configuration control register and the system control processor, or the system control processor manages the configuration information table, and the diagnostic processor controls the configuration control register when changing the configuration. First, the system control processor updates the configuration information table, then gives an instruction from the system control processor to the diagnostic processor, and the diagnostic processor controls the configuration control register to perform the second control. .

[Problems to be Solved by the Invention]

In the above-described conventional configuration control method, in the first method, the system control processor performs both management of the configuration information table and control of the configuration control register, so that the load on the system control processor increases and the system control processor There is a drawback that the performance is lowered, and eventually the performance of the entire information processing system is lowered.

In recent years, RAS (Reliability, Availability, Servicea
Since the ability of the diagnostic processor has been emphasized and the diagnostic processor is automatically restarted as a measure against the intermittent failure of the diagnostic processor, in the second method, the configuration is changed from the system control processor to the diagnostic processor. If the diagnostic processor is restarting automatically when the command is given, the system control processor waits until the diagnostic processor restarts and waits for the diagnostic processor to restart. On the other hand, there is a drawback that a complicated processing procedure such as giving an instruction to change the configuration must be taken.

[Means for solving the problem]

According to the configuration method of the present invention, a system controller, a main storage device connected to the system controller, a system control processor, one or a plurality of arithmetic processors and a diagnostic processor, and a predetermined fault in the diagnostic processor occur. In the configuration control method of the information processing system including the automatic restart means for automatically restarting the diagnostic processor only when the diagnostic processor is restarted, whether the diagnostic processor is being restarted in the system control device. And a configuration control register for instructing enable / disable of the connection between the arithmetic processor and the system control device under the control of the diagnostic processor, and each of them is controlled by the system control processor on the main storage device. Whether the arithmetic processor is logically configured in this information processing system, that is, whether it is targeted for tax assignment A first system configuration information table indicating that each arithmetic processor updated by the diagnostic processor at the time of executing the instruction of the system control processor or the failure processing program of the diagnostic processor is configured in the information processing system in the diagnostic processor. A second system configuration information table indicating whether or not the system control processor refers to the mode flag when disconnecting the arithmetic processor from the information processing system, and if the diagnostic processor is restarting, the first The state of the arithmetic processor on the system configuration information table is logically set to the configuration invalid state, and then the diagnostic processor is inevitably diagnosed as the first system configuration information table under the control of the system control processor after the restart is completed. Compare with the second system configuration information table under processor control, If there is an arithmetic processor whose configuration is disabled only on the first system configuration information table, the configuration control register is set to a predetermined state, the connection between the arithmetic processor and the system control device is invalidated, and It is configured to control the state of the arithmetic processor on the system configuration information table of 1 to be updated to the configuration invalid state.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

FIG. 1 shows the configuration of an information processing system that implements a configuration control method according to an embodiment of the present invention. In FIG. 1, the information processing system according to this embodiment includes a system controller 1 and a signal line 101 connected to the system controller 1.
A main memory device 2 connected via a signal line 102, a system control processor 3 connected via a signal line 102, a signal line 103,
The arithmetic processors 4 and 5 connected via 104 and the signal line 10
3, a diagnostic processor 6 connected to the diagnostic processor 6, and an automatic restart means 7 connected to the diagnostic processor 6 via a signal line 106.

The system control processor 3, the arithmetic processor 4, the arithmetic processor 5, and the diagnostic processor 6 can access the main memory 2 via the system controller 1 and can communicate with each other (hereinafter referred to as P communication). it can. The system controller 1 controls the P communication between the processors and the access from the processors to the main memory 2.

The system control device 1 also has a mode flag 8 and a configuration control register 9. The mode flag 8 indicates whether or not the diagnostic processor 6 is being automatically restarted, and is set to "1" by the diagnostic processor 6 when a failure capable of being automatically restarted occurs in the diagnostic processor 6,
Is set to "0" by the diagnostic processor 6 when the automatic restart of is completed and can be referred from the system control processor 3. The configuration control register 9 is a register that controls the validity / invalidity of the connection between the arithmetic processors 4 and 5 and the system controller 1, and can be set by the diagnostic processor 6. The main memory 2 stores a system configuration information table A10 that provides operating system programs, user programs, and configuration information of the arithmetic processors 4 and 5. This system configuration information table A10 indicates whether or not the arithmetic processors 4 and 5 are logically configured in the information processing system, and is created by the system control processor 3 at the initial startup of the information processing system, and the configuration is changed. When it is updated, it is updated by the system control processor 3. The system control processor 3 controls the information processing system, executes an operating system program and a user program stored in the main memory 2, and allocates tasks to the arithmetic processors 4 and 5. Also,
The system control processor 3 creates the system configuration information table A10 at the initial startup of the information processing system, updates the system configuration information table A10 when invalidating the configurations of the arithmetic processors 4 and 5, and then sets the mode flag. If 8 is "0", that is, if the diagnostic processor 6 is not being automatically restarted, the diagnostic processor 6 is instructed to invalidate the connection between the arithmetic processor and the system control device 1 by P communication.

The arithmetic processors 4 and 5 are processors that specialize in high-speed arithmetic such as vector arithmetic.
Execute the task assigned from. The diagnostic processor 6 is a processor that performs a failure process of the information processing system, and has a system configuration information table B11 which is a copy of the system configuration information table A10. When the diagnostic processor 6 receives an instruction from the system control processor 3 to invalidate the configuration of the arithmetic processors 4 and 5 by P communication, the diagnostic processor 6 updates the system configuration information table B11 and then stores a predetermined value in the configuration control register 9. A value is set and the connection between the arithmetic processors 4 and 5 and the system controller 1 is invalidated. Further, the diagnostic processor 6 sets the mode flag 8 to “1” when a failure that can be automatically restarted occurs, and sets the mode flag 8 to “0” after the automatic restart is completed.
And the system configuration information table A10 managed by the system control processor 3 is compared with the system configuration information table B11 managed by the diagnostic processor 6 itself, and the configuration is invalidated only on the system configuration information table A10. If there is a processor, system configuration information table
The state of the arithmetic processor on B11 is updated to the configuration invalid state, a predetermined value is set in the configuration control register 9, and the connection between the arithmetic processor and the system controller 1 is invalidated.
When the diagnostic processor 6 has a failure that can be automatically restarted, the automatic restarting means 7 detects it and automatically restarts the diagnostic processor 6.

As described above, the system control processor 3 is
When disabling the configuration of the arithmetic processors 4 and 5 from the present information processing system, first, the state of the arithmetic processor of the system configuration information table A10 is set to the disabling state, and then the mode flag 8 is referred to. If the automatic restart is not being performed, the diagnostic processor 6 is instructed to invalidate the connection between the arithmetic processor and the system control device 1 by P communication by P communication, and the diagnostic processor 6 is automatically restarting. If there is, no instruction is given to the diagnostic processor 6. (However, later, when the diagnostic processor 6 completes restarting, the arithmetic processor and the system controller 1
Ineffective connection with. In addition, when the diagnostic processor 6 receives an instruction from the system control processor 3 through P communication to invalidate the connection between the arithmetic processors 4 and 5 and the system control device 1, a predetermined value is set in the configuration control register 9. A system configuration information table A10 managed by the system control processor 3 at the completion of automatic restart when the connection between the arithmetic processor and the system control device 1 is invalidated,
System configuration information table managed by the diagnostic processor 6
If there is an arithmetic processor whose configuration is invalidated only on the system configuration information table A10 by comparing with B11, the state of the arithmetic processor on the system configuration information table B11 is updated to the configuration invalid state, and the configuration control register By setting a predetermined value in 9 and disabling the connection between the arithmetic processor and the system control device 1, information can be obtained by simple control regardless of whether the diagnostic processor 6 is being automatically restarted. The configuration of the processing system can be changed.

〔The invention's effect〕

As described above, according to the present invention, when the diagnostic processor completes the automatic restart, the system configuration information table managed by itself and the system configuration information table managed by the system control processor are matched, and the arithmetic processor and the system control device By controlling the enable / disable of the connection with the system control system, the system control processor waits for the completion of the restart if the diagnostic processor is restarting, and then issues a configuration change instruction to the diagnostic processor again. The configuration control can be performed without the need of taking various processing procedures. As a result, the load on the system control processor is reduced, and the performance of the entire system can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an information processing system which is an embodiment of the present invention. 1 ... System control device, 2 ... Main memory device, 3 ... System control processor, 4,5 ... Arithmetic processor, 6 ...
… Diagnostic processor, 7 …… Automatic restart means, 8 ……
Mode flag, 9 ... Configuration control register, 10 ... System configuration information table A, 11 ... System configuration information table B, 101-106 ... Signal lines.

Claims (1)

[Claims] 1. A system controller, a main memory connected to the system controller, a system control processor, one or more arithmetic processors and a diagnostic processor, and when a predetermined fault occurs in the diagnostic processor. In the configuration control method of the information processing system including the automatic restart means for automatically restarting the diagnostic processor only, the system controller displays whether or not the diagnostic processor is restarting. And a configuration control register for instructing enable / disable of the connection between the arithmetic processor and the system controller under the control of the diagnostic processor, and each arithmetic processor under the control of the system controller on the main memory. Indicates whether or not is logically configured in this information processing system, that is, whether it is targeted for tax assignment. The system configuration information table of No. 1 is provided, and whether or not each arithmetic processor updated by the diagnostic processor at the time of executing the instruction of the system control processor or the failure processing program of the diagnostic processor is configured in the information processing system in the diagnostic processor. The second system configuration information table shown is provided, the system control processor refers to the mode flag when disconnecting the arithmetic processor from the information processing system, and if the diagnostic processor is restarting, the first system configuration information The state of the arithmetic processor on the table is logically set to the configuration invalid state, and then after the restart of the diagnostic processor is completed, the first system configuration information table under the system control processor management and the diagnostic processor management The second system configuration information table of If there is an arithmetic processor whose configuration is disabled only on the system configuration information table, the configuration control register is set to a predetermined state and the connection between the arithmetic processor and the system control unit is invalidated,
In addition, the configuration control method is characterized in that the state of the arithmetic processor on the second system configuration information table is controlled to be updated to the configuration invalid state.