JPS5833976B2 - Backup control method in multiprocessor processing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a backup system for a multiprocessor processing system, particularly in a multiprocessor processing system in which a plurality of central processing unit systems share a plurality of peripheral device systems. A switching device is provided at the intersection of the system bus and the peripheral device bus, and each switching device is controlled by software control from the central processing unit and stored program control within the configuration processing unit. In a multiprocessor processing system, the backup function is enhanced by being able to be turned off by at least three controls: control from the system control unit and control from the power supply control unit in the component processing unit. This is related to the up system (goods) system.

In order to improve the reliability and processing capacity of data processing systems, multiple central processing unit systems and multiple groups of peripheral equipment systems are combined, so that even if one central processing unit system goes down, other central processing units Efforts have been made to enable bank-up depending on the system, or to enable parallel processing by a plurality of central processing unit systems.

In the case of such a system configuration, when the central processing unit system is connected to the peripheral device system, the connection state may become undesirable due to an operator's operational error or a runaway program in the central processing unit system. be prevented from being removed.

However, if the reason for failure (failure occurrence, etc.) is that the peripheral wrapping thread consisting of 4 continues to be connected to one central processing unit system for a predetermined period of time or more, it is necessary to release this state. Become.

In other words, consideration must be given to ensure that a failure in one central processing unit system, a failure in one peripheral device system, or a failure in the switching device itself does not have an undesirable effect on the operating status of other healthy systems. It must be.

For this purpose, a switching device is provided at each intersection of the central processing unit system bus line and the peripheral device system bus line, which is turned on and off independently of each other, so that the bus can be disconnected independently as necessary. .

In this case, it would be undesirable to monitor the above-mentioned failures in each switching device because the number of switching devices would be large.

However, on the other hand, as mentioned above, it is necessary to prevent the connection state from being undesirably released due to program runaway or the like.

In the multiprocessor processing system as described above, the present invention takes into consideration the fact that one of the switching devices undesirably becomes hung up, and controls the switching device using a plurality of control methods to prevent the switching device from hanging up. The purpose is to make it possible to cancel the up state, and the purpose is to provide a configuration suitable for that purpose.

To this end, the hang-up control method in the multiprocessor processing system of the present invention allows a plurality of central processing unit systems and a plurality of groups of peripheral device systems to switch each central processing unit system bus line and each peripheral device system bus line. In a multiprocessor processing system that is linked by turning on and off through devices, the processors are provided corresponding to the intersections of the individual central processing unit bus lines and the individual peripheral device bus lines and are controlled independently from each other. A switching device, a power supply control section for controlling the power supply of the central processing unit system and the peripheral device system, and a configuration processing unit having a system system section for stored program control are provided, and each of the central processing units A configuration control device is provided correspondingly and configured to perform communication between each central processing unit and communication to the component processing unit, and each of the switching devices is controlled by software from the corresponding central processing unit. The device is characterized in that it is configured to be unconditionally controlled to be turned off by at least three independent controls: control from the system control unit and control from the power supply control unit.

This will be explained below with reference to the drawings.

The figure shows the configuration of an embodiment of the present invention.

In the figure, 1-1 to 1-3 are central processing units, respectively, 2-1 to 2-3 are central processing unit system bus lines, and 3-1 to 3 are respectively central processing units.
-3 is a configuration control device, which monitors the status of each corresponding central processing unit system and also communicates between each central processing unit and with the configuration processing device described later; 4n is the husband peripheral device system (or its channel), 5-1 to 5n are the peripheral device system bus lines, and 6-
1 to 6-3 are central processing unit system power supply devices, I
-1 to 7n are peripheral device power supply devices, 8 is a configuration processing device, 9 is a switching device control unit, and 10 is a system control unit, which controls the internal configuration processing device 8 and monitors the power supply by stored program control. (goods), etc.
Reference numeral 11 denotes a power supply control unit that monitors and controls the power supply for each central processing unit system, each peripheral device system, the switching device control unit 9, etc., and 12 a console that enables manual control □□. , SW1□ to SW3n represent switching devices, Xl to X6 represent power supply lines, yl to y7 represent power monitoring control signal lines, respectively, and zl to z6 represent bus forced switching signal lines, respectively.

In the figure, control lines from the switching device control section 9 to each of the switching devices SW1 to 5W3n are omitted.

In the case of the system shown in FIG. 1, it goes without saying that, for example, the central processing unit 1-1 uses a software system to
-1 switching device 5W11. SW1□,...
5W1nt is controlled to turn on and off to connect or disconnect each peripheral device system.

Each configuration control device 3-1 to 3-3 is provided corresponding to the corresponding central processing unit 1-1 to 1-3, respectively, and each central processing unit is currently using which peripheral system bus. It has the function of notifying other central processing units whether a failure is occurring in the corresponding central processing unit, and notifying the other central processing units or the system system department 10 of the component processing unit 8 of the occurrence of a failure in the corresponding central processing unit.

The system control unit 10 in the configuration processing device 8 stores
It operates under program control, and controls turning on and off each switching device SW via the switching control unit 9 when a failure occurs in the central processing unit system or peripheral device system, and also monitors the power supply of the entire system. control.

Furthermore, under the control of the system control unit 10, the power supply control unit 11 monitors the power supply of each central processing unit system, the power supply of each peripheral device system, the power supply of the switching control unit 9, etc., and takes measures against power supply failures. do.

The console 12 is also configured to manually control the switching control section 9 to turn on and off each switching device SW. As described above, each switching device 5W11 to SWs n is
In order to perform information processing, a corresponding central processing unit 1-1
or 1-3 to turn on and off by software control.
It will be turned off.

And the state is each constituent system (goods) device 3-1 or 3-
3, the other central processing units and configuration processing units 8 are notified.

The system control unit 10 in the configuration processing device 8 controls the system control unit 10 in the event of a failure involving the power supply in the system.

However, if each of the above-mentioned switching devices undesirably hangs up for some reason, it may affect not only the central processing unit system bus and the peripheral device system bus to which the switching device is connected, but also depending on the configuration of the system. It can often affect other buses.

For this purpose, it is necessary to correctly disconnect the switching device SW that has become hung up.

For this reason, the following measures are taken.

CI) Bus switching under normal operating conditions.

Under normal operating conditions, as mentioned above, for example, the central processing unit 1-1 turns on and off the switching device 5W11 through software control, and the console 1
2, the operator turns on/off via the system control unit 10.
Run off.

These results are notified to each of the central processing units 1-1 to 1-3 via the configuration control devices 3-1 to 3-3.

(9) Bus switching in case of central processing unit failure.

For example, if a failure (including a power failure) occurs in the central processing unit 1-1, the failure occurs in the configuration controller 3-1.
, and is notified to the alien processing device 1-2.1-3 as well as to the system control unit 10 in the configuration processing device 8.

As a result, the system control section 10, via the switching control section 9, controls the switching devices 5W11, 5W12. ...Controls S Wln to the bus disconnected state.

This state is then notified to the central processing unit via the configuration control device.

Spring switching when the switching control unit 9 fails.

When a power failure occurs in the switching control unit 9, the power supply control unit 11 recognizes this via the control line y7, and sends a message to this effect from the system control unit 10 to each component control device 3-1 to 3.
-3 to the central processing units 1-1 to 1-3, and the power supply control unit 11 sends a notification to the bus forced switching signal lines z1 to z6.
Each switching device SW1 to 5W3n'if is turned off via the switch.

□ Bus switching when the switching device SW itself fails.

For example, if the switching device 5W11 itself fails, although not shown in the figure, since an auxiliary power supply unit is associated with each switching device SW, the system control unit 10 will respond to the switching device 5W11. Turn off the power to the auxiliary power supply unit.

Then, each central processing unit 1-1 to 1-3 is notified of this via each configuration control device 3-1 to 3-3.

M Bus switching when the operator leaves any particular switching device in the ON state via the console 12.

The system control unit 10 is configured to monitor the time from the time when the operator turns on an arbitrary specific switching device, for example, SW1□, using software.

If a predetermined period of time or more has elapsed, the system control unit 10
The switching controller 9 forces the bus switching through the switching device 5W11.

That is, the switching device 5w11i is turned off.

Regarding the power supply for the system control unit 10 and the power supply control unit 11.

Although not shown in the drawings, the system control unit 10 and the power supply control unit 11 have a structure in which power supplies are multiplexed to prevent each of these control units from going down.

As explained above, according to the present invention, when the switching device SW becomes undesirably hung up, (i) the central processing unit itself that instructs the on state can know; and (il) If the central processing unit itself cannot make a determination, the other central processing units will notify the system control unit via the configuration control unit so that the system control unit can know (other central processing units will not be directly involved); (Since the power supply control unit can know about the hang-up state due to an abnormality in the power supply system, the software side by the central processing unit and the switching control unit 9 from the system control unit 10 and control fM from the power supply side part 11.
]t- The bus disconnection of the switching device is performed by control of a plurality of systems including at least the following.

For this reason, there is almost no possibility that the cutting device will continue to hang up, which can contribute to improving the reliability of the entire system.

[Brief explanation of drawings]

The figure shows an embodiment of the invention. In the figure, 1 is the central processing unit, 2 is the central processing unit system bus line, and 3
5 is a configuration control device, 5 is a peripheral device system bus line, 8 is a configuration processing device, 9 is a switching control section, 10 is a system control section, 11 is a power supply control section, and 12 is a console.

Claims (1)

[Claims] 1. In a multiprocessor processing system in which a plurality of central processing unit systems and a plurality of groups of peripheral device systems are linked by turning each central processing unit system bus line and each peripheral device system bus line on and off via a switching device. , a switching device provided corresponding to the intersection of the central processing unit system bus line and each peripheral device system bus line and controlled independently from each other; It is equipped with a component processing unit having a power supply control unit for controlling the system and a system control unit based on a stored program system. It is equipped with a device on the configuration side that performs communication to the configuration processing device, and each of the switching devices receives the software system from the corresponding central processing unit and the system control from the system control unit. Bank-up control in a multiprocessor processing system, characterized in that it is configured to be unconditionally turned off by at least three independent controls including control from the power supply control unit. method.