JPH07325730A - Multiprocessor device - Google Patents

Abstract

PURPOSE:To apply no processing load to a general control processor device and not to interrupt other processings when a multiprocessor device undergoes a fault diagnosis. CONSTITUTION:A multiprocesor device contains the job-based processor devices 4-6 and a general control processor device 1 which is connected to the devices 4-6 to control them via a common bus 4. Then the devices 4-6 are provided with the diagnostic test programs 17-19 which check the faults. If a job-based processor device detects a fault, this fault is checked by the diagnostic test program of the relevant processor device. Under such conditions, the device 1 is not needed and therefore it is not required to occupy the bus 2 to interrupt other processings for each check of the faults. Furthermore processing load is applied to the device 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiprocessor device incorporating a diagnostic test program.

[0002]

2. Description of the Related Art A multiprocessor device is known in which several devices each equipped with a processor are connected by a common bus, and the overall control is performed by a processor that performs overall control. In such a multiprocessor device, a diagnostic test program is used to check whether or not each device connected to the common bus has failed. If it is out of order, it will be disconnected from the common bus and repaired.

FIG. 2 shows such a conventional multiprocessor device. In FIG. 2, 1 is a processor device for total control, 2 is a common bus, 3 is a diagnostic test program, 4 to
6 is a work unit processor device, 7 to 9 are I / F and disconnection circuits, 10 to 12 are processing programs, 13 to 15 are MPU (microprocessor units), and 16 is a diagnostic test processor device.

The work unit processor devices 4 to 6 are devices for performing a specific work, such as a disk drive device, a magnetic tape drive device, and a printer device. These devices include MPU (13-
15) In addition to the processing programs (10 to 12) for performing the work imposed on each device, and the disconnection circuit for disconnecting the device from the common bus 2 when the interface with the common bus 2 fails The I / F and the separation circuits (7 to 9) including and are mounted respectively.

The integrated control processor unit 1 is for comprehensively controlling the work unit processor units 4 to 6, and includes a diagnosis for diagnosing a failure of each work unit processor unit. The test program 3 is installed. The diagnosis as to whether or not there is a failure is made when the work unit processor device 4 or the like is executing a processing program and detects an abnormality. In that case, the data necessary for the diagnosis is ordered from the work unit processor device.

FIG. 4 is a diagram showing an operating condition at the time of failure diagnosis in the conventional example. The downward line represents the flow of time. When a processing start instruction 22 is issued from the overall control processor device 1 to the work unit processor device 4, the work unit processor device 4 instructs the process 2 to perform the instructed process 2.
Perform 0. If an abnormality is detected while performing processing 20,
An NG notification 24 is issued to the integrated control processor device 1.

Then, the integrated control processor device 1
The execution of the diagnostic test program 3 is started, and the data collection instruction 28 is issued to collect the data necessary for the failure diagnosis. From this stage, the failure diagnosis process 25 is started. In that case, a program (micro diagnostic program) for collecting data is loaded into the work unit processor device 4. When the designated data is collected in the process of one data collection 26, a data report 29 is made to the integrated control processor device 1. Then, the data collection instruction 28 for collecting another data is issued, and the data is collected in the same manner.
This process is the data collection process 30.

The integrated control processor device 1 comprehensively judges the data collected in the data collection process 30 and performs a failure diagnosis 27. If it is determined that there is a failure, a disconnection instruction is issued to the work unit processor device 4 to disconnect it from the common bus 2.

The fault diagnosis of each work unit processor device is performed by the integrated control processor device 1 collecting diagnostic data reports and making a diagnosis based on them, so that the common bus 2 is used for diagnostic purposes. It is occupied and the integrated control processor device 1 is involved until the end of the diagnosis.
Therefore, no other work can be performed during the failure diagnosis process 25. After the process 20, the process 21 that the work unit processor device 5 is trying to perform is the fault diagnosis process 25.
You can finally start it after.

It should be noted that the diagnostic test program 3 is not installed in the integrated control processor device 1, but a diagnostic test processor device 16 is separately provided as indicated by the dotted line, and the diagnostic test program 3 is installed therein. There is also a device. In such a multiprocessor device, the abnormality detection notification from the work unit processor device is sent to the diagnostic test processor device 16.

At the time of fault diagnosis, loading a program for data collection into the processor unit for work unit or fetching data required for diagnosis to the processor unit for overall control 1 is performed through the common bus 2. Therefore, the common bus 2 is occupied during that time, and other processing cannot be performed. Therefore, it is considered that the diagnostic test processor device 16 and each work unit processor device are connected by a dedicated bus different from the common bus 2.

As a conventional document relating to a multiprocessor device having a failure diagnosis function, there is, for example, Japanese Patent Publication No. 3-41863.

[0013]

However, the above-mentioned conventional multiprocessor device has the following problems. The first problem is that the common bus is occupied every time a failure of the work unit processor device is investigated, and thus other processing is interrupted. The second problem is that the processing load of the integrated control processor device is heavy because the integrated control processor device is involved in the failure investigation. A third problem is that if a diagnostic test processor device or a dedicated bus is provided in order to reduce the processing load on the overall control processor device or interrupt other processing, the cost increases. That is the point. An object of the present invention is to solve the above problems.

[0014]

In order to solve the above problems, according to the present invention, several work unit processor devices and a total control processor device for controlling them are connected via a common bus. In the multiprocessor device thus constituted, the diagnostic test program for checking the failure of the work unit processor device is installed in each work unit processor device.

[0015]

[Operation] In a multiprocessor system, a diagnostic test program is installed in each work unit processor system,
The work unit processor device that detects the abnormality investigates the failure by using the diagnostic test program installed therein. In this way, it is possible to prevent the common bus from being occupied to interrupt the other processing of the multiprocessor apparatus and to impose a processing load on the overall control processor apparatus every time the failure is investigated.

[0016]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a multiprocessor device of the present invention. Reference numerals correspond to those in FIG. 2, and 17 to 19 are diagnostic test programs. Since the same reference numerals as those in FIG. 2 are the same, the description thereof will be omitted.

In terms of configuration, the difference from the conventional multiprocessor device is that the diagnostic test program is installed in each work unit processor device and not in the integrated control processor device 1. The operation for diagnosing a failure will be described by taking the work unit processor device 4 as an example.

FIG. 3 is a diagram showing an operating condition at the time of failure diagnosis in the present invention. The reference numerals correspond to those in FIG. When the overall control processor device 1 issues a processing start instruction 22 to the work unit processor device 4, the work unit processor device 4 activates the processing program 10 and executes the process 20. When an abnormality is detected during execution, the NG notification 24 is sent to the integrated control processor device 1 to inform it of that fact, and the diagnostic test program 17 installed therein is run to perform a failure diagnosis. The unit-of-work processor device 4 then proceeds to the failure diagnosis process 25.
Then, the data necessary for the diagnosis is collected, and the failure diagnosis is performed based on the data.

In the present invention, since the integrated control processor device 1 does not perform the failure diagnosis, the work unit processor device 4 is used.
Upon receiving the NG notification 24, the processing start instruction 23 is issued so as to start the next scheduled processing 21 by the work unit processor device 5.

In this way, the common bus 2 is used when an abnormality is detected only when the general control processor unit 1 is notified that an abnormality has been detected, and the diagnostic test is performed. When the program is executed, the processing load is not imposed on the integrated control processor device 1.

[0021]

As described above, according to the present invention, several work unit processor devices and a total control processor device for comprehensively controlling them are connected via a common bus. In, the diagnostic test program for checking the failure of the processor unit for work unit,
Since the work unit processor device is installed in each work unit processor device, the work unit processor device that has detected an abnormality diagnoses a failure by a diagnostic test program installed therein.

Therefore, the common bus is occupied every time a failure diagnosis is made, and other processing of the multiprocessor device is interrupted,
There is no need to impose a processing load on the integrated control processor device. Further, the cost can be reduced as compared with the case where a diagnostic test processor device and a dedicated bus are separately provided.

[Brief description of drawings]

FIG. 1 is a multiprocessor device of the present invention.

FIG. 2 Conventional multiprocessor device

FIG. 3 is a diagram showing an operating condition at the time of failure diagnosis in the present invention.

FIG. 4 is a diagram showing an operation state at the time of failure diagnosis in a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Total control processor device, 2 ... Common bus, 3 ... Diagnostic test program, 4-6 ... Work unit processor device, 7-9 ... I / F and isolation circuit, 10-12 ... Processing program, 13- 15 ... MPU, 16 ... Diagnostic test processor device, 17-19 ... Diagnostic test program, 2
0, 21 ... Process, 22, 23 ... Process start instruction, 24 ... N
G notification, 25 ... Failure diagnosis process, 26 ... Data collection, 27
… Fault diagnosis, 28… Data collection instruction, 29… Data report, 30… Data collection process

Claims (1)

[Claims] 1. A processor unit for several work units,
In a multiprocessor device in which an integrated control processor device for controlling them comprehensively is connected via a common bus, a diagnostic test program for checking a failure of the work unit processor device is provided for each work unit processor device. A multiprocessor device characterized by being installed in.