JPS62100845A - Test system for information processor - Google Patents

Abstract

PURPOSE:To secure the continuation of the test of an information processor even in case a random test program stalls by some reason, by using a stall monitor means and a test continuing means for the random test program. CONSTITUTION:A started random test task 10 produces a random test program 20 and starts the program 20 of an information processor 2 to be tested via an inter-device interface 7 to carry out a random test. While the task 10 monitors the stall of the processor 2 and then reads out the hardware information on the processor 2 via the interface 7 to deliver it to an external memory device as an error message. At the same time, the task 10 initializes the processor 2 to that the program 20 can be carried out again and continues the random test as long as an end request is not received.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a test method for information processing devices, and particularly to a test method using randomly generated test data and test procedures.

[Conventional technology]

Conventionally, this type of information processing device testing method uses a random test program consisting of test data and test procedures randomly generated using random numbers, for example, to pre-control the information processing device under test! Compare the results executed with l as an action and the results executed with antecedent '41■ disabled, and if a comparison error is detected, output an error message, and then run the next random test program. was to be generated and the test continued.

[Problems to be Solved by the Invention] However, in the conventional testing method for information processing devices described above, when the random test program stalls for some reason, the test cannot be continued, so the test cannot be continued for a long time. The disadvantage was that automatic continuous execution was not possible, resulting in poor test efficiency.

It is an object of the present invention that the random test program
The objective is to improve testing efficiency by making it possible to continue testing even when the test is completed.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a 1rJ program that generates and executes a random test program in the main storage device for testing an information processing device connected to the main storage device. In a test method for an information processing device, a random test program generating means, a random test program starting means for starting a random test program generated by the generating means on the information processing device, and a random test program started by the cough starting means. an execution result determination means for determining the execution result of the test program; and a step of the activated random test program.
a stall monitoring means for monitoring a stall; and a test continuation means for resetting the information processing device to a state in which a random test program can be executed and continuing the random test when the stall monitoring means detects a stall. Equipped with.

[Effect]

If the random test program started on the information processing device under test stalls for some reason, this is detected by the stall monitoring means, and the test continuation means returns the information processing device under test to a state where it can execute the random test program again. The settings will be set and the test will continue.

〔Example〕

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

FIG. 1 is a block diagram of main parts of an embodiment of the present invention, and
2 is a test processing device, and 2 is an information processing device under test. The test processing device 1 includes a main storage device 3 and an instruction processing section 5, and a random test program generation means 1 is stored on the main storage device 3.
1. Random test program starting means 12. Harm f
i4u result determination means 13. A random test task 10 having a stall monitoring means 14 and a test continuation means 15 and an operating system 30 are stored. The information processing device under test 2 also includes a main storage device 4 into which a random test program 20 is loaded, and an instruction processing section 6.
connected by.

FIG. 2 shows an example of the contents of the random test program 20 generated by the random test task 10, which includes a total of 100 instructions generated using random numbers and an inter-device communication instruction to notify the end of the random test program. and random test data including register data and memory data which are also generated using random numbers and are used by this random test procedure.

3 is a flowchart showing an example of the processing of the random test task IO, FIG. 4 is a flowchart showing an example of the processing performed by the information processing device under test 2, and FIG. 5 is a flowchart showing an example of the processing performed by the information processing device under test 2.
100 to 113.2 is a flowchart showing an example of the processing of
00-204.300-302 indicate each step. The operation of this embodiment will be explained below with reference to each figure.

First, the operating system 30 starts the random test task 10 from an external storage device (not shown) or the like.
J device 3 and start this random test task 10.

As shown in FIG. 3, the activated random test task 10 first generates the random test program shown in FIG. Set the advance control of the command processing unit 6 of the information processing device 2 to a valid state (101), and then run the random test program 20 on the inter-device ink face 7.
After being loaded into the main storage device 4 of the information processing device under test 2 via the inter-device ink face 7, the random test program 20 is sent to the information processing device under test 2 through inter-device communication. (102).

The information processing device under test 2 that has received the inter-device communication from the test processing device 1 transmits the inter-device communication (for example, as shown in FIG. 4).
3 Performs interrupt processing. First, the instruction processing unit 6 loads the register data of the random test program 20 loaded into the fixed address of the main memory 4 into the register visible to the software (200), and the instruction processing unit 6 executes the first random test procedure.
Set the instruction counter so that it can be executed from the instruction (2)
01). Next, the instruction processing unit 6 performs the first test of the random test procedure.
The instructions are executed sequentially starting from the instruction with advance control enabled (202), and when the 100th instruction is executed, the contents of the software-visible register are stored in the register data area of the random test program 20 (203), and then the data is transferred between the devices. The communication command is executed to transmit inter-device communication to the test processing device 1 via the inter-device ink face 7, and notify the end of the random test program 20 (204).

Note that the above example is from the first command to the first command of the random test procedure.
Although instructions up to 00 are executed, the instruction start address is not necessarily the first instruction, but can be executed from any address, and the number of executed instructions can be any number.

After executing step 102 in FIG. 3, the random test task 10 monitors the termination state of the information processing device under test 2 (stall monitoring) (103).

This stall monitoring of the random test program 20 is performed, for example, as shown in FIG. That is,
First, it is checked whether a termination notification has been received from the information processing device under test 2 through inter-device communication (300), and if so, it is determined that the termination has been completed normally.

On the other hand, if it is not received, check the clock status of the information processing device under test 2 via, for example, the diagnostic control line of the inter-device ink face 7 (301), and if the clock is operating, check the elapsed time of the main stall monitoring process. 302)
For example, if a certain period of time has passed since the random test program 20 was started, the process returns to step 300. However, if a clock stop state is detected in step 301, or if it is detected in step 302 that a certain period of time has elapsed, a stall is determined.

Now, when the end state of the random test program 20 is determined to be a normal state in step 103 in FIG. Main storage device 3 via inter-WF ink face 7
104), to set the advance control of the command processing unit 6 of the information processing device under test 2 to an invalid state via the diagnostic control line of the A direct interface 7, 105); In the next step 106, the same process as step 102 is performed to load the random test program into the main storage device 4 again and start it (106). Here, the information processing device under test 2 performs the processing shown in FIG. 4, but this time the advance control is set to an invalid state, so unlike when it was started in step +02, the advance control is disabled. It operates in this condition. Next, the random test task 10 determines the end state of the random test program 20 in step 107 in the same manner as in step 103,
When it is determined that the program has ended normally, the execution results of the random test program 20 are saved in the work area on the main storage device 3 (108), similar to step 104.

Subsequently, the random test task 10 that has finished saving the execution results of the random test program 20 compares the execution results saved in step 104 with the execution results saved in step 108 (109). If they do not match, the process proceeds to step 111, and if there is a mismatch, a message indicating that an error has been detected is sent.
Random test program 2 generated in step 100
0. And the execution results saved in steps 104 and 108 are sent to the operating system 3 as an error message.
0 to an external storage device, etc. 110)
Then, a termination request from the operating system 30 is checked (11.1), and if there is no termination request, the process returns to step 100 to continue the random test, and if there is a termination request, the test is terminated.

On the other hand, the random test task 10 that has detected a stall in the random test program 20 in step 103 or step 107 sends a message to the effect that the stall has been detected in step 100.
The information processing device 2 to be tested is successively transmitted via the random test program 20 generated by the device and the inter-device ink face 7.
Outputs hardware information (for example, the contents of registers that are invisible to the software and EIF (error indicator free knob) information) to, for example, an external storage device as an error message (112), and
The information processing device under test 2 is initialized to a state where the random test program can be executed again (113). Thereafter, a termination request is checked in step 111, and if there is no termination request, the process returns to step 100 to continue the random test.

Although one embodiment of the present invention has been described above, the present invention is not limited only to the above embodiment, and may be modified in various ways. For example, in the above embodiment, a test processing device 1 is provided for testing the information processing device under test 2, and the test processing device 1 generates a random test program, starts the random test program, determines the execution result, and obtains error information. , stall monitoring and test continuation were carried out, but
It is also possible to omit the test processing device 1 by having the information processing device under test 2 itself perform these processes. Also, is there an antecedent as mentioned above as part of the test content? ffn
Of course, it is also possible to conduct other types of tests other than the one in which the results of both executions are compared by switching between enable and disable.

〔Effect of the invention〕

As described above, since the present invention includes a random test program stall monitoring means and a test continuation means, automatic continuous execution for a long time is possible, and the test efficiency can be improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a main part of an embodiment of the present invention, FIG. 2 is a diagram showing an example of the contents of a random test program 20 generated by the random test task 10, and FIG. 3 is a diagram showing the processing of the random test task 10. FIG. 4 is a flowchart showing an example of the processing performed by the information processing device under test 2, and FIG. 5 is a flowchart showing an example of the processing of the stall monitoring means 14. 2 is a test processing device, 2 is an information processing device under test, 3.4 is a main memory, 5.6 is an instruction processing unit, 7 is an interface between devices, 10 is a random test task, and 11 is a random test program 12 is a random test program starting means, 13 is an execution result determining means, 14 is a stall monitoring means, 5 is a test continuation means, 20 is a random test program, and 30 is an operating system.

Claims (1)

[Scope of Claim] A testing method for an information processing device that generates and executes a random test program in the main storage device for testing an information processing device connected to the main storage device, comprising: random test program generation means; Random test program starting means for starting the random test program generated by the generating means on the information processing device; Execution result determining means for determining the execution result of the random test program started by the starting means; a stall monitoring means for monitoring a stall in a random test program that has been run; and a test for continuing the random test by resetting the information processing device to a state in which the random test program can be executed when a stall is detected by the stall monitoring means. 1. A testing method for an information processing device, characterized by comprising a continuation means.