JPH0443450A - Command processing system - Google Patents

Abstract

PURPOSE:To improve processing speed and processing efficiency by providing an inference information including command issuing part and an inference information including command analysis execution part. CONSTITUTION:The inference information including command issuing part 3 provided for a host device 1 issues a command including inference information and transmits it to a slave device 2. When the command is issued, the inference information including command analysis execution part 4 in the slave device 2 analyzes the command and sequentially executes a content to be processed at present and a content which is obtained from inference information and which is to be processed next. When the processing of the content which is to be processed at present terminates, the command analysis execution part 4 gives information with effect that the processing normally terminates to the host device 1. When this information is given, the host device 1 executes the processing of self information in parallel while the slave device 2 executes the next processing included in the command. Thus, the host device 1 and the slave device 2 can execute the information processing in parallel within waiting time till the termination of the command.

Description

[Detailed Description of the Invention] [Summary] Processes information and issues a command with a fixed command length to lower-level devices to request processing of the information;
Regarding the command processing method, which has a higher-level device that waits for the requested process to complete normally and then sequentially performs the next process, and a lower-level device that processes according to the command issued by the higher-level device, the waiting time can be reduced by simple control. The purpose is to provide a command processing method with high processing speed and high processing efficiency by realizing parallel processing using A speculative information-inclusive command issuing unit is provided that sequentially issues commands that include speculative information representing the next content to be processed as a change from the actual content to be processed, and the commands issued by the issuing unit are analyzed. A speculative information-inclusive command analysis/execution unit is provided that sequentially executes the content to be processed now and the content to be processed next, and notifies the higher-level device of this when the content to be processed currently has been completed. The configuration is as follows.

[Industrial application field]

The present invention relates to a command processing method, in particular, it processes data itself, issues commands to lower-level devices to request processing, waits for the requested processing to complete normally, and then executes the next processing. The present invention relates to a command processing method having a higher-level device that performs processing sequentially and a lower-level device that analyzes and executes commands issued from the higher-level device.

Although the capabilities of individual processors are currently improving, there is a demand for further improvements in the performance of multiprocessor systems. To improve the performance of multiprocessor systems, it is desirable to reduce communication time between processors, which is a disadvantage of multiprocessor systems. Therefore, the present invention is an information processing device that is composed of two processors that perform emotion V processing by mutually exchanging commands, and reduces response/command waiting time that occurs when exchanging commands between processors. The aim is to improve parallel processing efficiency.

[Conventional technology]

Conventionally, as shown in FIG. 6, in addition to performing processing by itself, it also issues commands to lower-level devices 62 to request processing, waits for the requested processing to complete normally, and then starts the next processing in sequence. The host device 61 has a higher-level device 61 that performs processing, and a lower-level device 62 that analyzes and executes commands issued from the higher-level device 61.The higher-level device 61 has a command issuing system that sequentially issues commands that include the contents to be processed. A section 63 is provided, which analyzes the command issued from the command issuing section 63, executes the content to be processed, and when the execution of the content to be processed is completed, notifies the host device 61 to that effect. Command analysis execution unit 64 to notify
It has been established.

Here, it is assumed that the command issuing unit 63 is realized by a processor A and a memory, and the command analysis execution unit 64 is realized by a processor B and a memory.

As shown in the time chart of FIG. 4(a) and the processing flowchart of FIG. 5(a), command 1 is created by the command issuing unit 63 of the host device 61 (■) and sent to the processor B. (■), Processor B analyzes the command 1 (■), performs the access that is the processing content of the command 1 (■), and when the access processing completes normally (■), the processor B Create a response command 1 indicating this.■) Send it to the host device 61 including the processor A (■).

Upon receiving and confirming the notification (■), the higher-level device 61 accesses the external storage device etc. installed in the higher-level device 61, performs the process itself, and when the process is completed, the command issuing unit 63 Command 2 will be created and issued.

In this way, the above steps will be repeated (
■).

[Problem to be solved by the invention]

By the way, as explained above, in a multiprocessor system using the conventional command processing method, the processor A that issued the request command
However, while the other processor is waiting for the request command and the response command as the processing result to be returned from the other processor, other processing cannot be performed, and the processing time during that time may be wasted. It had some problems.

In addition, an interrupt processing method that does not require waiting time by receiving a request/command with an interrupt and performing other processing until the interrupt is received has been considered, but the control is complicated and the storage capacity is particularly small. Information processing devices have had the problem of having to create control programs with a limited number of steps.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a command processing method that achieves parallel processing by utilizing waiting time through simple control, resulting in high processing speed and high processing efficiency.

[Means to solve the problem]

In order to solve the above technical problems, the present invention, as shown in FIG.
A higher-level device 1 issues a command to request a process, waits for the requested process to complete normally, and then sequentially performs the next process, and a lower-level device 2 performs processing according to the command issued by the higher-level device 1. In the command processing system having the following, in addition to the contents to be processed, the host device 1 also includes, if possible, estimated information representing the contents to be processed next based on changes from the contents to be processed currently. In addition to providing a guess information inclusion command issuing unit 3 that sequentially issues the included commands, it analyzes the commands issued from the issuing unit 3, sequentially executes the content to be processed now and the content to be processed next, and When the execution of the content to be processed is completed, a guess information inclusive command analysis/execution unit 4 is provided which notifies the host device 1 to that effect.

[Effect]

The estimated information inclusion command issuing unit 3 provided in the higher-level device 1 issues a command including estimated information, and sends it to the lower-level device 2.

When the command is issued, the estimated information-inclusive command analysis execution unit 4 of the lower-level device 2 analyzes the command and sequentially executes the content to be processed currently and the content to be processed next obtained from the estimated information. do.

Here, the reason why the above-mentioned estimated information is "expressing the content to be processed next by a change from the content to be processed currently" is because the amount of data of the command is fixed, so the amount of information is as small as possible. This is to represent the content to be processed next.

When the processing of the content to be processed is completed, the command analysis execution unit 4 notifies the host device 1 that the processing has been completed normally.

Upon receiving the notification, the higher-level device 1 processes its own information in parallel while the lower-level device 2 executes the next process included in the command, and when the process is completed, the higher-level device 1 executes the command. The issuing unit 3 will issue the next command.

By the way, the "content to be processed" included in the "next command" has already been included in the previous command [
Since the process has ended with the execution of "Content to be processed next," the command analysis execution unit 4 immediately notifies the higher-level device 1 that the process has ended normally, and the lower-level device 2 Upon receiving the notification, the host device 1 executes the "content to be processed next" included in the "next command" and executes the next information processing.

In this way, the higher-level device 1 and the lower-level device 2 execute information processing in parallel within the waiting time until the command ends.

In addition, "content to be processed next" should be "content to be processed next" if possible considering the command length and processing time.
...can also be included.

〔Example〕

Next, examples of the present invention will be described.

FIG. 2 shows a system according to this embodiment.

As shown in the figure, this system consists of a host computer 3
0 and a communication control device (CCP).
on Control Processor) 20
It has the following.

CCP2O has a CA (Channel Adapter) that controls the connection with the host computer 30.
21 and the line control program NCR (Net+
a memory (MSU) 2B that stores data such as volkControl Prog'ram) and data for transmission/reception, and a CCU that reads and executes the NCP from the memory 28 in order to perform various controls of the communication control device 20.
(Central Control Unit) 22
In addition to diagnosing the connection between the communication controller and the line controller, the CMP (Communication Manager) performs processing such as logging error information related to maintenance of the entire communication controller.
nagementProcessor) 10, and assembles and disassembles the data sent through the line into characters and transfers them to the memory 28, and conversely disassembles the characters into bit strings and sends them out to the line. CS (Communication)
onScanner) 23, a keyboard 26, a display unit 25, and an external storage device 24 connected to the CMP 10, and an LIA (Li
neInterface Adapter) 40,
A line control device (LS;
Line 5et) 41.

Furthermore, as shown in the figure, the CMP 10 includes a higher-level device 11 having the processor A and memory, a shared memory 15 used for exchanging data and commands, and a lower-level device 12 having the processor B and memory. However, in addition to the contents to be currently processed, the host device 11 including the processor A includes inferred information representing the contents to be processed next based on changes from the contents to be currently processed, if possible. issue a command to access the shared memory 1.
It has a guess information inclusive command issuing unit 13 held in 5.

Further, the lower device 12 including the processor B analyzes the command issued from the issuing unit 13, sequentially executes the content to be processed now and the content to be processed next, and executes the content to be processed currently. When the process is finished, the speculative information-inclusive command analysis/execution unit 14 issues a response command indicating that the execution of the content to be processed is finished, and causes the command to be stored in the shared memory 15.

Note that a keyboard 26 and a display section 25 are connected to the upper level device 11 including the processor A, and an external storage device 24 is connected to the lower level device 12 including the processor B.

Next, the operation of the command processing method according to this embodiment will be explained.

As shown in the flowchart of FIG. 3(b) and the time chart of FIG. 4(b), from the estimated information inclusive command issuing unit 13 in the higher-level device 11 as a processing request processor to the lower-level device as another information processing device. For 12, request/
Access instructions by commands are sent to the lower-level device 12 via the shared memory 15 (FIG. 3).

Here, the request command is a command that includes estimated information, and has a command format with a fixed command length, as shown in FIG. 3(a).
The command includes at least which storage device (for example, M
access target data indicating whether the access is to SU28 or external storage device 24, etc.), access address data indicating which address of the access target, and whether to read or write to the address. It includes data indicating the operation content, data indicating the access length, a data pointer indicating the address of the shared memory 10 to which data should be written, and a guess information flag.

To specifically explain the request/command, the third
As shown in FIGS. (b) and (f), the access target is, for example, the memory 2, which is always accessed first.
8 is “old”, external register is 11 Q 2 II, external storage device 24 (local storage) is “03゛°
shall be. The operation contents are "01" for writing and "02°" for reading.

In addition, if it is possible to infer the content to be processed next, in order to express the content to be processed next with as little amount of information as possible considering the fixed command length, it corresponds to estimated information expressed by changes from the content to be processed currently. Include guess flag. The estimation flag is set, for example, as shown in FIG. from address 0 to 100 (16
200 of shared memory 18
When writing from address 0 (hexadecimal), use Figure 3 (
The value of the guess flag shown in e) is '00010001
" = '11" (hexadecimal), as shown in Figure 3 (f)
The command has the format shown in .

On the other hand, when accessing continuously by changing only the access target, the estimation flag is set to "
ot oo oo ooo” wealth “40”.

In FIG. 3(b), the access target is "03", that is, the external storage device 24, and the access position is "70" (1
(hex), the operation content is "02", meaning reading, and the estimation flag indicates no change.

As shown in FIG. 4(b) and FIG. 5(b), (■) command 1 written in the shared memory 15 and read out by the lower device 12 executes the estimated information command analysis of the lower device 12. The command 14 receives and analyzes the command 1, and among the contents of the command 1, the contents to be processed are executed.

For example, if the command 1 is as shown in FIG. 3(f), the memory 28 is accessed and the read data is written to address 2000 of the shared memory 18 (■).

In this way, when the execution of the content to be processed is completed (■), the command analysis execution unit 14 responds
Create command 1 (■), issue the corresponding response command 1, and store it in the shared memory 15 (■).

The command analysis execution unit 14 that issued the response command 1 starts executing the "next processing content" indicated by the guess flag included in the request command 1, and also starts executing the "content to be processed next" as shown in FIG. As shown in the time chart of b) and the flow chart of FIG. 5(b), in parallel,
The host device 11 that received the response command l
Processor A analyzes the response command 1 and processes the data by itself as shown in FIG. 4(b) (■). An example of the format of the response command is shown in Figure 3 (C), and a specific example is shown in Figure 3 (d).
is shown.

At that time, the command analysis execution unit 14, for example,
The guess flag “11'' (hexadecimal) as shown in figure (f)
= In the case of "'00010n 01", the access target is the same as the current access target, but the access position is increased by "current address + current access length". Become. Note that even if the processing related to the estimated information is completed, the response command as described above is not issued.

On the other hand, when the processor A of the higher-level device 11 that has received the response command completes the processing that should be performed by itself, the processor B of the lower-level device 12, as shown in FIGS. 4(b) and 5(b), A request command 2 to be processed next is created and issued.

Here, the "content to be currently processed" included in the request command is the content represented by the estimation flag included in the previous request command 1 described above.

As described above, the processor A of the higher-level device 11 issues request command 2 and writes it to the shared memory 15 (O)), and the processor B of the lower-level device 12 issues the request command 2 and writes it to the shared memory 15 (O)).
reads the request command 2 from the shared memory 15 and analyzes it (0). In that case, the request
The "content to be processed now" contained in command 2 has already been processed as the "content to be processed next" represented by the guess flag contained in lift command 1, so it is not processed immediately. The command analysis execution unit 1
4 creates response command 2 (0) and sends response command 2 to processor A of host device 11.
will be issued (o).

The processor A that has received the response command 2 analyzes the content and performs a predetermined process, and as shown in FIG. Request command 2
The data will be processed according to the guess flag included in the . The processing continues in the same manner.

As explained above, in the command processing method according to the present embodiment, each request/command includes a guess flag as guess information indicating the content to be processed next, and the content to be currently processed is When the processing is completed, a response command is issued to Processor A of the higher-level device that requested the processing, so Processor A of the higher-level device and Processor B of the lower-level device do not operate until each other's processing is completed. Because the process can be performed in parallel instead of starting from the beginning, it is possible to perform high-speed processing with high work efficiency.

〔Effect of the invention〕

As explained above, in the present invention, in addition to the content to be actually processed, the host device is provided with estimated information that indicates the content to be processed next based on the difference from the content to be processed, if it is possible to infer the content to be processed next. In addition to providing a guess information-inclusive command issuing unit that sequentially issues commands containing information, it analyzes the commands issued from the issuing unit, sequentially executes the content to be processed now and the content to be processed next, and executes the content to be processed currently. When the execution of the content to be executed is completed, a guess information inclusive command analysis/execution unit is provided which notifies the higher-level device to that effect.

Therefore, while the lower-level device performs other processing after processing the current content to be processed, the lower-level device can perform the next content to be processed in parallel based on the estimated information. This makes it possible to improve processing speed and processing efficiency.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the principle of the present invention, Fig. 2 is a block diagram of an embodiment, Fig. 3 is a diagram showing an example of a command format in the embodiment, and Fig. 4 is a timing diagram of the conventional example and the embodiment. FIG. 5 is a process flowchart according to a conventional example and an embodiment, and FIG. 6 is a block diagram according to a conventional example. 1.11... Upper device 2.12... Lower device

Claims (1)

[Claims] While processing information, issuing a command with a fixed command length to the lower-level device (2) to request processing of the information, waiting for the requested processing to complete normally, In a command processing method that includes a higher-level device (1) that sequentially performs the following processes, and a lower-level device (2) that performs processing according to commands issued from the higher-level device (1), the higher-level device (1) currently has a In addition to the content to be processed, if it is possible to predict the content to be processed next, a guess information-inclusive command issuing unit (3 )
At the same time, it analyzes the command issued from the issuing unit (3), sequentially executes the content to be processed currently and (at least) the content to be processed next, and when the execution of the content to be processed currently is completed. In this case, the host device (1)
A command processing method characterized by comprising a command analysis execution unit (4) including inferred information that notifies the inferred information included command.