JPH0139141B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an inter-processor communication system between multiple processors in an information processing system, and in particular, to
This relates to communication route selection during inter-processor communication.

Conventional technology Conventionally, this type of inter-processor communication system required an inter-processor communication control device for each processor to control inter-processor communication, and the communication route to the communication destination was determined by the communication control device. .

Furthermore, in order to configure a plurality of communication paths, a plurality of interprocessor communication control devices are connected to each processor to form completely independent communication paths.

Therefore, if a failure occurs in the interprocessor communication control device or the communication path, communication may become completely impossible, or communication with a specific processor may become impossible.

Furthermore, when a plurality of communication paths are configured, a large number of interprocessor communication control devices are required, resulting in an expensive device.

OBJECT OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned drawbacks inherent in the conventional technology.Therefore, an object of the present invention is to enable processors to select communication paths even in a small number of inter-processor communication control devices. It is an object of the present invention to provide a new inter-processor communication means which facilitates the use of an alternative communication path in the event of a failure of the communication path and also enables load distribution of the communication path.

Structure of the Invention In order to achieve the above object, the inter-processor communication system according to the present invention provides a processor-to-processor communication method that includes means for assigning a unique processor identifier for each processor indicating a source processor and a receiving processor to a processor-interrogation communication command. , an inter-processor communication control device having a plurality of processor supports to which processors can be connected and capable of selecting one of the processor supports; and a communication control device between the processor and the processor, which allows the processor to freely select one of the processor supports. The device is configured to include a communication path for connecting with the device.

Embodiments of the Invention Next, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the overall configuration of an embodiment according to the present invention. In the figure, one embodiment of the present invention includes a plurality of processors 10, 11, 30, 3
1, and a plurality of inter-processor communication control devices 20, 2
1, 22, and a plurality of processors 10, 11, 3
0, 31 and a plurality of processor communication control devices 2
Communication lines 100 to 105 connecting 0, 21, 22,
It consists of 300-305.

FIG. 2 is a partial block diagram showing the processor 10 of FIG. 1, the interprocessor communication control device 20, the processor 30, and the communication lines 100 and 300 connecting them. In the figure, a processor 10 has an identifier assigning unit 110 that assigns a processor identifier to a command when outputting a communication command, and a configuration table 120 that indicates the connection state between the processor 10 and other processors.
1, 30, and 31 similarly have an identifier assigning section and a configuration table.

The inter-processor communication control device 20 includes ports 200, 201,
202 and 203, a correspondence table storage unit 210 for knowing the correspondence between processor identifiers and ports, and a command buffer 220 for storing commands from each port.

The operation will be explained below using the block diagram constructed in this way.

First, when starting up the system, the processor identifier and the port 200 in the interprocessor communication control device 20 are
The correspondence table showing the correspondence with ~203 is stored in the correspondence table storage unit 2.
10, and the interprocessor communication control device 21
and 22 are also stored in the same way.

After completing the above preparations, if it becomes necessary for the processor 10 to send communication information to the processor 30, the processor 10 sends the communication information to the communication destination processor 30.
Create a communication command with an identifier added (id30 for now), select one communication line 100 from the plurality of communication lines from the configuration table 120 showing the configuration of the plurality of processors, and output the communication command. do. At this time, the identifier assigning unit 110 adds the identifier of the processor 10 to the communication command.
id10).

When the communication command is transferred to the inter-processor communication control device 20, the inter-processor communication control device 20 refers to the correspondence table storage unit 210 using the identifier (id30) of the communication destination processor 30 in the communication command,
Port 2 to which the communication destination processor 20 is connected
Obtain and output 02. At this time, if the port 202 is busy, the communication command is stored in the command buffer 220 and waits for the port 202 to be released from the busy state. In addition, if output cannot be performed due to a failure etc., the communication source processor
Perform processing to return the failure status to 10.

Communication commands from port 202 are sent to processor 30.
When the communication command is transferred, the processor 30 performs the operation instructed by the communication command, and creates a communication command with an identifier (id10) indicating the communication source processor 10 added in order to return the processing result to the communication source processor 10. , selects one communication line 100 from among the plurality of communication lines from a configuration table 320 showing the configuration of a plurality of processors, and outputs the communication command.
At this time, the identifier adding section 310 adds the identifier (id30) of the processor 30 to the communication command. Thereafter, the communication command is transferred to the processor 10 by performing the same process as explained above.

Also, by referring to the configuration table 120, the processor 10 can connect the communication lines 100 to 102 in FIG.
No matter which communication route you choose, the target processor30
Since it is possible to know that communication commands can be transferred to the network, it is easy to select an alternative communication route in the event of a failure or to select a communication route for purposes such as load balancing.

Furthermore, it can be seen that the communication path when transmitting a communication command and the communication path indicating the processing result may be different.

Effects of the Invention As explained above, the present invention has an inter-processor communication system in which a communication path can be selected by the processor. This has the effect of allowing you to freely choose your route.

[Brief explanation of drawings]

FIG. 1 is an overall block configuration diagram showing one embodiment of the present invention, and FIG. 2 is a portion showing the processors 10 and 30 shown in FIG. 1, the interprocessor communication control device 20, and the communication paths 100 and 300 connecting them. It is a block diagram. 10, 11, 30, 31...Processor, 20, 2
1, 22...Interprocessor communication control device, 100 to 10
5,300-305...Communication line, 110,310...Identifier assigning unit, 120,320...Configuration table, 200-
203... Port, 210... Correspondence table storage unit, 220...
Command batshua.

Claims (1)

[Claims] 1. In an information processing system that performs inter-processor communications such as data exchange between multiple processors that can be connected to multiple processor-to-processor communication control devices, the processor-to-processor communication command has a unique code for each processor that indicates the source processor and the receiving processor. a processor having a means for assigning a processor identifier; a processor-to-processor communication control device having a plurality of processor supports to which the processor can be connected and capable of selecting one of the processor supports; An inter-processor communication method, comprising: a communication path that connects the processor and the inter-processor communication control device.