JPS636893B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inter-computer data transfer method that connects a plurality of electronic computers and transfers data.

A channel coupling method is generally used for such inter-computer data transfer method. A channel is a device that controls input/output devices in response to instructions from a central processing unit, and the channel coupling method is a method of directly coupling these channels to transmit information between electronic computers.

With such a channel combination method, high-speed processing has not been possible due to the following problems.

(1) One time of information transmission generates two interrupts in each of the sending and receiving computers, so the overhead of interrupt processing is large.

(2) Treat the other party's computer as one input/output device,
Since transmission and reception are performed according to standard input/output procedures, overhead is large.

An object of the present invention is to provide an inter-computer data transfer method that allows data transfer between computers at high speed.

In order to achieve such an object, the present invention includes a control means for controlling data transfer and a switch means, and a transmitting side computer and a receiving side computer are connected through the switch means based on the control of the control means, The feature is that data from the main memory of the sending computer is transferred to the main storage of the receiving computer.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an apparatus for realizing an inter-computer data transfer system according to the present invention.

In the figure, 1 is a computer coupling device for controlling data transfer, 2 is a switch matrix, and 3 and 4 are electronic computers. In electronic computer 3, 31
32 is an arithmetic control device, 32 is a storage control device, and 33 is a main storage device. In the electronic computer 4, 41 is an arithmetic control device, 42 is a storage control device, and 43 is a main storage device.

In this example, a computer is used on both the sending and receiving sides.
Although the case of a stand is shown, it goes without saying that the present invention is not limited thereto.

In FIG. 1, consider the case where computer 3 acts as a sending computer and then transmits information to computer 4 on the receiving side.

The sending computer 3 prepares control information indicating a transmission request and information to be sent in the main storage device 33 in preparation for transmission, and the receiving computer 4 prepares control information indicating a reception request in preparation for reception. Prepared in the main storage device 43.

Next, the processing in the computer coupling device 1 will be described.

First, the switch matrix 2 is switched, the storage control device 32 of the computer 3 is connected, a read signal is sent to the storage control device 32, and control information is read from the main storage device 33. The receiving computer 4 is identified from the control information thus read out, and the switch matrix 2 is switched in order to connect the corresponding storage control device 42.

Next, the storage control device 42 of the sending computer 4
The control information is read from the main storage device 43 by sending a read signal to the main storage device 43 . In this way, the address where the information to be transferred and the amount of information to be transferred are identified from the control information read from the main storage devices 33 and 43 of both computers 3 and 4, and the transferred information is transferred to the computer 3 on the sending side. It is read from the main storage device 33 and written to the main storage device 43 of the computer 4 on the receiving side.

When the information transfer is completed, control information indicating completion of transmission is written into the main storage device 33 on the sending side, and control information indicating completion of reception is written into the main storage device 43 on the receiving side. Then, in order to process the information received by the receiving computer 4, the task specified by the control information read from the main storage device 43 is made ready for activation, as described above.

FIG. 2 shows an example of a specific configuration of the computer coupling device 1 and switch 2 shown in FIG.

In the computer coupling device 1, 11 is a general-purpose arithmetic unit, 12 is a memory, 13 is a data counter, and 14
-3 and 14-4 are switch controls for controlling the switch matrix 2 connected to the sending and receiving computers 3 and 4, respectively; 15-
3 and 15-4 are transmitting and receiving side control information buffers, respectively; 16-3 and 16-4 are transmitting and receiving side address buffers, respectively;
7-3 and 17-4 are transmitting side and receiving side data buffers, respectively.

In addition, in switch matrix 2, SW
1 to SW12 indicate switches.

The data transfer procedure will be explained in detail below with reference to the drawings.

In the computer coupling device 1, switches SW1, 2, 3, 4, 5, 6 are connected to the switch control 14-3 in order to connect to the storage control device 32 that sends data.
Set the bit to turn on.

Further, in order to connect to the storage control device 42 that receives data, a bit is set in the switch control 14-4 to turn on the switches SW7, 8, 9, 10, 11, and 12.

This allows data to be transferred in any direction. Also, by increasing the number of switch SWs, three or more computers can be connected.

Next, a procedure for reading information from the main storage device 33 of the sending computer 3 will be explained.

The address ADDR of the data to be read from the main storage device 33 is set in the sending side address buffer 16-3, and then the sending side control information buffer 15-3 is set.
The read request bit RREQ is set to 3 and these signals are sent to the storage controller 32.

The storage control device 32 has an address buffer 16-
When address 3 ADDR is taken in, response signal RESP is generated.
return it. This response signal sets the corresponding bit of the transmitting side control information buffer 15-3 and resets the bit of the read request.

The storage control device 32 sends an advance signal ADV to read the data read from the main storage device 33.
Set DATA to the sending data buffer 17-3.

Furthermore, a procedure for writing information to the main storage device 43 of the receiving computer 4 will be explained.

The general purpose arithmetic unit 11 of the computer coupling device 1 sets data in the receiving side data buffer 17-4. Next, the address of the data to be written to the main storage device 43 is stored in the receiving side address buffer 16-4.
ADDR is set, and then the write request bit WREQ is set in the receiving side control information buffer 15-4, and these signals are sent to the storage control device 43. When the storage control device 43 takes in the data DATA and address ADDR, it returns a response signal RESP.
This response signal is sent to the receiving side control information buffer 15-
4 and resets the write request bit.

As can be seen from the embodiments described above, the following effects can be obtained according to the present invention.

(1) Data transfer is performed by the computer coupling device independently of each computer, so there is no need for interrupt processing for the purpose of synchronizing data transfer in the transmitting and receiving computers.

(2) After the data transfer is completed, the sending and receiving computers do not need to perform communication completion processing.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of a device for realizing an inter-computer data transfer system according to the present invention, and FIG. 2 is a block diagram of an example of the specific structure of FIG. 1... Computer coupling device, 2... Switch, 3,
4...Electronic computer, 33,43...Main storage device.

Claims (1)

[Claims] 1 A device for transferring data for a plurality of computers each having a storage control device, the device comprising: a control means for controlling data transfer; and a switch between each of the storage devices of the plurality of computers and the control means. a switch means having a control line and a data line coupled to each other via a general-purpose arithmetic unit; a transmitting/receiving control information buffer and a transmitting/receiving address buffer for taking in the transmitting/receiving control information and address of the computer to which the data is to be transferred, through which the data is transferred from the storage device of the transmitting computer to which the data is to be transferred; A data transfer method between computers, characterized in that the data is transferred to a storage device of a receiving computer via the switch means and the control means.