JPH07175653A - Parallel computer system - Google Patents

Abstract

PURPOSE:To reduce communication overhead with the input/output of data between respective computers without installing plural communication areas on the main storage device of each computer by providing communication control equipments at the computer and an input/output controller. CONSTITUTION:The input or output request of data held by an input/-output controller 70B under the control of a computer 10B and a control request containing the name of an input/output request source computer, input/output data storage area place and input/output data storage area size are transmitted to the computer 10B by an input/output request source computer 10A to request the input/output of data. The computer 10B indicates control information based on the control request to the input/output controller 70B, and the input/output controller 70B controls the input/output of held data based on the control information, inputs/outputs the data to the input/output request source computer 10A and reports the end of input/output to the computer 10B. Since the computer 10B reports the completion of control to the input/output request source computer 10A based on the report, the data can be directly transferred between the input/output request source computer 10A and the input/output controller 70B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parallel computer system in which a plurality of computers are connected by a communication network and the computers cooperate to execute various processes.

[0002]

2. Description of the Related Art Conventionally, in a parallel computer system in which a plurality of computers are connected by a communication network and the computers cooperate to execute various processes, each computer is controlled by an input / output control under the control of another computer. When inputting / outputting (transferring) data held by the device, input / output (transfer) data to / from the input / output control device is performed via the computer controlling the input / output control device. There is.

However, in the above-mentioned prior art, since data must be input / output to / from the input / output control device via another computer at all times, the operation such as reduction of communication overhead, which is the processing load of each computer, can be performed. There was a desire for improved efficiency.

Therefore, as disclosed in Japanese Patent Laid-Open No. 5-11341 (Title of Invention: "Computer Communication System"), in a parallel computer system, a shared memory shared by computers and a main computer of each computer are disclosed. A plurality of communication areas are provided on the storage device, and data is directly input / output (transferred) between each communication area on the shared memory and the corresponding plurality of communication areas on the main storage device of each computer for communication. Techniques have been developed to reduce overhead.

[0005]

However, in the technique disclosed in the above-mentioned Japanese Patent Laid-Open No. 5-11341,
Although the communication overhead of each computer is reduced, there is a problem that a plurality of communication areas corresponding to other computers and shared memory must be provided on the main storage device of each computer.

An object of the present invention is to provide a parallel computer system capable of reducing the communication overhead associated with the input / output of data between computers without providing a plurality of communication areas on the main memory of each computer. To do.

[0007]

In order to achieve the above-mentioned object, the present invention provides data communication with an input / output control device which connects a plurality of computers with a communication network and controls the input / output of data of each computer. In a parallel computer system that executes various types of processing in cooperation with a plurality of computers while executing the input / output of each of the plurality of computers, an input / output request source computer that requests data input / output is a control of another computer among the plurality of computers. The input or output request of the data held by the underlying I / O control device, the name of the I / O request source computer, the I / O data storage area location, and the control request including the I / O data storage area size The other computer is provided with transmitting means, and the other computer is configured to instruct the input / output control device of control information based on a control request from the input / output requesting computer, and the input / output device. A communication means for communicating the control completion of the control device to the input / output request source computer, wherein the input / output control device controls the input / output of the data held based on the control information; An input / output unit for inputting / outputting input / output data to / from the input / output requesting computer; and a notifying unit for notifying the other computer of the end of input / output of this data to / from the input / output requesting computer. is there.

[0008]

According to the means, among the plurality of computers,
The input / output request source computer that requests data input / output holds the data input / output request held by the input / output control device under the control of another computer, the input / output request source computer name, and the input / output data storage A control request including the area location and the size of the input / output data storage area is transmitted to another computer, and the other computer instructs the input / output control device to carry out control information based on the control request. The control device controls input / output of the data held based on the control information, inputs / outputs this input / output data to / from the input / output request source computer, and inputs / outputs this data to the input / output request source computer. Is notified to the other computer, and based on this notification, the other computer notifies the I / O request source computer of the completion of control of the I / O control device. It is possible to directly input / output (transfer) data between the I / O request source computer and the I / O control device without providing multiple communication areas on the device. The communication overhead involved can be reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a system configuration diagram showing the configuration of an embodiment of a parallel computer system to which the present invention is applied.

In FIG. 1, 10A and 10B are computers,
20A and 20B are central processing units (CPU), 30
A and 30B are main memory control unit (MCU), 40A,
40B is a communication control device, 50A and 50B are main storage devices,
60A and 60B are input / output data storage areas, and 70A and 70
B is an input / output control device, 80A and 80B are input / output devices, 9
Reference numerals 0A and 90B are communication control devices in the input / output control devices 70A and 70B, and 100 is a communication network.

As shown in FIG. 1, for example, a computer 10A
Is a central processing unit (CPU) 20A that executes instructions
And a main storage device 50A and a main storage device control unit (MCU) for controlling access to data in the main storage device 50A
30A and a communication control device 40A that controls communication using the communication network 100.

The computer 10B has the same configuration.

The computers 10A and 10B are connected to the communication network 100 via the communication control devices 40A and 40B in the computers. Also, calculator 1
An input / output control device 70 having control authority for 0A and 10B
A and 70B are connected to each other.

Each input / output control device 70A, 70B
Is connected to input / output devices 80A and 80B to be controlled, and communication control devices 90A and 90B for performing communication via the communication network 100 are provided.

Here, each input / output control device 70A, 70B
Is an input / output data storage area 60 on each main storage device 50B, 50A in the computer 10B, 10A via the communication network 100 through each communication control device 90A, 90B.
Data is directly input / output (transferred) to / from B and 60A.

Here, in order to facilitate the explanation, 10
Although only two computers A and 10B are shown in the figure, any number of these computers may be provided in this embodiment.

FIG. 2 is an internal configuration diagram showing the internal configuration of the input / output control device of the embodiment.

In FIG. 2, 70A and 70B are input / output control devices, 90A and 90B are communication control devices, and 110.
A and 110B are interface units (I / F units) for transmitting and receiving control information to and from the computers 10A and 10B, 120A and 1
Reference numeral 20B is a control device for controlling the input / output of data from the input / output devices 80A and 80B.

Next, the operation of the parallel computer system of this embodiment will be described.

FIG. 3 is a flow chart showing an operation processing procedure in the parallel computer system of the embodiment.

1 to 3, for example, the computer 10
When a data input / output request is issued to the input / output control device 70B in A (1000), the computer 10A requests the data input or output to the input / output control device 70B, the input / output request source computer name (here, computer). 10
A) and the control request including the area address and area size of the input / output data storage area 60A on the main storage device 50A of the computer 10A, the input / output control device 70B is controlled via the communication network 100 through the communication control device 40A. To the computer 10B that is running (110
0).

The computer 10B is a communication network 100.
The control request for the input / output control device 70B sent from the computer 10A is received through the communication control device 40B via the computer (2000).

The computer 10B gives an instruction to the input / output control unit 70B for control information based on this control request (2
100).

The input / output control unit 70B receives the control information from the computer 10B in the I / F unit 110B (300
0), according to the control information, input / output data from the input / output device 80B via the control device 120B, and via the communication network 100 via the communication control device 90B, input / output data on the main storage device 50A of the input / output request source computer 10A. Input / output of data is started directly with the storage area 60A (3100).

In the computer 10A, the input / output control device 70B
Input / output of the data is directly input / output to / from the input / output data storage area 60A on the main storage device 50A through the communication control device 40A via the communication network 100 (120).
0).

When the input / output processing is completed, the input / output control device 70B sends an input / output processing completion notice to the computer 10B (3200).

When the computer 10B receives the input / output processing completion notice from the input / output control device 70B, it notifies the computer 10A of the control completion notice via the communication control device 40B via the communication network 100 (2200).

The computer 10A is a communication network 100.
When the control completion notification is received from the computer 10B via the communication control device 40A via the computer (1300), the data input / output processing is terminated (1400). This completes a series of data input / output processing.

As can be seen from the above description, according to the present embodiment, the input / output request source computer 10A, which requests data input / output, among the plurality of computers 10A, 10B is controlled by another computer 10B. It includes an input or output request for data held by a certain input / output control device 70B, the input / output request source computer name (here, 10A), an input / output data storage area location, and its input / output data storage area size. The control request is transmitted to the other computer 10B, and the other computer 10B instructs the input / output control device 70B to send control information based on the control request to the input / output control device 70B.
Controls the input / output of the held data based on the control information, inputs / outputs the input / output data to / from the input / output request source computer 10A, and inputs / outputs this data to the input / output request source computer 10A. Completion of input / output of the other computer 10
B to the other computer 10B based on this notification.
Informs the I / O request source computer 10A of the control completion of the I / O control device 70B. Therefore, data input / output (transfer) is directly performed between the I / O request source computer 10A and the I / O control device 70B. It can be performed.

As a result, the communication overhead associated with the input / output of data between the computers can be reduced.

[0032]

As described above, according to the present invention, the communication overhead associated with the input / output of data between computers is reduced without providing a plurality of communication areas on the main storage device of each computer. be able to.

Further, even if a large amount of data is input / output (transferred) directly between each computer and each input / output control device, there is an effect that the operating efficiency of the parallel computer system is improved.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of an embodiment of a parallel computer system to which the present invention is applied.

FIG. 2 is an internal configuration diagram showing an internal configuration of an input / output control device of the embodiment.

FIG. 3 is a flowchart showing an operation processing procedure of the parallel computer system of the embodiment.

[Explanation of symbols]

10A, 10B ... Computer, 20A, 20B ... Central processing unit (CPU), 30A, 30B ... Main storage unit control unit (MCU), 40A, 40B ... Communication control unit, 50
A, 50B ... Main storage device, 60A, 60B ... Input / output data storage area, 70A, 70B ... Input / output control device, 80
A, 80B ... I / O device, 90A, 90B ... Communication control device in I / O control device, 100 ... Communication network, 1
10A, 110B ... Interface part (I / F part),
120A, 120B ... Control device.

Claims (1)

[Claims] 1. Various computers are connected in cooperation with a plurality of computers while executing data input / output with an input / output control device that connects a plurality of computers with a communication network and controls the data input / output of each computer. In a parallel computer system that executes processing, among the plurality of computers, an input / output request source computer that requests input / output of data is an input of data held by an input / output control device under the control of another computer. Or output request,
The input / output request source computer name, the input / output data storage area location, and transmission means for transmitting a control request including the input / output data storage area size to the other computer, and the other computer is the input / output request The input / output unit is provided with an instruction unit for instructing the input / output control unit control information based on a control request from the source computer, and a communication unit for notifying the input / output control unit of the control completion of the input / output control unit. The control device controls the input / output of the data held on the basis of the control information, the input / output means for inputting / outputting the input / output data to / from the input / output request source computer, and the data before this data. A parallel computer system, comprising: a notification means for notifying the other computer of the end of input / output to the entry output requesting computer.