JPH0721766B2 - FORTRAN I / O control processor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is specified by using a DD statement without modifying a FORTRAN I / O control processor, particularly a program described by using a FORTRAN I / O statement. FORTRAN for high-speed processing by assuming a predetermined virtual file area (called an in-core file area in the embodiment) in the virtual memory space as a data set and directly transferring data to and from the virtual file area. The present invention relates to an input / output control processing device.

[Problems to be solved by conventional technology and invention]

Conventionally, the input / output control using the FORTRAN input / output statement is performed by analyzing the FORTRAN input / output statement as shown in FIG. In the process, the input / output sentence is analyzed and, for example, the external file 1 is accessed (read or
In the case of writing), the illustrated data management unit 4 etc., which is one of the functions of the OS, sequentially performs the illustrated processing or
After transferring predetermined data from the data area 3 in the main memory to the buffer area 2 as shown on the right end, after writing to the external file 1 or transferring the data read from the external file 1 to the buffer area 2. , Data area 3 was being written.

For this reason, when using a program that uses FORTRAN I / O statements, for example, when performing complex scientific and technological operations, it may be desirable to temporarily store the intermediate results of calculations in an area that can be accessed at high speed. However, as described above, the input / output processing must be performed one by one, the overhead required for the input / output processing becomes large, and it is difficult to perform the arithmetic processing at high speed. On the other hand, rewriting a program using FORTRAN I / O statements that have already been created without the FORTRAN I / O statement has a problem that it takes an extremely long time.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention uses a virtual file area secured by designating it by using a DD statement as a data set without modifying the FORTRAN input / output statement, and High-speed arithmetic processing is executed by directly transferring data to and from a predetermined data area.

Therefore, the FORTRAN I / O control processor of the present invention is
FORTRAN that performs data input / output processing using RAN input / output statements
In the input / output control processing device, declaring means for declaring a virtual file area for storing data in the virtual storage space, information about the virtual file area declared by the declaring means, and execution of the FORTRAN input / output statement Interface means for notifying information about the stored virtual file area in response to a macro command for instructing the start of processing using the virtual file area issued by the routine in Data transfer control means for transferring data between a predetermined virtual file area and a data area in the virtual storage space based on information about the virtual file area,
The FORTRAN input / output statement is directly transmitted by the data transfer control means in the form of data transfer processing between the data area and the virtual file area under the operating condition of the FORTRAN system without intervention of the input / output processing function of S. It is characterized by processing.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings. In this embodiment, the virtual file area is made available along with the vectorization processing, and the virtual file area is secured by issuing the VPINIT macro instruction instructing the start of the vectorization processing. In this embodiment, the virtual file area is called the incore file area.

FIG. 1 is an operation explanatory view for explaining the operation of the configuration of one embodiment of the present invention, FIG. 2 is a configuration diagram of one embodiment of the present invention, and FIGS. 3 to 6 are shown in FIG. The operation | movement explanatory drawing explaining operation | movement of an Example structure is shown.

1 to 6, 1 is an external file, 2 is a buffer area, 3 is a data area, 4 is a data management unit, 5 is an in-core file area which is a virtual file area of the present invention, and 6 is a main storage area. Virtual memory space configured by extension area, 7-1 and 7-2 are VPDS in the region of the control table showing in-core file information, 8 is FORTRAN I / O control processor, 9 is declarative means, 10
Is interface means, 11 is in-core file information, and 12 is data transfer control means.

In FIG. 1, an in-core file area 5 related to the virtual file area of the present invention is provided as a temporary storage area in the virtual storage space 6 in the figure by defining it as described later. The in-core file area 5 can be arranged in either the main storage area or the extension area. When the program using the FORTRAN I / O statement is executed, instead of the input / output processing mediated by the OS data management unit 4 as shown in FIG. Data transfer is directly performed by the illustrated in-core file input / output processing with the data area 3, that is, the data transfer processing between the storage areas.
Therefore, for example, by temporarily storing the intermediate result generated by the scientific and technological calculation in the in-core file area 5, the calculation process can be executed at high speed. The configuration and operation of the present invention will be sequentially described in detail below.

In FIG. 2, the upper part of the broken line shows the conventional structure for performing FORTRAN input / output processing, and the lower part of the broken line shows the structure of the embodiment for performing in-core file input / output processing according to the present invention. In particular, in the present embodiment, both the data area 3 and the in-core file area 5 in the figure are provided in the main memory area. Therefore, unlike the embodiment described later with reference to FIG. 4, it is not necessary to perform page switching or the like which is required when the in-core file area 5 is provided in the extension area, and in-core file input / output processing is performed at extremely high speed. It is configured to be able to.

In FIG. 2, when a FORTRAN program (not shown) is input and, as a result of analysis, data transfer using the in-core file area is defined by the DD statement format declaring means 9, the interface means 10 is declaring means. Information related to the in-core file area 5 specified by
Stored as in-core file information 11.

Next, when the input / output statement in the FORTRAN program is executed and the runtime routine issues a VPINIT macro instruction (vectorization processing start instruction) for instructing the start of execution of vectorization processing, which will be described later with reference to FIG. 6, the interface means In response to this, 10 reads the in-core file information 11 and notifies the data transfer control means 12 of it. This VPINIT macro instruction will be used for any vector instruction and in-core file area 5 thereafter.
Tells the system that and are to be used.

The data transfer control means 12 controls the transfer of data between the in-core file area determined based on the in-core file information 11 notified from the interface means 10 and the data area defined by the input / output statement of the FORTRAN program.

FIG. 3 shows an example of a DD statement for declaring the incore file area 5. By executing the declaration statement as shown,
For example, as shown in FIG. 2, the illustrated in-core file area 5 can be reserved (reserved) in the main storage area.

In the figure, ddn describes the name of the DD statement.

In the figure, SPACE describes the amount of space in the in-core file area 5. In the figure, sk indicates the amount of space in K bytes (1
024 bytes) unit, s [M] in the figure
Describes the amount of space in units of M bytes (1024 Kbytes). By describing the space amount, for example, the size of the in-core file area 5 secured in the main storage area shown in FIG. 2 is determined.

In the figure, dsn is written when the name of the in-core file area is required. In the figure, dcb is described when DCB information is required.

By executing the declaration statement (DD statement) as described above, for example, an in-core file area 5 of a predetermined size can be secured in the main storage area shown in FIG.

FIG. 4 is a block diagram for explaining an embodiment of the in-core file input / output processing of the present invention. In the case of this embodiment,
The in-core file area is arranged in the expanded area of the virtual memory space.

The figure shows the block that analyzes the FORTRAN I / O statement. The analysis processing means that the content necessary for input / output processing of the incore file is interpreted using the incore file area 5. As a result of the interpretation, blocks and blocks are executed when performing in-core file input / output processing.

In the figure, it is a block for analyzing the input / output data items. This is the VP issued by the run-time routine.
Analyzes the contents (such as the size of the incore file area 5) declared for the FORTRAN I / O statement using the above-mentioned DD statement in a form corresponding to the INIT macro instruction, and starts the size or start of the incore file area. This means notifying the VPINIT macro instruction issuer of information such as an address.

In the figure, as indicated by the arrow on the right side, this block directly performs data transfer processing (in-core file input / output processing) between the in-core file area 5 and the data area 3. The data transfer is directly carried out between each other using a vector command or a transfer command.

FIG. 5 is an operation explanatory view illustrating an operation of the embodiment in which in-core file information necessary for performing in-core file input / output processing is set.

In the figure, the in-core file areas 1 to n in the virtual storage space 6 are secured by executing the above-mentioned DD statement. Each incore file area 1 to n is defined by one different incore file information.

In the figure, VPDS7-1 in the region is a control table showing incore file information corresponding to a certain incore file region, and is stored at a predetermined address in the region (region) where the user program is loaded and executed. There is. Similarly, the in-region VPDS 7-2 shows a control table of in-core file information corresponding to another in-core file area. As described above, the start addresses of these control tables are returned from the interface not shown in the form corresponding to the VPINIT macro instruction issued by the runtime routine of the FORTRAN I / O statement to the interface not shown. It is a thing. First regional VPDS
7-1 contains the VPDS 7-2 within the next region shown in the figure.
The incore file information such as the pointer indicating the, the DD name, the start address of the incore file area 5 and the length of the incore file area 5 is stored. Based on these in-core file information, in-core file input / output processing (data transfer processing) is directly executed between the predetermined in-core file areas 1 to n in the virtual storage space 6 and the data area 3. At this time, the OS (operation system) does nothing regarding the data transfer between the in-core file area 5 and the data area 3. Data transfers are handled directly using transfer or vector instructions.

In the figure, VPDS7-2 in the region is VPDS7 in the region
The in-core file information to be executed next designated by the illustrated pointer in -1 is stored. In this way, a plurality of in-core file areas 1 to n are sequentially designated, and data is transferred directly to and from the data area 3 as needed.

FIG. 6 shows a description example of the VPINIT macro instruction.

In the figure, the operation "VPINIT" means to notify the system that the task issuing the VPINIT macro instruction will use the VP instruction and the in-core file area 5 thereafter. Therefore, after issuing the macro instruction, the VP instruction and the in-core file area 5 can be used freely until the task ends. Then, as described with reference to FIG. 5, the address in which the intra-region VPDS 7-1 is stored is stored in the register (1) not shown and returned to the runtime routine that issued the VPINIT macro instruction.

〔The invention's effect〕

As described above, according to the present invention, the incore file area secured by the specification using the DD statement is regarded as a data set without modifying the FORTRAN input / output statement, and the OS
Since the data transfer processing (in-core file input / output processing) is performed directly between the in-core file area and the data area without the intervention of the above, high-speed input / output processing is possible within the closed range under the operating condition of the FORTRAN system. It will be possible.

That is, according to the present invention, since a file storage area specified by the user is secured in a part of the main memory and can be used, no change is required at the application program level, and input / output of a normal program is not required. It is possible to easily increase the speed up to several thousand times.

[Brief description of drawings]

FIG. 1 is an operation explanatory view for explaining the operation of the configuration of one embodiment of the present invention, FIG. 2 is a configuration diagram of one embodiment of the present invention, and FIGS. 3 to 6 are shown in FIG. FIG. 7 is an operation explanatory diagram for explaining the operation of the example configuration, and FIG. 7 is an operation explanatory diagram for explaining the operation of the conventional FORTRAN input / output control processing method. In the figure, 1 is an external file, 2 is a buffer area, 3 is a data area, 4 is a data management unit, 5 is an in-core file area, 6 is a virtual memory space, 7-1 and 7-2 are VPDS in the region, and 8 is FORTRAN input / output control processor, 9 is declarative means, 10 is interface means, 11 is in-core file information, and 12 is data transfer control means.

Front Page Continuation (56) References JP-A-58-105361 (JP, A) Nikkei Electronics, April 11, 1983, Nikkei McGraw-Hill, P. 159-184

Claims (1)

[Claims] 1. In a FORTRAN input / output control processing device for inputting / outputting data using FORTRAN input / output statements, declaring means for declaring a virtual file area for storing data in a virtual storage space, and declaring means It stores the information about the declared virtual file area and the FORT
Interface means for notifying information about the stored virtual file area in response to a macro command for instructing the start of processing using the virtual file area issued by the routine executing the RAN I / O statement, and the interface An input / output processing function of the OS, comprising a data transfer control means for transferring data between a predetermined virtual file area and the data area in the virtual storage space based on the information about the virtual file area notified from the means. FO without intervention
FORTRAN input / output control, wherein FORTRAN input / output statements are directly processed by the data transfer control means in a mode of data transfer processing between the data area and the virtual file area under the operating condition of the RTRAN system. Processing equipment.