JPH1021214A - Simulation executing device and its data compressing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the retrieval of simulation result data by dividing the simulation result data by optional simulation times and including information reflecting the simulation times in a file name. SOLUTION: A dividing point setting part 40 sets simulation times to be dividing points in the case of dividing simulation result data. Concerning simulation result data sent to an outputting form deciding part 30, a data dividing part 31 reads the simulation time designated by the dividing point setting part 40 and sets simulation times for dividing simulation result data so as to generate an internal file. Then the part 31 transfers the internal file storing to simulation result data to a data compressing part 32. A conversion objective key to conversion key replacing part in the part 32 detects a conversion objective key from simulation result data in the internal file to replace it with a conversion key.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simulation execution apparatus for executing a simulation using a computer, and more particularly to a simulation execution apparatus characterized by a method of compressing simulation result data and a data compression method thereof.

[0002]

2. Description of the Related Art FIG. 7 shows a configuration of a conventional simulation execution apparatus. As illustrated, the simulation execution device 100 includes a simulation execution unit 110 that executes a simulation, and a compression unit 120 that compresses simulation result data, and is connected to an external storage device via an input / output interface 200.

[0003] The simulation execution device handles an enormous amount of simulation result data obtained as a result of a detailed simulation. When storing the simulation result data in an external storage device, the data amount is enormous, and if stored as it is, the external storage device requires a large storage capacity and is inefficient. Therefore, data is appropriately divided, or data is compressed using various compression algorithms and stored in an external storage device. In the conventional simulation execution apparatus, when dividing the simulation result data, it is general to divide the simulation result data into predetermined sizes regardless of the contents of the data.

[0004]

As a first problem, the above-mentioned conventional simulation execution device has a problem that the efficiency is low when the simulation result data is handled or stored in an external storage device. . The reason is that the simulation result data has an enormous data amount, and if it is handled as it is, the load on the CPU of the simulation execution device and the external storage device is too large.

[0005] As a second problem, when the simulation result data is divided or compressed, information necessary for breaking a situation in a specific time zone is searched from a vast amount of simulation result data. However, there is a problem that it is difficult to break the sheet. The reason is that when dividing the simulation result data, the data is not mechanically divided for each predetermined size without considering the contents of the data, and the contents of the simulation result data cannot be viewed in a compressed state. .

The present invention performs compression suitable for the contents of simulation result data, makes it possible to easily find a part to be analyzed from a large amount of simulation result data, and obtains statistical data for the whole. It is an object of the present invention to provide a simulation execution device that enables processing and a data compression method thereof.

[0007]

A simulation execution apparatus according to the present invention that achieves the above object has division point setting means for setting a division point based on a simulation time for simulation result data, and setting by the division point setting means. A dividing unit that divides the simulation result data according to the divided points, and replaces specific data that frequently appears in the simulation result data with a small-sized conversion key for the simulation result data divided by the dividing unit. And a compression unit for performing compression.

According to a second aspect of the present invention, in the simulation execution apparatus according to the present invention, the dividing means attaches a file name reflecting the division point to the file of the divided simulation result data.

In the simulation execution apparatus according to the present invention, the compression means creates a conversion table indicating a correspondence between the frequently-appearing data to be compressed and the conversion key, and performs a simulation after the compression processing is executed. It is characterized in that it is output together with the result data.

In order to achieve the above object, a data compression method in a simulation execution device according to the present invention includes a first step of setting a division point based on a simulation time with respect to simulation result data, and setting the division point by the division point setting means. A second step of dividing the simulation result data according to a division point; and replacing the frequent specific data in the simulation result data with a small-sized conversion key for the simulation result data divided by the division unit. And a third step of compression.

According to a fifth aspect of the present invention, in the data compression method, the division point is reflected between the second step of dividing the simulation result data and the third step of compressing the simulation result data. Generating a file name and attaching it to the file of the divided simulation result data.

According to a sixth aspect of the present invention, in the data compression method of the present invention, after the third step of compressing the simulation result data, a conversion table indicating a correspondence relationship between the frequent data to be compressed and the conversion key is created. And outputting together with the simulation result data after the execution of the compression processing.

[0013]

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

FIG. 1 is a block diagram showing a configuration of a simulation execution device according to an embodiment of the present invention.

Referring to FIG. 1, a simulation execution device 10 of the present invention includes a simulation execution unit 20 for executing a simulation, an output format determination unit 30 for dividing, compressing and outputting simulation result data, and an output format determination unit 30. And a division point setting unit 40 for setting a division position of the simulation result data according to the above. In the drawings, only the characteristic configuration of the present invention is described, and the description of other configurations is omitted.

The simulation execution unit 20 is realized by a program-controlled CPU or the like, and executes various simulations to obtain time-series simulation result data.

The output format determination unit 30 is realized by a CPU and a memory controlled by a program, and divides, compresses, and outputs simulation result data obtained by the simulation execution unit 20. As shown in the drawing, the output format determination unit 30 includes a data division unit 31 for dividing the simulation result data and setting a file name, and a data compression unit 32 for compressing the divided simulation result data.
And In the present embodiment, the simulation result data is divided based on the simulation time in consideration of the fact that the simulation result data is data of the own series.

FIG. 2 shows a configuration of the data division unit 31 and the data compression unit 32 of the output format determination unit 30.

As shown in FIG. 2, the data dividing unit 31
A division point determination unit 311 for recognizing a division point of the simulation result data, an internal file generation unit 312 for designating an internal file according to the recognized division point and registering the simulation result data, and a compression unit for compressing the generated internal file. 32, and an internal file output unit 313 for sending to the C. 32.

The division point determination unit 311 determines whether a division point has been set in the input simulation result data, and if not, sets a division point in accordance with an instruction from the division point setting unit 40. Here, the division point designates a place where the simulation result data is divided, and is set using the simulation time in the present embodiment as described above.

The internal file generation unit 312 sets an internal file with a file name reflecting the division time for each division point recognized or set by the division point determination unit 311. Then, the simulation result data up to the simulation time corresponding to the division point is stored in the internal file. FIG. 5 shows a configuration example of the internal file. In the illustrated example, the simulation result file 501 stores the data “15,000
The internal file 503 is divided using “Data3 event2 90.000” as the division point 502.

The internal file output unit 313 transfers the internal file storing the simulation result data corresponding to the simulation time to the data compression unit 32.

The compression section 32, as shown in the figure, shows a conversion target key / conversion key replacement section 321 for performing data compression by replacing a conversion target key with a conversion key, and shows the correspondence between the conversion target key and the conversion key. Conversion table generation unit 322 that generates a conversion table
And a file output unit 323 that outputs the processed simulation result data and the generated conversion table.

The conversion target key / conversion key replacement unit 321
Of the simulation result data for each internal file received from the data division unit 31, data to be converted at the time of data compression (conversion target key) is detected and replaced with short data (search key) composed of keywords and numerical values. . As the conversion target key, data with high conversion efficiency (data that frequently appears or data with a large size) can be set according to the content of the simulation to be processed.

The conversion table generation unit 322 performs a conversion based on the result of the replacement process performed by the conversion target key / conversion key replacement unit 321.
A conversion table indicating the correspondence between the conversion target key and the conversion key is generated. FIG. 6 shows an example of the conversion table. In the illustrated example, Data1, Data2, and event are conversion target keys that are frequently output information such as a data ID and an event name.
1 and event2 are defined, and “00000000” and “00000000” are
1 "," 00010000 ", and" 0001000 "
1 "is associated therewith.

The file output unit 323 outputs a key to be converted
The data file of the simulation result data subjected to the replacement processing by the conversion key replacement unit 321 is output under the file name given by the internal file generation unit 312 of the data division unit 31, and stored in the external storage device via the input / output interface 50. I do. At this time, the conversion table generation unit 322
The conversion table generated in step 2 is also stored in the external storage device.

The division point setting section 40 is realized by a program-controlled CPU and a predetermined input device such as a keyboard, and sets division points for dividing the simulation result data. As described above, the division point is set based on the simulation time. As a method of setting the division point, the simulation result data can be divided at regular intervals (for example, every 10 minutes) set at the simulation time. Also,
The division may be performed by designating a predetermined simulation time. The file name set by reflecting the division point is, for example, a file name that specifies the number of the file when the simulation result data is divided periodically, and the file name when the simulation result data is divided at the specified simulation time. It can be a file name containing the simulation time.

Next, the operation of this embodiment will be described with reference to the flowcharts of FIGS.

FIG. 3 is a flowchart showing the processing of the data division unit 31 of the output format determination unit 30, and FIG. 4 is a flowchart showing the processing of the data compression unit 32.

When a simulation is executed by the simulation execution device 10, the division point setting unit 40 sets a simulation time serving as a division point when dividing the simulation result data. And
The simulation execution unit 20 sends the obtained simulation result data to the output format determination unit 30.

The simulation result data sent to the output format determining unit 30 is first passed to the data dividing unit 31. In the data division unit 31, the division point determination unit 3
11 determines whether or not a division point is set in the simulation result data (FIG. 3, step 3).
01). If the division point has not been set, the simulation time specified by the division point setting unit 120 is read, and a simulation time (division point) for dividing the simulation result data and generating an internal file is set (step 302). ). If a division point has already been set, and step 302
After setting the division point, the internal file generation unit 3
The process moves to 12.

The internal file generating unit 312 first generates an internal file with a file name reflecting the division point information (the simulation time) based on the division points of the simulation result data (step 303). Then, the simulation result data is sequentially accumulated according to the simulation time, and it is determined whether or not the simulation time of the simulation result data is set as a division point (step 304). If the simulation time of the simulation result data being processed is not set as a division point, the simulation result data is stored in the generated internal file (step 3).
07). The above processing is repeated until there is no simulation result data before the division point corresponding to the file name of the internal file, that is, until the simulation result data at the division point is reached (step 308).

On the other hand, when the simulation time of the simulation result data being processed is set as a division point, the internal file created by accumulating the simulation result data before the simulation time is transmitted via the internal file output unit 313. Output to the data compression unit 32 (step 305). Then, when the processing has been completed for all the simulation result data, the processing by the data dividing unit 31 ends (step 306).

When there is unprocessed simulation result data, the remaining simulation result data is simulation result data at a simulation time later than the simulation time corresponding to the file name of the internal file passed to the data compression unit 32. Therefore, in order to store this simulation result data,
An internal file is newly created with a file name reflecting the next division point (steps 306 and 30).
7). Then, the simulation result data following the internal file passed to the data compression unit 32 is stored (step 308), and the process is repeated until the simulation result data at the division point corresponding to the file name of the newly generated internal file is reached (step 308). 309).

If there is no more data to be processed before the simulation result data of the division point corresponding to the file name of the internal file has been reached, the simulation is not performed until the simulation time of the division point corresponding to the file name. This means that all the simulation result data has been processed at this point, so the internal file storing the simulation result data is passed to the data compression unit 32 (step 310).

When the data compression section 32 receives the internal file from the data division section 31, the conversion target key / conversion key replacement section 321 first registers the predetermined conversion target key and the corresponding conversion key. Is determined (step 401). If not stored, the conversion target key and the conversion key are registered to prepare for the replacement process (step 402).

If the conversion target key and the conversion key have already been registered, or after registration in step 402, the conversion target key / conversion key replacement unit 321 detects the conversion target key from the simulation result data in the internal file. And replace it with a conversion key (step 403). And
It is checked whether the replaced data is the last line in the internal file. If the data is the last line, the file is generated by the conversion table generating unit 322 indicating the correspondence between the replaced conversion target key and the conversion key. The data is output via the file output unit 323 together with the conversion table, and is stored in the external storage device via the input / output interface 50 (step 4).
04, 405). Here, when the processing is completed for all the simulation result data, the data compression unit 3
2 is completed (step 406).

If there is still data to be processed,
The above processing is repeated from the beginning for the subsequent simulation result data (step 407).

When the replaced data is not the last line in the internal file but there is no more data to be processed, all the simulation result data has been processed. Is output via the file output unit 323 together with the conversion table generated by the conversion table generation unit 322 indicating the correspondence between the replaced conversion target key and the conversion key, and is output to the external storage device via the input / output interface 50. It is stored (step 408).

As described above, the simulation result data is divided according to the simulation time, and the specific data, which is suitable for compressing the data in which the specific data repeats frequently, such as the simulation result data, is encoded. The simulation result data can be compressed and stored in the external storage device by the method of replacing with the converted conversion key. In addition, by assigning a file name reflecting information on the simulation time to each file obtained by dividing the simulation result data, desired simulation result data can be specified by the file name.

Although the present invention has been described with reference to the preferred embodiments, the present invention is not necessarily limited to the above-described embodiments.

[0042]

As described above, according to the simulation execution apparatus and the data compression method of the present invention, the simulation result data is divided at an arbitrary simulation time, and the information reflecting the simulation time is included in the file name. Thus, there is an effect that the target simulation result data can be easily searched when it is necessary to analyze the simulation result data in a predetermined time zone.

Thus, it is possible to perform statistical processing on the whole by referring to the contents of the simulation result data in a compressed state.

Further, by compressing the divided simulation result data using a method of replacing specific data suitable for compression of data in which specific data repeatedly appears frequently with a small-sized conversion key, the CPU of the simulation execution device is compressed. And the load on the external storage device can be reduced, the area occupied by the external storage device can be reduced, and efficient operation can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a simulation execution device according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a detailed configuration of an output format determination unit.

FIG. 3 is a flowchart illustrating a process of a data division unit.

FIG. 4 is a flowchart illustrating processing of a data compression unit.

FIG. 5 is a diagram showing a configuration example of an internal file.

FIG. 6 is a diagram illustrating a configuration example of a conversion table.

FIG. 7 is a block diagram showing a conventional simulation execution device.

[Explanation of symbols]

 Reference Signs List 10 simulation execution device 20 simulation execution unit 30 output format determination unit 31 data division unit 32 data compression unit 40 division point setting unit

Claims (6)

[Claims] 1. A division point setting means for setting a division point based on a simulation time for a simulation result data; a division means for dividing the simulation result data according to a division point set by the division point setting means; A simulation unit for compressing the simulation result data divided by the division unit by replacing specific data that frequently appears in the simulation result data with a conversion key having a small size; . 2. The method according to claim 1, wherein the dividing unit assigns a file name reflecting the dividing point to the file of the divided simulation result data.
3. The simulation execution device according to 1. 3. The compression means creates a conversion table indicating a correspondence relationship between the frequent data to be compressed and the conversion key, and outputs the conversion table together with the simulation result data after the execution of the compression processing. The simulation execution device according to claim 1. 4. A first step of setting a division point on the simulation result data based on a simulation time, and a second step of dividing the simulation result data according to the division point set by the division point setting means. And a third step of compressing the simulation result data divided by the division unit by replacing specific data that frequently appears in the simulation result data with a small-sized conversion key. Data compression method to use. 5. A method for generating a file name reflecting the division point between the second step of dividing the simulation result data and the third step of compressing the simulation result data to generate the divided simulation. 5. The data compression method according to claim 4, further comprising a step of attaching the result data to a file. 6. After the third step of compressing the simulation result data, a conversion table indicating the correspondence between the frequently-appearing data to be compressed and the conversion key is created, and the simulation result after the execution of the compression processing is created. 5. The data compression method according to claim 4, further comprising a step of outputting together with the data.