Method of quickly reading and writing mass data file

A mass data and file technology, applied in the direction of memory address/allocation/relocation, input/output to record carrier, etc., can solve problems that take tens of minutes or even dozens of hours to reduce memory fragmentation and improve memory Efficiency of use, effect of improving reading and writing speed

Active Publication Date: 2011-09-21
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It takes dozens of minutes or even hours to read and write data of the size of physical layout data files in the traditional data input and output mode. However, in the design process, especially at the back end of t

Method used

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  • Method of quickly reading and writing mass data file
  • Method of quickly reading and writing mass data file
  • Method of quickly reading and writing mass data file

Examples

Experimental program
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Example Embodiment

[0014] The technical scheme of the present invention can be applied to the automation software of integrated circuit design such as physical synthesis, physical verification, parasitic parameter extraction, etc. The sea physical layout data file generated in the integrated circuit design can be quickly read and written between the computer memory and the hard disk. To avoid the design bottleneck caused by the input and output of massive physical layout data in the integrated circuit design process.

[0015] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0016] figure 1 It is a flow chart of the method for quickly reading and writing massive data files provided by this embodiment, including the following steps:

[0017] Step 101: Classify the data types of the physical layout data. The physical layout data classificatio...

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Abstract

The invention discloses a method of quickly reading and writing a physics territory data, comprising the steps of classifying the data type of the physics territory data, applying storage page for data of different data types, storing the data of same type in the same storage page of a memory, and writing in all the data in the storage page to a hard disk one-time by utilizing the quick writing-in process from the storage page to the hard disk. By the method of quickly reading and writing a physics territory data of the invention, the concrete data type, concrete data unit and reconstruction of the concrete data unit require no concern, the reconstructions one by one of all data are avoided, the reading and writing speeds are improved, and the quick reading and writing of the mass integrated circuit physical layout data between the computer memorizer and the hard disk is realized.

Description

technical field [0001] The invention relates to the field of electronic design automation (EDA), in particular to a method for quickly reading and writing massive data files. Background technique [0002] The physical layout data file is the file with the largest amount of data in the system integrated circuit chip (SOC) design. The size of the physical layout data file of the existing SOC circuit is on the order of several GB to dozens of GB. With the continuous development of technology and continuous improvement of design technology, the physical layout data scale of SOC circuits will reach the order of hundreds of GB. [0003] In the SOC design process, the reading and writing of physical layout data is relatively frequent: physical synthesis needs to write physical layout data; physical layout optimization needs to read and write physical layout data; geometric design rule checking needs to read physical layout data; Parameter extraction needs to read physical layout d...

Claims

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Application Information

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IPC IPC(8): G06F12/08G06F3/06
Inventor 吴玉平陈岚叶甜春
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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