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Graphic processor parallel solving method for polymer molecular weight distribution solving

A graphics processor and molecular weight distribution technology, which is applied in the field of simulation and solution of molecular weight distribution of free radical polymerization, can solve the problems of differential equations that take a long time and cannot meet the optimization application, and achieve low power consumption, increase calculation speed, and Good scalability

Inactive Publication Date: 2011-05-11
ZHEJIANG UNIV
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Problems solved by technology

Among them, small-scale differential algebraic equations can be solved quickly, but the solution of large-scale differential equations takes a long time, which cannot meet the needs of further optimization applications

Method used

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  • Graphic processor parallel solving method for polymer molecular weight distribution solving

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Embodiment

[0045] In this embodiment, the number of discrete time points required to solve the large-scale radical polymerization model is 308, the maximum chain length is set to 5000, and the following steps are included in the computer system:

[0046] The main thread of control on a computer operating system consists of the following steps:

[0047] 1) Determine the number of discrete time points in the free radical polymerization model as 308, and number each time point;

[0048] 2) Apply to the Unified Computing Architecture Block resources and set the number of Theads in each Block to 128, and number each Block so that each Block corresponds to a discrete time point;

[0049] 3) Write the kernel function of the unified computing architecture, and use the graphics processor to solve the large-scale free radical polymerization reaction model sequentially and in parallel;

[0050] 4) Start the kernel function of the unified computing architecture, and wait for the image processor t...

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Abstract

The invention discloses a graphic processor parallel solving method for polymer molecular weight distribution solving. The method comprises the following steps of: establishing a dynamic analog mechanism model of free radical polymerization reaction to solve polymer molecular weight distribution; decomposing the mechanism model into a small-scale free radical polymerization reaction model and a large-scale free radical polymerization reaction model by a decoupling method; solving the small-scale free radical polymerization reaction model by utilizing a step and order changing backward difference method; and solving the large-scale free radical polymerization reaction model by a parallel sequential method to accelerate the solution of molecular weight distribution calculation by using a graphic processor of the NVIDIA corporation as a calculation platform. Compared with the traditional nonparallel polymer molecular weight distribution solving method, the invention can fully utilize thecharacteristic of high parallel processing ability of the current graphic processor and improve the solving speed of model calculation. The method adopted by the invention has concise and clear principle and is convenient to realize on a computer system with the NVIDIA graphic processor.

Description

technical field [0001] The invention relates to the field of simulation solution of free radical polymerization molecular weight distribution, in particular, relates to a graphics processor parallel solution method for solving polymer molecular weight distribution. Background technique [0002] The molecular weight distribution of polymers is the main factor determining the performance and processing properties of polymers. Through the model that can accurately predict the molecular weight distribution, we can realize the soft-sensing technology of free radical polymerization, and the model can be further used for optimization applications, and the purpose of optimizing product performance can be achieved by adjusting relevant reaction parameters. Therefore, it is very necessary to predict the molecular weight distribution curve of the polymer during the polymerization process. [0003] The traditional molecular weight distribution calculation mainly uses the concepts o...

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Application Information

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IPC IPC(8): G06F9/38
Inventor 陈智强陈曦邵之江姚臻钱积新
Owner ZHEJIANG UNIV
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