Method of efficiency improvement of software used for solidification process simulations
Journal Title: Archiwum Odlewnictwa - Year 2011, Vol 11, Issue 2
Abstract
This paper presents a new method that can be used to improve the efficiency of applications used for simulations of solidification processes. The new approach concentrate on conductivity matrix building process. This operation requires information contained in finite element mesh description. Elements of this matrix depend also on temperature, which is computed in every time-steps. This situation requires multiple repeated building of the conductivity matrix (for each time-step). The new method described in this paper allows to divide the process of matrix building into two parts. The first one is built on the basis of finite element mesh description. It is independent of nodal temperature values determined in successive time-steps and can be performed only once, before first time-step. The second part of the matrix building process is performed on the basis of nodal temperature values, but does not require information about finite element mesh. Such separation of two steps of the conductivity matrix building process allows efficient implementation of simulation software for modern multi- and many-core architectures. This approach can be used to minimize the amount of data that must be transferred to memory of multi-core processors. Conducted research shows that such approach can also reduce time required for computation using sequential implementation for CPU and has no significant effect on the simulation results.
Authors and Affiliations
G. Michalski, J. Mikoda, N. Sczygiol
Keywords
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