Title of article :
An adaptive hierarchical domain decomposition method for parallel contact dynamics simulations of granular materials
Author/Authors :
Shojaaee، نويسنده , , Zahra and Reza Shaebani، نويسنده , , M. and Brendel، نويسنده , , Lothar and Tِrِk، نويسنده , , Jلnos and Wolf، نويسنده , , Dietrich E.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Pages :
17
From page :
612
To page :
628
Abstract :
A fully parallel version of the contact dynamics (CD) method is presented in this paper. For large enough systems, 100% efficiency has been demonstrated for up to 256 processors using a hierarchical domain decomposition with dynamic load balancing. The iterative scheme to calculate the contact forces is left domain-wise sequential, with data exchange after each iteration step, which ensures its stability. The number of additional iterations required for convergence by the partially parallel updates at the domain boundaries becomes negligible with increasing number of particles, which allows for an effective parallelization. Compared to the sequential implementation, we found no influence of the parallelization on simulation results.
Keywords :
Hierarchical domain decomposition , Load balancing , MPI library , Contact dynamics method , granular materials
Journal title :
Journal of Computational Physics
Serial Year :
2012
Journal title :
Journal of Computational Physics
Record number :
1484056
Link To Document :
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