ppohDEM: Computational performance for open source code of the discrete element method

Abstract
We investigate performance improvements for the discrete element method (DEM) used in ppohDEM. First, we use OpenMP and MPI to parallelize DEM for efficient operation on many types of memory, including shared memory, and at any scale, from small PC clusters to supercomputers. We also describe a new algorithm for the descending storage method (DSM) based on a sort technique that makes creation of contact candidate pair lists more efficient. Finally, we measure the performance of ppohDEM using ...

Title of program: ppohDEM
Catalogue Id: AESI_v1_0

Nature of problem
Collision dynamics of viscoelastic particles with friction in powder engineering and soil mechanics.

Versions of this program held in the CPC repository in Mendeley Data
AESI_v1_0; ppohDEM; 10.1016/j.cpc.2014.02.014

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

摘要：本研究探讨了离散元法（DEM）在ppohDEM中的应用性能提升。首先，我们利用OpenMP和MPI技术对DEM进行并行化处理，以实现其在多种内存类型上的高效运行，包括共享内存，并适用于任何规模，从小型PC集群到超级计算机。此外，我们还介绍了一种基于排序技术的下降存储方法（DSM）新算法，该算法提高了创建接触候选对列表的效率。最后，我们通过测量评估了ppohDEM的性能。

程序名称：ppohDEM

目录编号：AESI_v1_0

问题性质：粉末工程和土力学中具有摩擦的粘弹性粒子的碰撞动力学。

Mendeley数据中CPC存储库中保存的此程序的版本：AESI_v1_0; ppohDEM; 10.1016/j.cpc.2014.02.014

此程序已从贝尔法斯特女王大学（1969-2019年）持有的CPC程序库中导入。