Three parallel algorithms for classical molecular dynamics are presented. The first assigns each processor a fixed subset of atoms; the second assigns each a fixed subset of inter-atomic forces to compute; the third assigns each a fixed spatial region. The algorithms are suitable for molecular dynamics models which can be difficult to parallelize efficiently—those with short-range forces where the neighbors of each atom change rapidly. They can be implemented on any distributed-memory parallel machine which allows for message-passing of data between independently executing processors. The algorithms are tested on a standard Lennard-Jones benchmark problem for system sizes ranging from 500 to 100,000,000 atoms on several parallel supercomputers--the nCUBE 2, Intel iPSC/860 and Paragon, and Cray T3D. Comparing the results to the fastest reported vectorized Cray Y-MP and C90 algorithm shows that the current generation of parallel machines is competitive with conventional vector supercomputers even for small problems. For large problems, the spatial algorithm achieves parallel efficiencies of 90% and a 1840-node Intel Paragon performs up to 165 faster than a single Cray C9O processor. Trade-offs between the three algorithms and guidelines for adapting them to more complex molecular dynamics simulations are also discussed.

Fast parallel algorithms for short-range molecular dynamics

다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

비만아 부모의 돌봄 경험: q 방법론

This chapter introduces the finite element method (FEM) as a tool for solution of classical electromagnetic problems. Although we discuss the main points in the application of the finite element method to electromagnetic design, including formulation and implementation, those who seek deeper understanding of the finite element method should consult some of the works listed in the bibliography section.

Introduction to the Finite Element Method

http://wp.kntu.ac.ir/ghasemzadeh/paper/J%2092%20ghasemzadeh%20geotechnical%20%20properties%20contaminated%20engineering%20geology.pdf

Geotechnical properties of gas oil-contaminated kaolinite

Effect of diesel-contamination on geotechnical properties of illite soil

Application of novel Persian gum hydrocolloid in soil stabilization

https://wp.kntu.ac.ir/ghasemzadeh/paper/J%2090%20ghasemzadeh%20pile-soil-pile%20%20soil%20dynamics&%20Earthquake.pdf

Hasan Ghasemzadeh

Papers

Geotechnical properties of gas oil-contaminated kaolinite

Effect of diesel-contamination on geotechnical properties of illite soil

Application of novel Persian gum hydrocolloid in soil stabilization

Pile–soil–pile interaction in pile groups with batter piles under dynamic loads

Effects of A low-carbon emission additive on mechanical properties of fine-grained soil under freeze-thaw cycles