Framework Design, Parallelization and Force Computation in Molecular Dynamics

نویسنده

  • Thierry Matthey
چکیده

We have performed constant temperature two-dimensional molecular dynamicssimulations of a binary Lennard-Jones material, representing an idealized metallic alloy or amaterial containing a specified fraction of an additive atomic species. Differences in the interatomicpotentials between the atomic species can lead to clustering of the alloy atoms. An exponentialdistribution of cluster size is obtained as time approaches infinity. For sufficiently strong attractionsthe distribution of cluster sizes becomes nearly independent of the force and the attained maximumcluster size reaches a saturation level.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Parallelization Strategies for a Molecular Dynamics Program

A molecular-dynamics program typically takes several man-years to write and therefore is representative for a large class of scientiic programs whose rewriting should not be taken lightly. This paper discusses two Intel hypercube adaptations, UHGROMOS and Euler-GROMOS (in progress), of a \dusty-deck" molecular-dynamics code, GROMOS. UHGROMOS uses a low-impact parallelization strategy to minimiz...

متن کامل

PARALLELIZATION FRAMEWORK FOR SCIENTIFIC APPLICATION KERNELS ON MULTI-CORE/MANY-CORE PLATFORMS by Liu Peng A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA

ion to allow reasoning about their behavior across a broad range of applications. Programs that are members of a particular class can be implemented differently and the underlying numerical methods may change over time, but the claim is that the underlying 3 patterns have persisted through generations of changes and will remain important into the future. The seven dwarfs defined by Phil Colella...

متن کامل

Planar Molecular Dynamics Simulation of Au Clusters in Pushing Process

Based on the fact the manipulation of fine nanoclusters calls for more precise modeling, the aim of this paper is to conduct an atomistic investigation for interaction analysis of particle-substrate system for pushing and positioning purposes. In the present research, 2D molecular dynamics simulations have been used to investigate such behaviors. Performing the planar simulations can provide a ...

متن کامل

Iterative Force-Field Calculation and Molecular Dynamics of Cyclooctanone

Body's iterative force-field computer program has been used to calculate strain energies in cyclooctanone (I). 348 MHZ 1H NMR spectra of (I) have been investigated over the temperature range of 25° to -160°C. Two conformation processes affect the 1H NMR spectrum of (I). Iterative force-field calculations on the conformations and conformational interconversion paths of ...

متن کامل

ProtoMol: A Molecular Dynamics Framework with Incremental Parallelization

Molecular dynamics (MD) for a classical unconstrained simulation of bimolecular systems requires the solution of Newton’s equations of motion. At each step, one evaluates the contribution of interacting forces, and these are applied to the system using a numerical integrator. The most computationally expensive part is the force evaluation among atoms. MD is a challenging application because the...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2002