Particle-Mesh Ewald and rRESPA for Parallel Molecular Dynamics Simulations

نویسندگان

  • Steven J. Plimpton
  • Roy Pollock
  • Mark Stevens
چکیده

The parallel implementation of a molecular dynamics code suitable for simulationof general molecular systems using spatial{decomposition methods is discussed. Long-range Coulombic forces are computed using a particle-mesh Ewald (PPPM) technique. A multiple{timescale integration method known as rRESPA is also used to improve the computational eeciency. The load{balancing and interprocessor communication issues that arise from implementing PPPM and rRESPA within a spatial{decomposition framework are highlighted. Some performance numbers for large{scale biomembrane simulations on a Intel Paragon are given.

برای دانلود رایگان 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

An efficient parallel implementation of the smooth particle mesh Ewald method for molecular dynamics simulations

This paper focuses on the implementation and the performance analysis of a smooth particle mesh Ewald method on several parallel computers. We present the details of the algorithms and our implementation that are used to optimize parallel efficiency on such parallel computers. © 2007 Elsevier B.V. All rights reserved. PACS: 02.70.Ns; 07.05.Tp

متن کامل

Efficient multiple time step method for use with Ewald and particle mesh Ewald for large biomolecular systems

The particle–particle particle–mesh ~P3M! method for calculating long-range electrostatic forces in molecular simulations is modified and combined with the reversible reference system propagator algorithm ~RESPA! for treating the multiple time scale problems in the molecular dynamics of complex systems with multiple time scales and long-range forces. The resulting particle–particle particle–mes...

متن کامل

An FPGA Implementation of Reciprocal Sums for SPME

Molecular Dynamics simulations have become an interesting target for acceleration using Field-Programmable Gate Arrays (FPGA). Still to be attempted completely in FPGA hardware is the computation of the Coulombic interactions using the Smooth Particle Mesh Ewald (SPME) algorithm. In this work, we describe the design, the implementation, and the verification effort of an FPGA compute engine, nam...

متن کامل

Efficient multiple-time-step integrators with distance-based force splitting for particle-mesh-Ewald molecular dynamics simulations

We develop an efficient multiple-time-step force splitting scheme for particle-mesh-Ewald molecular dynamics simulations. Our method exploits smooth switch functions effectively to regulate direct and reciprocal space terms for the electrostatic interactions. The reciprocal term with the near field contributions removed is assigned to the slow class; the van der Waals and regulated particle-mes...

متن کامل

Scalable Multi-GPU Simulation of Long-Range Molecular Dynamics

Molecular dynamics simulations allow us to study the behavior of complex biomolecular systems by modeling the pairwise interaction forces between all atoms. Molecular systems are subject to slowly decaying electrostatic potentials, which turn molecular dynamics into an n-body problem. In this paper, we present a parallel and scalable solution to compute long-range molecular forces, based on 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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1997