scholarly journals Equilibrium equation of state of a hard sphere binary mixture at very large densities using replica exchange Monte Carlo simulations

2011 ◽  
Vol 134 (5) ◽  
pp. 054504 ◽  
Author(s):  
Gerardo Odriozola ◽  
Ludovic Berthier
Keyword(s):  
Monte Carlo ◽  
Equation Of State ◽  
Binary Mixture ◽  
Monte Carlo Simulations ◽  
Equilibrium Equation ◽  
Hard Sphere ◽  
Replica Exchange ◽  
Replica Exchange Monte Carlo

scholarly journals Increasing the degree of parallelism using speculative execution in task-based runtime systems

2019 ◽  
Vol 5 ◽  
pp. e183 ◽  
Author(s):  
Bérenger Bramas
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
High Performance ◽  
Speculative Execution ◽  
Programming Models ◽  
Runtime Systems ◽  
Replica Exchange ◽  
Runtime System ◽  
Limited Degree ◽  
Replica Exchange Monte Carlo

Task-based programming models have demonstrated their efficiency in the development of scientific applications on modern high-performance platforms. They allow delegation of the management of parallelization to the runtime system (RS), which is in charge of the data coherency, the scheduling, and the assignment of the work to the computational units. However, some applications have a limited degree of parallelism such that no matter how efficient the RS implementation, they may not scale on modern multicore CPUs. In this paper, we propose using speculation to unleash the parallelism when it is uncertain if some tasks will modify data, and we formalize a new methodology to enable speculative execution in a graph of tasks. This description is partially implemented in our new C++ RS called SPETABARU, which is capable of executing tasks in advance if some others are not certain to modify the data. We study the behavior of our approach to compute Monte Carlo and replica exchange Monte Carlo simulations.

Hamiltonian replica exchange simulations of glucose oxidase adsorption on charged surfaces

2018 ◽  
Vol 20 (21) ◽  
pp. 14587-14596 ◽  
Author(s):  
Yun Xie ◽  
Zhanchao Li ◽  
Jian Zhou
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Glucose Oxidase ◽  
Replica Exchange ◽  
Hamiltonian Replica Exchange ◽  
Charged Surfaces ◽  
Replica Exchange Monte Carlo

Hamiltonian replica exchange Monte Carlo simulations efficiently identify the lowest-energy orientations of proteins on charged surfaces at variable ionic strengths.

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