A Multi-GPU Parallel Algorithm in Hypersonic Flow Computations

Hypersonic Flow Computations on Unstructured Meshes

A method for computing inviscid hypersonic ow over complex con gurations using unstructuredmeshes is presented. The unstructured grid solver uses an edge{based nite{volume formulation. Fluxes are computed using a ux vector splitting scheme that is capable of representing constant enthalpy solutions. Second{order accuracy in smooth ow regions is obtained by linearly reconstructing the solution, ...

Multi-level parallelism for incompressible flow computations on GPU clusters

We investigate multi-level parallelism on GPU clusters with MPI-CUDA and hybrid MPI-OpenMP-CUDA parallel implementations, in which all computations are done on the GPU using CUDA. We explore efficiency and scalability of incompressible flow computations using up to 256 GPUs on a problem with approximately 17.2 billion cells. Our work addresses some of the unique issues faced when merging fine-g...

Multi-GPU Parallel Memetic Algorithm for Capacitated Vehicle Routing Problem

The goal of this paper is to propose and test a new memetic algorithm for the capacitated vehicle routing problem in parallel computing environment. In this paper we consider a simple variation of the vehicle routing problem in which the only parameter is the capacity of the vehicle and each client only needs one package. We analyze the efficiency of the algorithm using the hierarchical Paralle...

An Evaluation of Euler Fluxes for Hypersonic Flow Computations

Evaluation of Euler Fluxes for Hypersonic Flow Computations

Shock-capturing finite volume schemes often give rise to anomalous results in hypersonic flow.We present a wideranging survey of numerical experiments from 12 different flux functions in oneand two-dimensional contexts. Included is a recently developed function that satisfies the second law of thermodynamics. It is found here that there are at least two kinds of shock instabilities: one is one-...