Time Integration Parallel in Time

In this paper the research behind the parallelization on the GPU of the time parallel time integration method Parareal. Firstly, the theory behind Parareal and its convergence theorems will be detailed. Then, two test models, the Lorenz system and Heat diffusion equation, will be introduced. Additionally, the derivation of the Forward Euler and...

Massive Parallelization of Trajectory Propagations Using GPUs

Space mission complexity is constantly increasing, therefore there is a growing demand for highly accurate and fast trajectory design and simulation tools. Some astrodynamics applications, such as planetary protection simulations, require millions of total simulated years to quantify certain probabilities with a high confidence level. It is...

Parallelizing a Video Filter-chain for Multi- and Many-core Systems

Developing parallel applications to make efficient use of current and emerging parallel architectures remains a big challenge in modern application development where performance is a first-class citizen. Optimizing conventional video filter applications to take advantage of current multi- and many-core architectures is one such application. This...

Towards Dynamic Adaptation of Parallelism for Better Performance and Less Energy Consumption

It is possible to reduce the computation time of data parallel programs by dividing the computation work among different threads and executing them on multiple compute cores. Some data parallel programs are functionally correct only when they are solved with a specific number of threads. For these programs, the question whether or not...

Parallel deflated CG methods applied to linear systems from moving boundary problems

In this report we give a short overview of aspects on parallel deflated conjugate gradient method which is applied on large, sparse, symmetric and semi-positive definite linear systems obtained from moving boundary problems. Moreover, we present some results of small numerical experiments. After introducing the Navier-Stokes equations for...