3 papers
cs.MS2017
High-Performance Derivative Computations using CoDiPack
Max Sagebaum, Tim Albring, Nicolas R. Gauger
There are several AD tools available, which all implement different strategies for the reverse mode of AD. The major strategies are primal value taping (implemented e.g. by ADOL-c)…
math.OC2017
A Non-Intrusive Parallel-in-Time Adjoint Solver with the XBraid Library
Stefanie Günther, Nicolas R. Gauger, Jacob B. Schroder
In this paper, an adjoint solver for the multigrid in time software library XBraid is presented. XBraid provides a non-intrusive approach for simulating unsteady dynamics on multip…
math.OC2015
Simultaneous Single-Step One-Shot Optimization with Unsteady PDEs
Stefanie Günther, Nicolas R. Gauger, Qiqi Wang
The single-step one-shot method has proven to be very efficient for PDE-constrained optimization where the partial differential equation (PDE) is solved by an iterative fixed point…