2 papers
math.NA2025
An Adaptive Mixed Precision and Dynamically Scaled Preconditioned Conjugate Gradient Algorithm
Yichen Guo, Eric de Sturler, Tim Warburton
We propose an adaptive mixed precision and dynamically scaled preconditioned conjugate gradient algorithm (AMP-PCG). It dynamically adjusts the precision for storing vectors and co…
math.NA2024
Stopping Criteria for the Conjugate Gradient Algorithm in High-Order Finite Element Methods
Yichen Guo, Eric de Sturler, Tim Warburton
We consider stopping criteria that balance algebraic and discretization errors for the conjugate gradient algorithm applied to high-order finite element discretizations of Poisson…