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All posts by Jan-Philipp Weiss

Strategies to Counter Small Automatic Time Steps

March 16, 2020

When solving a model, you may encounter a varying time step and discretization order, or NLfail or Tfail could be greater than 0. Use these strategies to improve the efficiency of the simulation.

Automatic Time Step and Order Selection in Time-Dependent Problems

June 20, 2019

Here’s an intro to the time-dependent solver log in COMSOL Multiphysics® and an in-depth look at the theory behind discrete time-stepping schemes and optimal time steps and discretization orders.

Using the Domain Decomposition Solver for Thermoviscous Acoustics

November 25, 2016

Learn how to use the Domain Decomposition solver, a memory-efficient iterative algorithm with inherent parallelism on the geometric level, in COMSOL Multiphysics®.

Using the Domain Decomposition Solver in COMSOL Multiphysics®

November 23, 2016

The Domain Decomposition solver is a memory-efficient iterative algorithm that works best for large modeling problems that can’t be solved with other direct or iterative methods.

Hybrid Computing: Advantages of Shared and Distributed Memory Combined

March 6, 2014

Previously in this blog series, my colleague Pär described parallel numerical simulations with COMSOL Multiphysics on shared and distributed memory platforms. Today, we discuss the combination of these two methods: hybrid computing. I will try to shed some light onto the various aspects of hybrid computing and modeling, and show how COMSOL Multiphysics can use hybrid configurations in order to squeeze out the best performance on parallel platforms.


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