Issues with Calculix-preCICE-InterFoam simulation when running Flap case in parallel

Makis · February 9, 2026, 1:55pm

Hi @Alejo321,

thank you for reporting this, I can reproduce it. I opened an issue to collect more details:

github.com/precice/tutorials

Breaking dam 2D fails in parallel

opened 01:54PM - 09 Feb 26 UTC

MakisH

bug

When running the [breaking dam 2D tutorial](https://precice.org/tutorials-breaki…ng-dam-2d.html) in parallel: ``` # fluid-openfoam ./run.sh -parallel # solid-calculix ./run.sh ``` the CalculiX participant crashes at t=0.6s. Reported by a user in the [forum](https://precice.discourse.group/t/issues-with-calculix-precice-interfoam-simulation-when-running-flap-case-in-parallel/2720). - Tutorials state (last commit / release): 9894b79305894d4ed8d78ec8c159cad5ab5768b5 (but much earlier versions should be relevant as well) - Versions of solvers and adapters used: OpenFOAM v2512, OpenFOAM adapter f7e2d, CalculiX v2.20, CalculiX adapter 11993 - preCICE version: v3.3.1 - Log files: - [fluid-openfoam.log](https://github.com/user-attachments/files/25184745/fluid-openfoam.log) - [solid-calculix.log](https://github.com/user-attachments/files/25184751/solid-calculix.log) - [precice-Solid-convergence.log](https://github.com/user-attachments/files/25184757/precice-Solid-convergence.log) - [precice-Solid-iterations.log](https://github.com/user-attachments/files/25184758/precice-Solid-iterations.log) <img width="1508" height="911" alt="Image" src="https://github.com/user-attachments/assets/215c2bba-05d6-498f-84c3-612d6d04e893" /> I have not yet compared with the serial case, I will add more results once available.

Topic		Replies	Views
Problem in calling the adapted Calculix on HPC Official adapters and tutorials adapters , configuration , calculix	11	718	July 28, 2023
Simulation get stuck when running in parallel Official adapters and tutorials openfoam , adapters , calculix	4	780	November 8, 2021
OpenFOAM/CalculiX FSI Simulation Crashes at ~5s - Help Needed! Official adapters and tutorials openfoam , calculix , fsi	15	405	January 16, 2026
Calculix parallelization Official adapters and tutorials openfoam , calculix , fsi	11	3681	April 19, 2021
Parallel run with preCICE coupling openFOAM and Calculix Using preCICE fsi	21	385	May 4, 2026

Issues with Calculix-preCICE-InterFoam simulation when running Flap case in parallel

Related topics