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OpenFOAM (Open-source Field Operation And Manipulation) is well-known software in computational fluid mechanics (CFD). It contains several standard solvers for simulating a broad range of continuum flows. Using the OpenFOAM toolbox, users can build their own solver to solve specific problems. OpenFOAM is open-source software under the GNU General Public License Version 3.

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1. Out of memory
   If users encounter
   slurmstepd: error: Detected ... oom-kill event(s) ... killed by the cgroup out-of-memory handler
   in any log file, try increasing RAM per CPU core by adding

   • #SBATCH --mem-per-cpu=3800M – while having ntasks-per-node <= 64 or

   • #SBATCH --mem-per-cpu=7600M – while having ntasks-per-node <= 32

   to your submitFoam.sh.
   

2. Floating-point exception trapping
   By default, the floating-point exception trapping is disabled. To enable, add export FOAM_SIGFPE=true to your script.
   

3. Building custom executable
   Please use

   • FOAM_USER_APPBIN in place of FOAM_APPBIN and FOAM_SITE_APPBIN

   • FOAM_USER_LIBBIN in place of FOAM_LIBBIN and FOAM_SITE_LIBBIN

   to avoid permission denied.
   [v2212] To manually specify those paths, see $WM_PROJECT_DIR/bin/tools/change-userdir.sh

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