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--- howto:openfoam [2026/02/24 10:43]
ccrosby [Warning: mpirun parameters changed]
+++ howto:openfoam [2026/02/24 13:03] (current)
ccrosby [Latest version: OpenFOAM-v2512]
@@ Line 5: / Line 5: @@
   - [[openfoam#compiling_your_own_openfoam_code|Compiling your own OpenFOAM code]]
   - [[howto:openfoam:hisa|Using the HiSA compressible Solver for OpenFOAM]]
+====== Latest version: OpenFOAM-v2512 ======
+The most recent available version is OpenFOAM-v2512.  In contrast to previous installations, this has been compiled with Intel's OneAPI compiler and runs under IntelMPI.  No special settings or parameters outside of the source script OF2512 are required.  Here is an example job script:
+<file bash runFoam2512.qsub>
+#!/bin/bash
+### This 72-way example calls
+### for 3 (virtual) nodes, each with 24 processor cores
+### Please note that it is necessary to specify both ncpus and mpiprocs, and
+### for OpenFOAM these should be identical to each other.
+### For your own benefit, try to estimate a realistic walltime request.  Over-estimating the
+### wallclock requirement interferes with efficient scheduling, will delay the launch of the job,
+### and ties up more of your CPU-time allocation untill the job has finished.
+#PBS -P projectid
+#PBS -l select=3:ncpus=24:mpiprocs=24:nodetype=haswell_reg
+#PBS -q normal
+#PBS -l walltime=01:00:00
+#PBS -o /mnt/lustre/users/username/foamJobs/job01/stdout
+#PBS -e /mnt/lustre/users/username/foamJobs/job01/stderr
+### Source the openFOAM environment:
+. /home/apps/chpc/compmech/OpenFOAM/OF2512
+# Set this environment variable explicitly.
+export PBS_JOBDIR=/mnt/lustre/users/username/foamJobs/job01
+# Explicitly change to the job directory
+cd $PBS_JOBDIR
+# Count the number of lines in the hosts file to get the number of processors
+nproc=`cat $PBS_NODEFILE | wc -l `
+#### These next statements build an appropriate decomposeParDict file
+#### based on the requested nunber of processors
+echo "FoamFile" > system/decomposeParDict
+echo "{"  >> system/decomposeParDict
+echo "  version             2.0;" >> system/decomposeParDict
+echo "  format            ascii;" >> system/decomposeParDict
+echo "  class        dictionary;" >> system/decomposeParDict
+echo "  object decomposeParDict;" >> system/decomposeParDict
+echo "}"  >> system/decomposeParDict
+echo "numberOfSubdomains " $nproc ";" >> system/decomposeParDict
+echo "method scotch;" >> system/decomposeParDict
+#### End of decomposeParDict file
+# Decompose the case into processor directories
+decomposePar -force > decompose.out
+# Run the solver, simpleFoam in this case
+mpirun -np $nproc simpleFoam -parallel > simpleFoam.out
+# Reconstruct the time directories from the processor directories
+reconstructPar > reconstruct.out
+# Clean up the processor directories
+rm -r processor*
+</file>
 ====== Warning: mpirun parameters changed ======
@@ Line 17: / Line 65: @@
 ===== Running OpenFOAM =====
-This section describes how to run OpenFOAM on the cluster at CHPC. Versions 6.0, 7.0, 8.0, 9.0, 10, 11, 12, 13, v1906, v1912, v2006, v2012, v2106, v2112, v2206, v2212, v2306, v2312, v2406, v2412 and foam-extend-3.1, 3.2, 4.0 and 5.0 are installed in ''/apps/chpc/compmech/CFD/OpenFOAM'' or ''/home/apps/chpc/compmech/OpenFOAM''.  Source the required environment from one of the files OF60, OF70, OF80, OF90, OF10, OF11, OF12, OF13, OFextend31, OFextend32, OFextend40, OFextend50, OF1906, OF1912, OF2006, OF2012 OF2106, OF2112, OF2206, OF2212, OF2306, OF2312, OF2406 or OF2412  respectively, as illustrated in the example job scripts below.  Please be aware that versions after 5.0 and 18.06 use MPICH rather than OpenMPI, and the mpirun command ** has to ** select the use of the Infiniband network interface.  However, as an experiment, OpenFOAM-v2412 has been compiled against OpenMPI, and for this version, ** do not specify -iface ib0**.  It is assumed that you are familiar with running OpenFOAM solvers in parallel, and have already set up the case directory. The Gmsh and cfMesh meshing utilities are also installed and are added to the executable path when any of the OFxxx files are sourced. OpenFOAM-extend-* has been installed on an experimental basis.  To enable it, source the appropriate file in /apps/chpc/compmech/CFD/OpenFOAM/, such as OFextend32.
+This section describes how to run OpenFOAM on the cluster at CHPC. Versions 6.0, 7.0, 8.0, 9.0, 10, 11, 12, 13, v1906, v1912, v2006, v2012, v2106, v2112, v2206, v2212, v2306, v2312, v2406, v2412, v2506, v2512 and foam-extend-3.1, 3.2, 4.0 and 5.0 are installed in ''/apps/chpc/compmech/CFD/OpenFOAM'' or ''/home/apps/chpc/compmech/OpenFOAM''.  Source the required environment from one of the files OF60, OF70, OF80, OF90, OF10, OF11, OF12, OF13, OFextend31, OFextend32, OFextend40, OFextend50, OF1906, OF1912, OF2006, OF2012 OF2106, OF2112, OF2206, OF2212, OF2306, OF2312, OF2406, OF2412, OF2506 and OF2512  respectively, as illustrated in the example job scripts below.  Please be aware that versions after 5.0 and 18.06 use MPICH rather than OpenMPI, and the mpirun command ** has to ** select the use of the Infiniband network interface.  However, as an experiment, OpenFOAM-v2412 has been compiled against OpenMPI, and for this version, ** do not specify -iface ib0**.  It is assumed that you are familiar with running OpenFOAM solvers in parallel, and have already set up the case directory. The Gmsh and cfMesh meshing utilities are also installed and are added to the executable path when any of the OFxxx files are sourced. OpenFOAM-extend-* has been installed on an experimental basis.  To enable it, source the appropriate file in /apps/chpc/compmech/CFD/OpenFOAM/, such as OFextend32.
 === Using MPICH instead of OpenMPI ===

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