cc_staff
127
edits
OpenFOAM: Difference between revisions
Jump to navigation
Jump to search
Marked this version for translation
No edit summary |
(Marked this version for translation) |
||
| Line 70: | Line 70: | ||
Mesh preparation (<code>blockMesh</code>) may be fast enough to be done at the command line (see [[Running jobs]]). The solver (<code>icoFoam</code> and others) is usually the most expensive step and should always be submitted as a Slurm job except in very small test cases or tutorials. | Mesh preparation (<code>blockMesh</code>) may be fast enough to be done at the command line (see [[Running jobs]]). The solver (<code>icoFoam</code> and others) is usually the most expensive step and should always be submitted as a Slurm job except in very small test cases or tutorials. | ||
=== Segfaults with OpenMPI 3.1.2 === | === Segfaults with OpenMPI 3.1.2 === <!--T:16--> | ||
<!--T:17--> | |||
Users have reported random segfaults on Cedar when using OpenFOAM versions compiled for OpenMPI 3.1.2 in single-node jobs (shared memory communication). These issues seem not to happen with other versions of OpenMPI. If you experience such problems, first try to use an OpenMPI 2.1.1-based toolchain. For example: | Users have reported random segfaults on Cedar when using OpenFOAM versions compiled for OpenMPI 3.1.2 in single-node jobs (shared memory communication). These issues seem not to happen with other versions of OpenMPI. If you experience such problems, first try to use an OpenMPI 2.1.1-based toolchain. For example: | ||
<!--T:18--> | |||
{{Commands | {{Commands | ||
|module load gcc/5.4.0 | |module load gcc/5.4.0 | ||