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Real questions. Useful conversations. Find the people who know your stack.
Decide whether to adopt Fortran coarrays, MPI, or OpenMP for distributed‑memory parallelism. Compare support, syntax, performance, and migration effort, and see a concrete coarray example that computes π.
Decide when to use Fortran coarrays instead of MPI for distributed-memory parallel code, with a minimal example and compiler validation steps.
Learn how to build OpenFOAM with Spack across gcc/clang and OpenMPI/MPICH, verify each install, and recover from common build failures.