E3SM-Project / E3SM-Project/HOMMEXX

Meaningful platform/architecture-dependent MPI run lines for tests

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Fortran
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Description

On GPU, prtcB-flat-r3_cxx_vs_f90 is still not BFB with the Fortran on CPU. Differences are strongly suggestive of error from finite precision. Could be a gfortran CPU vs nvcc GPU thing, or could be deeper. A relevant observation is that on CPU with OpenMP, the GPU code path is BFB with the Fortran one. We can't rule out needing to make GPU-specific tests.

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