Haero no longer configures the OpenMP Kokkos backend for E3SM. #7945
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bartgol
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overfelt
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Dec 16, 2025
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I'm not sure how often/where haero is used throughout e3sm. Do we expect this to have an effect on the general nightlies? Or is this something that's only going to effect MAM4xx testing (if at all)? |
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This is something that only affects MAM4xx-related code, which is the only thing that uses haero. The change causes Kokkos within mam4xx to respect the CPU backend used by E3SM instead of always enabling the OpenMP backend. @ndkeen requested this change. |
tcclevenger
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Jan 8, 2026
@ndkeen noticed that builds with mam4xx had OpenMP enabled even when not configured by CIME. This PR updates the haero submodule to prevent OpenMP from being configured within a CIME build. [BFB]
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@ndkeen noticed that builds with mam4xx had OpenMP enabled even when not configured by CIME. This PR updates the
haerosubmodule to prevent OpenMP from being configured within a CIME build.