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OpenACC port of halo exchanges #1355

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OpenACC port of halo exchanges #1355

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84aa45b
Enable GPU-aware halo exchanges via OpenACC directives
Mar 17, 2026
b0ce630
New namelist option to switch on or off GPU-aware MPI halo exchanges
abishekg7 Mar 17, 2026
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5 changes: 5 additions & 0 deletions src/core_atmosphere/Registry.xml
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Expand Up @@ -443,6 +443,11 @@
units="-"
description="Method to use for exchanging halos"
possible_values="`mpas_dmpar', `mpas_halo'"/>

<nml_option name="config_gpu_aware_mpi" type="logical" default_value="false"
units="-"
description="Whether to use GPU-aware MPI for halo exchanges. GPU-aware MPI is only implemented for config_halo_exch_method='mpas_halo'"
possible_values=".true. or .false."/>
</nml_record>

#ifdef MPAS_USE_MUSICA
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