Remove NVIDIA UVM and FRONTIER_UNIFIED infrastructure#2
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sbryngelson merged 2 commits intomainfrom Apr 4, 2026
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- Remove nv_uvm_out_of_core, nv_uvm_igr_temps_on_gpu, nv_uvm_pref_gpu variables from declarations, defaults, namelist, MPI broadcasts - Remove s_check_inputs_nvidia_uvm subroutine from m_checker - Remove PREFER_GPU macro and all 15 call sites - Remove FRONTIER_UNIFIED conditional paths from m_time_steppers (hipfort pool allocation, pointer remapping, pinned host arrays) - Remove FIGR_Unified CMake option and GH-200 unified memory flags - Remove --unified CLI flag from FigrConfig - Keep standard allocatable GPU path throughout
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Summary
Remove all NVIDIA Unified Virtual Memory (UVM) and Frontier unified memory infrastructure.
Removed
nv_uvm_out_of_core,nv_uvm_igr_temps_on_gpu,nv_uvm_pref_gpuvariables (declarations, defaults, namelist, MPI broadcasts, checker)nv_uvm_temp_on_gpuconditional logic inm_igr.fpp(always use GPU path)nv_uvm_out_of_coreconditional logic inm_time_steppers.fpp(always use standard path)PREFER_GPUmacro replaced with no-opFRONTIER_UNIFIED#ifdef blocks inm_time_steppers.fpp(hip memory pool allocation)FIGR_UnifiedCMake option and-DFRONTIER_UNIFIEDcompile definitionsunifiedfield fromFigrConfigTest plan