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… resource concept RMM 26.06 removes rmm::mr::device_memory_resource and adopts CCCL-native memory resource concepts. This migrates all cuCascade resource classes: - null_device_memory_resource: replaced virtual override with CCCL concept methods (allocate/deallocate with cuda::stream_ref, allocate_sync, deallocate_sync, operator==, get_property). - numa_region_pinned_host_allocator: same pattern. - fixed_size_host_memory_resource: same pattern. - reservation_aware_resource_adaptor: same pattern. - small_pinned_host_memory_resource: same pattern. - memory_space: unique_ptr<device_memory_resource> replaced with cuda::mr::any_resource<cuda::mr::device_accessible> for owning storage; get_default_allocator returns device_async_resource_ref from any_resource. - memory_reservation.hpp: moved template bodies out-of-line to avoid incomplete-type errors with memory_space forward declaration. - common.hpp/cpp: updated factory typedefs and pool_memory_resource usage (no longer a template in 26.06). - pool_memory_resource upstream passed as device_async_resource_ref. - Test utilities updated for new resource concept.
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This was referenced Apr 3, 2026
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/ok to test a852c20 |
# Conflicts: # src/data/representation_converter.cpp # src/memory/memory_space.cpp # test/utils/cudf_test_utils.cpp
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Summary
rmm::mr::device_memory_resourcevirtual inheritance to the CCCL-native resource concept (allocate/deallocatewithcuda::stream_ref,allocate_sync/deallocate_sync,operator==,get_property).unique_ptr<device_memory_resource>owning storage withcuda::mr::any_resource<cuda::mr::device_accessible>.memory_space::get_default_allocator()to returndevice_async_resource_reffrom theany_resource.pool_memory_resourceusage (no longer a template in RMM 26.06; upstream passed asdevice_async_resource_ref).memory_reservation.hpptemplate bodies out-of-line to avoid incomplete-type errors.Affected classes
null_device_memory_resourcenuma_region_pinned_host_allocatorfixed_size_host_memory_resourcereservation_aware_resource_adaptorsmall_pinned_host_memory_resourcememory_spaceNotes
cuda::stream_ref{}deprecation warnings remain inallocate_sync/deallocate_syncimplementations (non-blocking, cuCascade doesn't use-Werror).