Fab2D storage allocator, selectable at compile time. More...

#include <cstddef>
#include <memory>

Include dependency graph for allocator.hpp:

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Classes
struct	pops::ArenaStats
	ManagedArena pool statistics: hits/misses/fences and retained bytes. More...

Namespaces
namespace	pops

Typedefs
template<class T >
using	pops::fab_allocator = std::allocator< T >

template<class T >
using	pops::comm_allocator = std::allocator< T >

Functions
ArenaStats	pops::arena_stats ()

Detailed Description

Fab2D storage allocator, selectable at compile time.

Two strategies depending on the build:

Kokkos (POPS_HAS_KOKKOS): ManagedAllocator<T> backed by ManagedArena (a pool of blocks in Kokkos::SharedSpace unified memory). std::vector<T, ManagedAllocator<T>> keeps value semantics (deep copy into a new managed allocation).
Pure CPU: std::allocator<T> – byte-identical to the old behavior.

fab_allocator<T> is the canonical alias to use; do not instantiate ManagedAllocator directly in numerical code.

Async safety INVARIANT: a freed block goes into pending_ (ManagedArena) and is only reused after the next batched Kokkos::fence. This reproduces the implicit barrier of cudaFree in a portable way. See ManagedArena::deallocate and ManagedArena::allocate.

include/pops/core/foundation/allocator.hpp File Reference¶

Classes

Namespaces

Typedefs

Functions

Detailed Description