ArrayTransformer.hpp File Reference

ParArray (MPI-aware array) and ArrayTransformer (ghost/halo communication). More...

#include "Array.hpp"
#include "DNDS/DeviceStorage.hpp"
#include "DNDS/Errors.hpp"
#include "IndexMapping.hpp"
#include "Profiling.hpp"
#include <utility>
#include "VectorUtils.hpp"

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Classes
class	DNDS::ParArray< T, _row_size, _row_max, _align >
	MPI-aware Array: adds a communicator, rank, and global index mapping. More...
class	DNDS::ArrayTransformer< T, _row_size, _row_max, _align >
	Ghost-communication engine for a father / son ParArray pair. More...
struct	DNDS::ArrayTransformerType< TArray >
	Type trait computing the ArrayTransformer type for a given Array type. More...

Namespaces
namespace	DNDS
	the host side operators are provided as implemented

Typedefs
using	DNDS::t_pLGlobalMapping = ssp< GlobalOffsetsMapping >
	Shared pointer to a GlobalOffsetsMapping (globally replicated).
using	DNDS::t_pLGhostMapping = ssp< OffsetAscendIndexMapping >
	Shared pointer to an OffsetAscendIndexMapping (per-rank ghost layout).
template<class TArray >
using	DNDS::ArrayTransformerType_t = typename ArrayTransformerType< TArray >::Type

Detailed Description

ParArray (MPI-aware array) and ArrayTransformer (ghost/halo communication).

Unit Test Coverage (test_ArrayTransformer.cpp, MPI np=1,2,4)

• ParArray: setMPI, Resize, createGlobalMapping, globalSize, AssertConsistent
• ArrayTransformer pull-based ghost: setFatherSon, createFatherGlobalMapping, createGhostMapping (pull), createMPITypes, pullOnce – layouts: TABLE_StaticFixed, TABLE_Fixed, CSR, std::array compound type
• Persistent pull: initPersistentPull, startPersistentPull, waitPersistentPull, clearPersistentPull (with father data update between pulls)
• BorrowGGIndexing: second array shares ghost mapping of first
• pushOnce: write to son, push back to father

Not Yet Tested

• Push-based createGhostMapping(pushingIndexLocal, pushStarts)
• Persistent push (initPersistentPush, startPersistentPush, etc.)
• clearMPITypes, clearGlobalMapping, clearGhostMapping (independent)
• reInitPersistentPullPush
• getFatherSonData(DeviceBackend), AssertDataType, setDataType

Definition in file ArrayTransformer.hpp.