NeighborAcquirer Class Reference

Static Public Member Functions
static std::tuple< std::vector< CommunicationPartner >, std::vector< CommunicationPartner > >	acquireNeighbors (const std::array< double, 3 > &globalDomainLength, HaloRegion *ownRegion, std::vector< HaloRegion > &desiredRegions, const MPI_Comm &comm, bool excludeOwnRank=true)
static std::vector< CommunicationPartner >	squeezePartners (const std::vector< CommunicationPartner > &partners)

Friends
class	NeighborAcquirerTest

Member Function Documentation

acquireNeighbors()

std::tuple< std::vector< CommunicationPartner >, std::vector< CommunicationPartner > > NeighborAcquirer::acquireNeighbors ( const std::array< double, 3 > &  globalDomainLength, HaloRegion *  ownRegion, std::vector< HaloRegion > &  desiredRegions, const MPI_Comm &  comm, bool  excludeOwnRank = true  )

static

Acquire the needed neighbors defined through the specific desired HaloRegions.

Parameters

domain	The domain object.
ownRegion	The region of the own process.
desiredRegions	This is a vector of the desired regions. Partners are generated if at least parts of the desiredRegions lie outside of ownRegion.
partners01	Vector of communication partners that contain domains outside of ownRegion.
partners02	Vector of communication partners that contain domains inside of ownRegion.
comm	the mpi communicator
excludeOwnRank	Specifies to not include CommunicationPartners communicating with the own rank.

Returns

A tuple of 2 vectors: The first vector represents the partners NOT owning the haloDomain, while the second vector will own the particles.

We now receive as many regions as we previously determined that we will receive. For that we keep track, how many regions we received and increase this according to the number of regions received per MPI operation.

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The documentation for this class was generated from the following files:

• src/parallel/NeighborAcquirer.h
• src/parallel/NeighborAcquirer.cpp