53#ifndef MUELU_INTERFACEAGGREGATIONALGORITHM_DEF_HPP_
54#define MUELU_INTERFACEAGGREGATIONALGORITHM_DEF_HPP_
56#include <Teuchos_Comm.hpp>
57#include <Teuchos_CommHelpers.hpp>
59#include <Xpetra_Vector.hpp>
61#include "MueLu_InterfaceAggregationAlgorithm.hpp"
65#include "MueLu_Aggregates.hpp"
71template <
class LocalOrdinal,
class GlobalOrdinal,
class Node>
76template <
class LocalOrdinal,
class GlobalOrdinal,
class Node>
78 Monitor m(*
this,
"BuildAggregates");
81 const int myRank = graph.
GetComm()->getRank();
84 Teuchos::ArrayRCP<LocalOrdinal> vertex2AggId = aggregates.
GetVertex2AggId()->getDataNonConst(0);
85 Teuchos::ArrayRCP<LocalOrdinal> procWinner = aggregates.
GetProcWinner()->getDataNonConst(0);
91 for(
int iNode1 = 0; iNode1 < nRows; ++iNode1) {
96 int aggIndex = numLocalAggregates;
97 std::vector<int> aggList;
98 aggList.push_back(iNode1);
101 for(
int j = 0; j < neighOfINode.size(); ++j) {
102 LO neigh = neighOfINode[j];
106 aggList.push_back(neigh);
111 for (
size_t k = 0; k < aggList.size(); k++) {
113 vertex2AggId[aggList[k]] = aggIndex;
114 procWinner[aggList[k]] = myRank;
116 ++numLocalAggregates;
117 numNonAggregatedNodes -= aggList.size();
MueLu::DefaultLocalOrdinal LocalOrdinal
Container class for aggregation information.
void SetIsRoot(LO i, bool value=true)
Set root node information.
const RCP< LOMultiVector > & GetVertex2AggId() const
Returns constant vector that maps local node IDs to local aggregates IDs.
const RCP< LOVector > & GetProcWinner() const
Returns constant vector that maps local node IDs to owning processor IDs.
LO GetNumAggregates() const
returns the number of aggregates of the current processor. Note: could/should be renamed to GetNumLoc...
void SetNumAggregates(LO nAggregates)
Set number of local aggregates on current processor.
MueLu representation of a graph.
virtual const RCP< const Teuchos::Comm< int > > GetComm() const =0
virtual bool isLocalNeighborVertex(LocalOrdinal v) const =0
Return true if vertex with local id 'v' is on current process.
virtual Teuchos::ArrayView< const LocalOrdinal > getNeighborVertices(LocalOrdinal v) const =0
Return the list of vertices adjacent to the vertex 'v'.
virtual size_t GetNodeNumVertices() const =0
Return number of vertices owned by the calling node.
void BuildAggregates(Teuchos::ParameterList const ¶ms, GraphBase const &graph, Aggregates &aggregates, std::vector< unsigned > &aggStat, LO &numNonAggregatedNodes) const
Local aggregation.
InterfaceAggregationAlgorithm(RCP< const FactoryBase > const &graphFact=Teuchos::null)
Constructor.
Timer to be used in non-factories.
Namespace for MueLu classes and methods.