A global linear system. More...

#include <CommCwipi.h>

Inheritance diagram for Nektar::LibUtilities::CommCwipi:

Public Member Functions
	CommCwipi (int narg, char *arg[])

virtual	~CommCwipi ()

Public Member Functions inherited from Nektar::LibUtilities::CommMpi
	CommMpi (int narg, char *arg[])

virtual	~CommMpi ()

MPI_Comm	GetComm ()

Public Member Functions inherited from Nektar::LibUtilities::Comm
	Comm (int narg, char *arg[])

virtual	~Comm ()

void	Finalise ()

int	GetSize ()
	Returns number of processes. More...

int	GetRank ()

const std::string &	GetType () const

void	Block ()
	Block execution until all processes reach this point. More...

NekDouble	Wtime ()
	Return the time in seconds. More...

template<class T >
void	Send (int pProc, T &pData)

template<class T >
void	Recv (int pProc, T &pData)

template<class T >
void	SendRecv (int pSendProc, T &pSendData, int pRecvProc, T &pRecvData)

template<class T >
void	SendRecvReplace (int pSendProc, int pRecvProc, T &pData)

template<class T >
void	AllReduce (T &pData, enum ReduceOperator pOp)

template<class T >
void	AlltoAll (T &pSendData, T &pRecvData)

template<class T1 , class T2 >
void	AlltoAllv (T1 &pSendData, T2 &pSendDataSizeMap, T2 &pSendDataOffsetMap, T1 &pRecvData, T2 &pRecvDataSizeMap, T2 &pRecvDataOffsetMap)

template<class T >
void	AllGather (T &pSendData, T &pRecvData)

template<class T >
void	AllGatherv (T &pSendData, T &pRecvData, Array< OneD, int > &pRecvDataSizeMap, Array< OneD, int > &pRecvDataOffsetMap)

template<class T >
void	AllGatherv (T &pRecvData, Array< OneD, int > &pRecvDataSizeMap, Array< OneD, int > &pRecvDataOffsetMap)

template<class T >
void	Bcast (T &data, int rootProc)

template<class T >
void	Exscan (T &pData, const enum ReduceOperator pOp, T &ans)

template<class T >
T	Gather (const int rootProc, T &val)

template<class T >
T	Scatter (const int rootProc, T &pData)

CommSharedPtr	CommCreateIf (int flag)
	If the flag is non-zero create a new communicator. More...

void	SplitComm (int pRows, int pColumns)
	Splits this communicator into a grid of size pRows*pColumns and creates row and column communicators. By default the communicator is a single row. More...

CommSharedPtr	GetRowComm ()
	Retrieve the row communicator to which this process belongs. More...

CommSharedPtr	GetColumnComm ()
	Retrieve the column communicator to which this process belongs. More...

bool	TreatAsRankZero (void)

bool	IsSerial (void)

bool	RemoveExistingFiles (void)

Static Public Member Functions
static CommSharedPtr	create (int narg, char *arg[])
	Creates an instance of this class. More...

Static Public Member Functions inherited from Nektar::LibUtilities::CommMpi
static CommSharedPtr	create (int narg, char *arg[])
	Creates an instance of this class. More...

Static Public Attributes
static std::string	className
	Name of class. More...

Static Public Attributes inherited from Nektar::LibUtilities::CommMpi
static std::string	className
	Name of class. More...

Protected Member Functions
virtual void	v_Finalise ()

Protected Member Functions inherited from Nektar::LibUtilities::CommMpi
	CommMpi (MPI_Comm pComm)

	CommMpi ()

virtual int	v_GetRank ()

virtual void	v_Block ()

virtual double	v_Wtime ()

virtual bool	v_TreatAsRankZero (void)

virtual bool	v_IsSerial (void)

virtual void	v_Send (void *buf, int count, CommDataType dt, int dest)

virtual void	v_Recv (void *buf, int count, CommDataType dt, int source)

virtual void	v_SendRecv (void sendbuf, int sendcount, CommDataType sendtype, int dest, void recvbuf, int recvcount, CommDataType recvtype, int source)

virtual void	v_SendRecvReplace (void *buf, int count, CommDataType dt, int pSendProc, int pRecvProc)

virtual void	v_AllReduce (void *buf, int count, CommDataType dt, enum ReduceOperator pOp)

virtual void	v_AlltoAll (void sendbuf, int sendcount, CommDataType sendtype, void recvbuf, int recvcount, CommDataType recvtype)

virtual void	v_AlltoAllv (void sendbuf, int sendcounts[], int sensdispls[], CommDataType sendtype, void recvbuf, int recvcounts[], int rdispls[], CommDataType recvtype)

virtual void	v_AllGather (void sendbuf, int sendcount, CommDataType sendtype, void recvbuf, int recvcount, CommDataType recvtype)

virtual void	v_AllGatherv (void sendbuf, int sendcount, CommDataType sendtype, void recvbuf, int recvcounts[], int rdispls[], CommDataType recvtype)

virtual void	v_AllGatherv (void *recvbuf, int recvcounts[], int rdispls[], CommDataType recvtype)

virtual void	v_Bcast (void *buffer, int count, CommDataType dt, int root)

virtual void	v_Exscan (Array< OneD, unsigned long long > &pData, const enum ReduceOperator pOp, Array< OneD, unsigned long long > &ans)

virtual void	v_Gather (void sendbuf, int sendcount, CommDataType sendtype, void recvbuf, int recvcount, CommDataType recvtype, int root)

virtual void	v_Scatter (void sendbuf, int sendcount, CommDataType sendtype, void recvbuf, int recvcount, CommDataType recvtype, int root)

virtual void	v_SplitComm (int pRows, int pColumns)

virtual CommSharedPtr	v_CommCreateIf (int flag)

Protected Member Functions inherited from Nektar::LibUtilities::Comm
	Comm ()

virtual bool	v_RemoveExistingFiles (void)

Additional Inherited Members
Protected Attributes inherited from Nektar::LibUtilities::CommMpi
MPI_Comm	m_comm

int	m_rank

Protected Attributes inherited from Nektar::LibUtilities::Comm
int	m_size
	Number of processes. More...

std::string	m_type
	Type of communication. More...

CommSharedPtr	m_commRow
	Row communicator. More...

CommSharedPtr	m_commColumn
	Column communicator. More...

Detailed Description

A global linear system.

Definition at line 55 of file CommCwipi.h.

Constructor & Destructor Documentation

◆ CommCwipi()

Nektar::LibUtilities::CommCwipi::CommCwipi	(	int	narg,
		char *	arg[]
	)

Definition at line 52 of file CommCwipi.cpp.

References ASSERTL0, Nektar::LibUtilities::CommMpi::m_comm, Nektar::LibUtilities::CommMpi::m_rank, Nektar::LibUtilities::Comm::m_size, and Nektar::LibUtilities::Comm::m_type.

                                           : CommMpi()
 {
     int init = 0;
     MPI_Initialized(&init);
     ASSERTL0(!init, "MPI has already been initialised.");
 
     int retval = MPI_Init(&narg, &arg);
     if (retval != MPI_SUCCESS)
     {
         ASSERTL0(false, "Failed to initialise MPI");
     }
 
     std::string localName = "";
     for (int i = 0; i < narg; ++i)
     {
         if (!std::strcmp(arg[i], "--cwipi"))
         {
             localName = arg[i + 1];
         }
     }
 
     MPI_Comm localComm;
     cwipi_init(MPI_COMM_WORLD, localName.c_str(), &localComm);
     m_comm = localComm;
 
     MPI_Comm_size(m_comm, &m_size);
     MPI_Comm_rank(m_comm, &m_rank);
 
     m_type = "Parallel MPI with CWIPI";
 }

◆ ~CommCwipi()

Nektar::LibUtilities::CommCwipi::~CommCwipi ( )

virtual

Definition at line 86 of file CommCwipi.cpp.

87 {

88 }

Member Function Documentation

◆ create()

static CommSharedPtr Nektar::LibUtilities::CommCwipi::create	(	int	narg,
		char *	arg[]
	)

inlinestatic

Creates an instance of this class.

Definition at line 60 of file CommCwipi.h.

References Nektar::MemoryManager< DataType >::AllocateSharedPtr().

     {
         return MemoryManager<CommCwipi>::AllocateSharedPtr(narg, arg);
     }

◆ v_Finalise()

void Nektar::LibUtilities::CommCwipi::v_Finalise ( )

protectedvirtual

Reimplemented from Nektar::LibUtilities::CommMpi.

Definition at line 93 of file CommCwipi.cpp.

References Nektar::LibUtilities::CommMpi::v_Finalise().

 {
     cwipi_finalize();
     CommMpi::v_Finalise();
 }

Member Data Documentation

◆ className

std::string Nektar::LibUtilities::CommCwipi::className

static

Initial value:

= GetCommFactory().RegisterCreatorFunction(

"CWIPI", CommCwipi::create, "Parallel communication using MPI with CWIPI.")

Name of class.

Definition at line 66 of file CommCwipi.h.

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Additional Inherited Members