ROOT::Minuit2::MPIProcess Class Reference

Description

Definition at line 46 of file MPIProcess.h.

Public Member Functions
	MPIProcess (unsigned int nelements, unsigned int indexComm)
	~MPIProcess ()
unsigned int	EndElementIndex () const
unsigned int	GetMPIRank () const
unsigned int	GetMPISize () const
unsigned int	NumElements4Job (unsigned int rank) const
unsigned int	NumElements4JobIn () const
unsigned int	NumElements4JobOut () const
unsigned int	StartElementIndex () const
void	SumReduce (const double &sub, double &total)
bool	SyncSymMatrixOffDiagonal (ROOT::Minuit2::MnAlgebraicSymMatrix &mnmatrix)
bool	SyncVector (ROOT::Minuit2::MnAlgebraicVector &mnvector)

Static Public Member Functions
static unsigned int	GetMPIGlobalRank ()
static unsigned int	GetMPIGlobalSize ()
static bool	SetCartDimension (unsigned int dimX, unsigned int dimY)
static bool	SetDoFirstMPICall (bool doFirstMPICall=true)
static void	StartMPI ()
static void	TerminateMPI ()

Private Attributes
unsigned int	fNelements
unsigned int	fNumElements4JobIn
unsigned int	fNumElements4JobOut
unsigned int	fRank
unsigned int	fSize

Static Private Attributes
static unsigned int	fgCartDimension
static unsigned int	fgCartSizeX
static unsigned int	fgCartSizeY
static unsigned int	fgGlobalRank
static unsigned int	fgGlobalSize
static bool	fgNewCart

Constructor & Destructor Documentation

MPIProcess()

ROOT::Minuit2::MPIProcess::MPIProcess	(	unsigned int	nelements,
		unsigned int	indexComm
	)

~MPIProcess()

ROOT::Minuit2::MPIProcess::~MPIProcess

(

)

Member Function Documentation

EndElementIndex()

unsigned int ROOT::Minuit2::MPIProcess::EndElementIndex ( ) const

inline

Definition at line 61 of file MPIProcess.h.

      { return StartElementIndex()+NumElements4Job(fRank); }

References fRank, NumElements4Job(), and StartElementIndex().

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GetMPIGlobalRank()

static unsigned int ROOT::Minuit2::MPIProcess::GetMPIGlobalRank ( )

inlinestatic

Definition at line 70 of file MPIProcess.h.

{ StartMPI(); return fgGlobalRank; }

References fgGlobalRank, and StartMPI().

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GetMPIGlobalSize()

static unsigned int ROOT::Minuit2::MPIProcess::GetMPIGlobalSize ( )

inlinestatic

Definition at line 71 of file MPIProcess.h.

{ StartMPI(); return fgGlobalSize; }

References fgGlobalSize, and StartMPI().

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GetMPIRank()

unsigned int ROOT::Minuit2::MPIProcess::GetMPIRank ( ) const

inline

Definition at line 65 of file MPIProcess.h.

{ return fRank; }

References fRank.

GetMPISize()

unsigned int ROOT::Minuit2::MPIProcess::GetMPISize ( ) const

inline

Definition at line 64 of file MPIProcess.h.

{ return fSize; }

References fSize.

NumElements4Job()

unsigned int ROOT::Minuit2::MPIProcess::NumElements4Job ( unsigned int  rank ) const

inline

Definition at line 54 of file MPIProcess.h.

      { return NumElements4JobIn()+((rank<NumElements4JobOut()) ? 1 : 0); }

References NumElements4JobIn(), and NumElements4JobOut().

Referenced by EndElementIndex(), and StartElementIndex().

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NumElements4JobIn()

unsigned int ROOT::Minuit2::MPIProcess::NumElements4JobIn ( ) const

inline

Definition at line 51 of file MPIProcess.h.

{ return fNumElements4JobIn; }

References fNumElements4JobIn.

Referenced by NumElements4Job().

NumElements4JobOut()

unsigned int ROOT::Minuit2::MPIProcess::NumElements4JobOut ( ) const

inline

Definition at line 52 of file MPIProcess.h.

{ return fNumElements4JobOut; }

References fNumElements4JobOut.

Referenced by NumElements4Job(), and StartElementIndex().

SetCartDimension()

static bool ROOT::Minuit2::MPIProcess::SetCartDimension ( unsigned int  dimX, unsigned int  dimY  )

static

SetDoFirstMPICall()

static bool ROOT::Minuit2::MPIProcess::SetDoFirstMPICall ( bool  doFirstMPICall = true )

static

StartElementIndex()

unsigned int ROOT::Minuit2::MPIProcess::StartElementIndex ( ) const

inline

Definition at line 57 of file MPIProcess.h.

      { return ((fRank<NumElements4JobOut()) ? (fRank*NumElements4Job(fRank)) :
                (fNelements-(fSize-fRank)*NumElements4Job(fRank))); }

References fNelements, fRank, fSize, NumElements4Job(), and NumElements4JobOut().

Referenced by EndElementIndex().

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StartMPI()

static void ROOT::Minuit2::MPIProcess::StartMPI ( )

inlinestatic

Definition at line 72 of file MPIProcess.h.

                                    {
#ifdef MPIPROC
         if (!(MPI::Is_initialized())) {
            MPI::Init();
            std::cout << "Info --> MPIProcess::StartMPI: Start MPI on #"
                      << MPI::COMM_WORLD.Get_rank() << " processor"
                      << std::endl;
         }
         fgGlobalSize = MPI::COMM_WORLD.Get_size();
         fgGlobalRank = MPI::COMM_WORLD.Get_rank();
#endif
      }

References fgGlobalRank, and fgGlobalSize.

Referenced by GetMPIGlobalRank(), and GetMPIGlobalSize().

SumReduce()

void ROOT::Minuit2::MPIProcess::SumReduce ( const double &  sub, double &  total  )

inline

Definition at line 100 of file MPIProcess.h.

                                                              {
         total = sub;
 
#ifdef MPIPROC
         if (fSize>1) {
            fgCommunicator->Allreduce(&sub,&total,1,MPI::DOUBLE,MPI::SUM);
         }
#endif
      }

References fSize.

SyncSymMatrixOffDiagonal()

bool ROOT::Minuit2::MPIProcess::SyncSymMatrixOffDiagonal

(

ROOT::Minuit2::MnAlgebraicSymMatrix &

mnmatrix

)

SyncVector()

bool ROOT::Minuit2::MPIProcess::SyncVector

(

ROOT::Minuit2::MnAlgebraicVector &

mnvector

)

TerminateMPI()

static void ROOT::Minuit2::MPIProcess::TerminateMPI ( )

inlinestatic

Definition at line 85 of file MPIProcess.h.

                                 {
#ifdef MPIPROC
         if (fgCommunicators[0]!=0 && fgCommunicators[1]!=0) {
            delete fgCommunicators[0]; fgCommunicators[0] = 0; fgIndecesComm[0] = 0;
            delete fgCommunicators[1]; fgCommunicators[1] = 0; fgIndecesComm[1] = 0;
         }
 
         MPITerminate();
 
#endif
      }

Member Data Documentation

fgCartDimension

unsigned int ROOT::Minuit2::MPIProcess::fgCartDimension

staticprivate

Definition at line 126 of file MPIProcess.h.

fgCartSizeX

unsigned int ROOT::Minuit2::MPIProcess::fgCartSizeX

staticprivate

Definition at line 124 of file MPIProcess.h.

fgCartSizeY

unsigned int ROOT::Minuit2::MPIProcess::fgCartSizeY

staticprivate

Definition at line 125 of file MPIProcess.h.

fgGlobalRank

unsigned int ROOT::Minuit2::MPIProcess::fgGlobalRank

staticprivate

Definition at line 122 of file MPIProcess.h.

Referenced by GetMPIGlobalRank(), and StartMPI().

fgGlobalSize

unsigned int ROOT::Minuit2::MPIProcess::fgGlobalSize

staticprivate

Definition at line 121 of file MPIProcess.h.

Referenced by GetMPIGlobalSize(), and StartMPI().

fgNewCart

bool ROOT::Minuit2::MPIProcess::fgNewCart

staticprivate

Definition at line 127 of file MPIProcess.h.

fNelements

unsigned int ROOT::Minuit2::MPIProcess::fNelements

private

Definition at line 117 of file MPIProcess.h.

Referenced by StartElementIndex().

fNumElements4JobIn

unsigned int ROOT::Minuit2::MPIProcess::fNumElements4JobIn

private

Definition at line 129 of file MPIProcess.h.

Referenced by NumElements4JobIn().

fNumElements4JobOut

unsigned int ROOT::Minuit2::MPIProcess::fNumElements4JobOut

private

Definition at line 130 of file MPIProcess.h.

Referenced by NumElements4JobOut().

fRank

unsigned int ROOT::Minuit2::MPIProcess::fRank

private

Definition at line 119 of file MPIProcess.h.

Referenced by EndElementIndex(), GetMPIRank(), and StartElementIndex().

fSize

unsigned int ROOT::Minuit2::MPIProcess::fSize

private

Definition at line 118 of file MPIProcess.h.

Referenced by GetMPISize(), StartElementIndex(), and SumReduce().

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

• /home/build/builds/o5h8MZZm/0/mlz/bornagain/Fit/3rdparty/RootMinimizers/Minuit2/MPIProcess.h