LineFFTArray Class Reference

Main Pencil FFT Chare Array. More...

#include <pencilfft.h>

Inheritance diagram for LineFFTArray:

Collaboration diagram for LineFFTArray:


Public Member Functions
	LineFFTArray (CkMigrateMessage *m)
	Entry Methods.
	LineFFTArray ()
	The default constructor.
	LineFFTArray (LineFFTInfo &info, int phase)
	the real constructor
	~LineFFTArray ()
void	receiveGridMessage (LineFFTGridMsg *msg)
	Receive data points to be fft'ed.
void	receiveFFTMessage (LineFFTMsg *msg)
	Receive an intermediate FFT message.
void	startFFT (int direction=FFTW_FORWARD)
	Start the 3D fft operation.
void	setNumGridMessages (int n, CkCallback &cb)
	Set the number of grid messages to expect.
Private Member Functions
void	sendFFTMessages (int dir)
	End Entry Methods.
void	sendGridMessages ()
	Send the grids back to the callers.
void	call_donecallback ()
	Call the application done callback.
Private Attributes
complex *	_line
	The fft points.
fftw_plan	_fwdplan
	Forward and backward fftw plans.
fftw_plan	_bwdplan
LineFFTInfo	_info
	The FFT info structure.
LineFFTPhase	_phase
int	_curGridMessages
	the current number of grid messages received so far
int	_curFFTMessages
	number of messssages received
int	_nElements
	number of fft points in this thick pencil
int	_fftSize
	size of the fft
int	_nFFTMessages
int	_nGridMessages
	Number of grid messages to expect before starting the FFT.
LineFFTGrid *	_gridList
	List of grids to send back to the the client.

Detailed Description

Main Pencil FFT Chare Array.

Definition at line 112 of file pencilfft.h.

Constructor & Destructor Documentation

LineFFTArray::LineFFTArray ( CkMigrateMessage * m ) [inline]

Entry Methods.

Add loadbalancing and migration later

Definition at line 171 of file pencilfft.h.

LineFFTArray::LineFFTArray ( ) [inline]

The default constructor.

Definition at line 176 of file pencilfft.h.

References _bwdplan, _curFFTMessages, _curGridMessages, _fwdplan, _line, and _nGridMessages.

LineFFTArray::LineFFTArray	(	LineFFTInfo &	info,
		int	phase
	)

the real constructor

main constructor

Definition at line 10 of file pencilfft.C.

References _bwdplan, _curFFTMessages, _curGridMessages, _fftSize, _fwdplan, _line, _nElements, _nFFTMessages, _nGridMessages, _phase, LineFFTInfo::grainX, LineFFTInfo::grainY, LineFFTInfo::grainZ, PHASE_X, PHASE_Y, PHASE_Z, LineFFTInfo::sizeX, LineFFTInfo::sizeY, and LineFFTInfo::sizeZ.

LineFFTArray::~LineFFTArray ( ) [inline]

Definition at line 190 of file pencilfft.h.

References _line.

Member Function Documentation

void LineFFTArray::receiveGridMessage ( LineFFTGridMsg * msg )

Receive data points to be fft'ed.

This will happen in the first and last phases

Definition at line 290 of file pencilfft.C.

References _curGridMessages, _gridList, _info, _line, _nElements, _nGridMessages, _phase, CkFreeMsg(), LineFFTGridMsg::data, LineFFTInfo::grainY, LineFFTInfo::grainZ, LineFFTGridMsg::grid, PHASE_X, ckcomplex::re, LineFFTInfo::sizeX, startFFT(), LineFFTGrid::x0, LineFFTGrid::xsize, LineFFTGrid::y0, LineFFTGrid::ysize, LineFFTGrid::z0, and LineFFTGrid::zsize.

void LineFFTArray::receiveFFTMessage ( LineFFTMsg * msg )

Receive an intermediate FFT message.

Definition at line 63 of file pencilfft.C.

References _curFFTMessages, _info, _line, _nElements, _nFFTMessages, _phase, CkFreeMsg(), LineFFTInfo::grainX, LineFFTInfo::grainY, LineFFTInfo::grainZ, PHASE_X, PHASE_Y, PHASE_Z, LineFFTInfo::sizeX, LineFFTInfo::sizeY, LineFFTInfo::sizeZ, and startFFT().

void LineFFTArray::startFFT ( int dir = FFTW_FORWARD )

Start the 3D fft operation.

This can be called externally or intiated when all the grid/fft messages have been received.

Definition at line 237 of file pencilfft.C.

References _bwdplan, _fftSize, _fwdplan, _info, _line, _nElements, _phase, call_donecallback(), ckcomplex::im, LineFFTInfo::normalize, PHASE_X, PHASE_Z, ckcomplex::re, sendFFTMessages(), LineFFTInfo::sizeX, LineFFTInfo::sizeY, and LineFFTInfo::sizeZ.

Referenced by receiveFFTMessage(), and receiveGridMessage().

void LineFFTArray::setNumGridMessages	(	int	n,
		CkCallback &	cb
	)			`[inline]`

Set the number of grid messages to expect.

Definition at line 215 of file pencilfft.h.

References _gridList, _nGridMessages, and CkReduction::sum_int.

void LineFFTArray::sendFFTMessages ( int dir ) [private]

End Entry Methods.

Send the fft messages for the next few phases.

Send the fft messages for the next few phases

Entry constructs a LineFFTMsg by splitting the thick pencil into chunks and then sends a chunk to a the neighbor intersecting on that chunk. The message is always formatted in the XYZ order

Definition at line 137 of file pencilfft.C.

References _info, _line, _nElements, _nFFTMessages, _phase, Converse::CkMyPe(), LineFFTInfo::grainX, LineFFTInfo::grainY, LineFFTInfo::grainZ, msg, PHASE_X, PHASE_Y, PHASE_Z, size, LineFFTInfo::sizeX, LineFFTInfo::sizeY, LineFFTInfo::sizeZ, LineFFTInfo::xProxy, LineFFTInfo::yProxy, and LineFFTInfo::zProxy.