Class TempLat::FFTWPlanner

template <size_t NDim>

ClassList > TempLat > FFTWPlanner

A class which partially implements FFTLibraryInterface , namely the getPlans parts. That is, here the calls to the FFTW planner are made.More...

#include <fftwplanner.h>

Inherits the following classes: TempLat::FFTLibraryInterface

Inherited by the following classes: TempLat::FFTWMemoryLayout

Public Functions

Type	Name
	FFTWPlanner ()
virtual std::shared_ptr< FFTPlanInterface< double, NDim > >	getPlans_double (const MPICartesianGroup & group, const FFTLayoutStruct< NDim > & layout) Create fully working plans, which must self-destruct in the PlanInterface's destructor. Use shared_ptr's.
virtual std::shared_ptr< FFTPlanInterface< float, NDim > >	getPlans_float (const MPICartesianGroup & group, const FFTLayoutStruct< NDim > & layout) Create fully working plans, which must self-destruct in the PlanInterface's destructor. Use shared_ptr's.
virtual void	setPlannerPatience (int level) If your library has different levels of patience for the planning phase, set it here.

Public Functions inherited from TempLat::FFTLibraryInterface

See TempLat::FFTLibraryInterface

Type	Name
	FFTLibraryInterface () = default
virtual FFTLayoutStruct< NDim >	computeLocalSizes (MPICartesianGroup group, device::IdxArray< NDim > nGridPoints, bool forbidTransposition=false) = 0 given an actual setup, return the description of the subarray of the global problem that this process holds.
virtual IntrinsicScales	getIntrinsicRescaleToGetUnnormalizedFFT (device::Idx nGridPoints) = 0 The lattice objects expect an unnormalized FFT, such as the one FFTW gives: applying once forward and then backward should return the input values multiplied by nGridPoints^nDimensions, i.e. the total number of values in the problem. If your library does not respect that, return the factor by which we must multiply the output values to obtain the unnormalized FFT. Return defaultIntrinsicScales (exact (double) 1) in order not to waste time, if your library does it like FFTW.
virtual device::Idx	getMaximumNumberOfDimensionsToDivide (device::Idx nDimensions) = 0 Return the number of dimensions over which the MPI processes can be distributed, given a problem of dimension nDimensions. FFTW can only divide in 1 dimension: the leading dimension. ParaFaFT can divide an N dimensional setup over the leading N - 1 dimensions.
virtual std::shared_ptr< FFTPlanInterface< double, NDim > >	getPlans_double (const MPICartesianGroup & group, const FFTLayoutStruct< NDim > & layout) = 0 Create fully working plans, which must self-destruct in the FFTPlanInterface 's destructor. Use shared_ptr's.
virtual std::shared_ptr< FFTPlanInterface< float, NDim > >	getPlans_float (const MPICartesianGroup & group, const FFTLayoutStruct< NDim > & layout) = 0 Create fully working plans, which must self-destruct in the FFTPlanInterface 's destructor. Use shared_ptr's. Since we use virtual methods here, we cannot use templates. Only one type of dynamic typing allowed by C++, either runtime (virtual) or compile time (template).
virtual void	setPlannerPatience (int level) = 0 If your library has different levels of patience for the planning phase, set it here.
virtual	~FFTLibraryInterface () = default

Detailed Description

Unit test: ctest -R test-fftwplanner

Public Functions Documentation

function FFTWPlanner

inline TempLat::FFTWPlanner::FFTWPlanner ()

function getPlans_double

Create fully working plans, which must self-destruct in the PlanInterface's destructor. Use shared_ptr's.

inline virtual std::shared_ptr< FFTPlanInterface < double, NDim > > TempLat::FFTWPlanner::getPlans_double (
    const MPICartesianGroup & group,
    const FFTLayoutStruct < NDim > & layout
)

Create fully working plans, which must self-destruct in the PlanInterface's destructor. Use shared_ptr's.

Implements TempLat::FFTLibraryInterface::getPlans_double

function getPlans_float

Create fully working plans, which must self-destruct in the PlanInterface's destructor. Use shared_ptr's.

inline virtual std::shared_ptr< FFTPlanInterface < float, NDim > > TempLat::FFTWPlanner::getPlans_float (
    const MPICartesianGroup & group,
    const FFTLayoutStruct < NDim > & layout
)

Implements TempLat::FFTLibraryInterface::getPlans_float

function setPlannerPatience

If your library has different levels of patience for the planning phase, set it here.

inline virtual void TempLat::FFTWPlanner::setPlannerPatience (
    int level
)

Implements TempLat::FFTLibraryInterface::setPlannerPatience

The documentation for this class was generated from the following file cosmolatticeweb/tmp/code_source/templat/include/TempLat/fft/external/fftw/fftwplanner.h