dealspectrum::Permutator Class Reference

#include <permutation.h>

Public Member Functions
	Permutator (MPI_Comm const &comm, Setup &s)
template<typename MAPPING, typename FFTW>
void	init (MAPPING &MAP, FFTW &FFT)
virtual	~Permutator ()
void	ipermute (double *source, double *target)
void	iwait ()

Detailed Description

Class for permuting dofs from cellwise-sfc-order to lexicographical order such that processes own complete rows (2D) or complete planes (3D) as specified by FFTW. To be able to process the resulting array by FFTW, we on the fly insert padding.

This class expects an input array as described in the interpolation class and produces an array of the format which comply the requirements described in the FFTW wrapper class.

Constructor & Destructor Documentation

Permutator()

dealspectrum::Permutator::Permutator ( MPI_Comm const & comm, Setup & s )

inline

Constructor

Parameters

s	DEAL.SPECTRUM setup

~Permutator()

virtual dealspectrum::Permutator::~Permutator ( )

inlinevirtual

Destructor

Member Function Documentation

init()

template<typename MAPPING, typename FFTW>

void dealspectrum::Permutator::init ( MAPPING & MAP, FFTW & FFT )

inline

Initialize all data structures needed for communication

Parameters

MAP	reference to bijection function
FFT	reference to fftw-wrapper

ipermute()

void dealspectrum::Permutator::ipermute ( double * source, double * target )

inline

Start (nonblocking) permutation:

• write data into buffers for each process and send away data right away
• perform permutation directly on local process

Parameters

source	source array to be permuted...
target	...into target array

iwait()

void dealspectrum::Permutator::iwait ( )

inline

Finish (nonblocking) permutation: wait and write received data from buffer into target array

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

• include/exadg/postprocessor/spectral_analysis/permutation.h