toeplitz_seq.c File Reference

Contains sequential/openMP routines for Toeplitz algebra. More...

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Functions
int	stmm (double **V, int n, int m, double *T, int lambda, Flag flag_stgy)
	Perform the product of a Toeplitz matrix by a general matrix using the sliding window algorithm.
int	stbmm (double **V, int nrow, int m_cw, int m_rw, Block *tpltzblocks, int nb_blocks, int64_t idp, int local_V_size, Flag flag_stgy)
	Performs the multiplication of a symmetric, Toeplitz block-diagonal matrix, T, by an arbitrary matrix, V, distributed over processes in the generalized column-wise way.
int	gstbmm (double **V, int nrow, int m_cw, int m_rw, Block *tpltzblocks, int nb_blocks, int64_t idp, int local_V_size, int64_t *id0gap, int *lgap, int ngap, Flag flag_stgy)
	Performs the multiplication of a symmetric, Toeplitz block-diagonal matrix with gaps, T, by an arbitrary matrix, V, distributed over processes.
int	gstbmm0 (double **V, int nrow, int m, int m_rowwise, Block *tpltzblocks, int nb_blocks_local, int nb_blocks_all, int id0p, int local_V_size, int64_t *id0gap, int *lgap, int ngap, Flag flag_stgy)

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Detailed Description

Contains sequential/openMP routines for Toeplitz algebra.

version 1.1b, July 2012

Author:

Frederic Dauvergne

Project: Midapack library, ANR MIDAS'09 - Toeplitz Algebra module Purpose: Provide Toeplitz algebra tools suitable for Cosmic Microwave Background (CMB) data analysis.

Note:

Copyright (c) 2010-2012 APC CNRS Université Paris Diderot

This program is free software; you can redistribute it and/or modify it under the terms

of the GNU Lesser General Public License as published by the Free Software Foundation;

either version 3 of the License, or (at your option) any later version. This program is

distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even

the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this

program; if not, see http://www.gnu.org/licenses/lgpl.html

For more information about ANR MIDAS'09 project see :

http://www.apc.univ-paris7.fr/APC_CS/Recherche/Adamis/MIDAS09/index.html

ACKNOWLEDGMENT: This work has been supported in part by the French National Research

Agency (ANR) through COSINUS program (project MIDAS no. ANR-09-COSI-009).

Log: toeplitz*.c

Revision 1.0b 2012/05/07 Frederic Dauvergne (APC) Official release 1.0beta. The first installement of the library is the Toeplitz algebra module.

Revision 1.1b 2012/07/- Frederic Dauvergne (APC)

• mpi_stbmm allows now rowi-wise order per process datas and no-blocking communications.
• OMP improvment for optimal cpu time.
• bug fixed for OMP in the stmm_basic routine.
• distcorrmin is used to communicate only lambda-1 datas when it is needed.
• new reshaping routines using transformation functions in stmm. Thus, only one copy at most is needed.
• tpltz_init improvement using define_nfft and define_blocksize routines.
• add Block struture to define each Toeplitz block.
• add Flag structure and preprocessing parameters to define the computational strategy. All the flag parameters are then available directly from the API.

Definition in file toeplitz_seq.c.

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Function Documentation

int gstbmm0	(	double **	V,
		int	nrow,
		int	m,
		int	m_rowwise,
		Block *	tpltzblocks,
		int	nb_blocks_local,
		int	nb_blocks_all,
		int	id0p,
		int	local_V_size,
		int64_t *	id0gap,
		int *	lgap,
		int	ngap,
		Flag	flag_stgy
	)

Definition at line 186 of file toeplitz_seq.c.