85 lines
3.6 KiB
C
85 lines
3.6 KiB
C
/*
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* This file is part of libsharp.
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*
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* libsharp is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* libsharp is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with libsharp; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* libsharp is being developed at the Max-Planck-Institut fuer Astrophysik
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* and financially supported by the Deutsches Zentrum fuer Luft- und Raumfahrt
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* (DLR).
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*/
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/*! \file sharp_mpi.h
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* Interface for the spherical transform library with MPI support.
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*
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* Copyright (C) 2011,2012 Max-Planck-Society
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* \author Martin Reinecke
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*/
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#ifndef PLANCK_SHARP_MPI_H
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#define PLANCK_SHARP_MPI_H
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#include <mpi.h>
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#include "sharp.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*! Performs an MPI parallel libsharp SHT job. The interface deliberately does
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not use the C99 "complex" data type, in order to be callable from C.
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\param comm the MPI communicator to be used for this SHT
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\param type the type of SHT
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\param spin the spin of the quantities to be transformed
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\param add_output if 0, the output arrays will be overwritten,
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else the result will be added to the output arrays.
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\param alm contains pointers to the a_lm coefficients. If \a spin==0,
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alm[0] points to the a_lm of the first SHT, alm[1] to those of the second
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etc. If \a spin>0, alm[0] and alm[1] point to the a_lm of the first SHT,
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alm[2] and alm[3] to those of the second, etc. The exact data type of \a alm
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depends on the \a dp parameter.
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\param map contains pointers to the maps. If \a spin==0,
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map[0] points to the map of the first SHT, map[1] to that of the second
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etc. If \a spin>0, map[0] and map[1] point to the maps of the first SHT,
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map[2] and map[3] to those of the second, etc. The exact data type of \a map
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depends on the \a dp parameter.
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\param geom_info A \c sharp_geom_info object compatible with the provided
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\a map arrays. The total map geometry is the union of all \a geom_info
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objects over the participating MPI tasks.
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\param alm_info A \c sharp_alm_info object compatible with the provided
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\a alm arrays. All \c m values from 0 to some \c mmax<=lmax must be present
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exactly once in the union of all \a alm_info objects over the participating
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MPI tasks.
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\param ntrans the number of simultaneous SHTs
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\param dp if 0, the \a alm is expected to have the type "complex float **"
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and \a map is expected to have the type "float **"; otherwise the expected
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types are "complex double **" and "double **", respectively.
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\param nv Internally used SHT parameter. Set to 0 unless you know what you are
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doing.
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\param time If not NULL, the wall clock time required for this SHT
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(in seconds)will be written here.
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\param opcnt If not NULL, a conservative estimate of the total floating point
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operation count for this SHT will be written here. */
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void sharp_execute_mpi (MPI_Comm comm, sharp_jobtype type, int spin,
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int add_output, void *alm, void *map, const sharp_geom_info *geom_info,
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const sharp_alm_info *alm_info, int ntrans, int dp, int nv, double *time,
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unsigned long long *opcnt);
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#ifdef __cplusplus
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}
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#endif
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#endif
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