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cs_gradient_priv.h
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1#ifndef __CS_GRADIENT_CUDA_H__
2#define __CS_GRADIENT_CUDA_H__
3
4/*============================================================================
5 * Private functions for gradient reconstruction.
6 *============================================================================*/
7
8/*
9 This file is part of code_saturne, a general-purpose CFD tool.
10
11 Copyright (C) 1998-2023 EDF S.A.
12
13 This program is free software; you can redistribute it and/or modify it under
14 the terms of the GNU General Public License as published by the Free Software
15 Foundation; either version 2 of the License, or (at your option) any later
16 version.
17
18 This program is distributed in the hope that it will be useful, but WITHOUT
19 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
20 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
21 details.
22
23 You should have received a copy of the GNU General Public License along with
24 this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
25 Street, Fifth Floor, Boston, MA 02110-1301, USA.
26*/
27
28/*----------------------------------------------------------------------------*/
29
30/*----------------------------------------------------------------------------
31 * Local headers
32 *----------------------------------------------------------------------------*/
33
34#include "cs_base.h"
35#include "cs_base_accel.h"
36#include "cs_halo.h"
38#include "cs_mesh.h"
39#include "cs_mesh_quantities.h"
40
41/*----------------------------------------------------------------------------*/
42
44
46
47/*============================================================================
48 * Macro definitions
49 *============================================================================*/
50
51/*=============================================================================
52 * Local type definitions
53 *============================================================================*/
54
55/* Type for symmetric least-squares covariance matrices
56 as they are adimensional, single-precision should be usable here */
57
58typedef cs_real_t cs_cocg_t;
59typedef cs_real_t cs_cocg_6_t[6];
60typedef cs_real_t cs_cocg_33_t[3][3];
61
62/*============================================================================
63 * Global variables
64 *============================================================================*/
65
66/*=============================================================================
67 * Semi-private function prototypes
68 *============================================================================*/
69
70#if defined(HAVE_CUDA)
71
72/*----------------------------------------------------------------------------
73 * Compute cell gradient using least-squares reconstruction for non-orthogonal
74 * meshes (nswrgp > 1).
75 *
76 * Optionally, a volume force generating a hydrostatic pressure component
77 * may be accounted for.
78 *
79 * cocg is computed to account for variable B.C.'s (flux).
80 *
81 * parameters:
82 * m <-- pointer to associated mesh structure
83 * fvq <-- pointer to associated finite volume quantities
84 * halo_type <-- halo type (extended or not)
85 * recompute_cocg <-- flag to recompute cocg
86 * inc <-- if 0, solve on increment; 1 otherwise
87 * coefap <-- B.C. coefficients for boundary face normals
88 * coefbp <-- B.C. coefficients for boundary face normals
89 * pvar <-- variable
90 * c_weight <-- weighted gradient coefficient variable,
91 * or NULL
92 * cocg <-> associated cell covariance array (on device)
93 * cocgb <-> saved boundary cell covariance array (on device)
94 * grad <-> gradient of pvar (halo prepared for periodicity
95 * of rotation)
96 *----------------------------------------------------------------------------*/
97
98void
99cs_gradient_scalar_lsq_cuda(const cs_mesh_t *m,
100 const cs_mesh_quantities_t *fvq,
101 cs_halo_type_t halo_type,
102 bool recompute_cocg,
103 cs_real_t inc,
104 const cs_real_t coefap[],
105 const cs_real_t coefbp[],
106 const cs_real_t pvar[],
107 const cs_real_t *restrict c_weight,
108 cs_cocg_6_t *restrict cocg,
109 cs_cocg_6_t *restrict cocgb,
110 cs_real_3_t *restrict grad);
111
112#endif /* defined(HAVE_CUDA) */
113
115
116/*----------------------------------------------------------------------------*/
117
119
120#endif /* __CS_GRADIENT_CUDA_H__ */
#define restrict
Definition cs_defs.h:139
#define BEGIN_C_DECLS
Definition cs_defs.h:509
double cs_real_t
Floating-point value.
Definition cs_defs.h:319
#define END_C_DECLS
Definition cs_defs.h:510
cs_real_t cs_real_3_t[3]
vector of 3 floating-point values
Definition cs_defs.h:332
cs_halo_type_t
Definition cs_halo.h:56
Definition cs_mesh_quantities.h:92
Definition cs_mesh.h:85