MFEM v4.7.0
Finite element discretization library
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grad_by_nodes.cpp
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1// Copyright (c) 2010-2024, Lawrence Livermore National Security, LLC. Produced
2// at the Lawrence Livermore National Laboratory. All Rights reserved. See files
3// LICENSE and NOTICE for details. LLNL-CODE-806117.
4//
5// This file is part of the MFEM library. For more information and source code
6// availability visit https://mfem.org.
7//
8// MFEM is free software; you can redistribute it and/or modify it under the
9// terms of the BSD-3 license. We welcome feedback and contributions, see file
10// CONTRIBUTING.md for details.
11
12#include "dispatch.hpp"
13#include "grad.hpp"
14
15namespace mfem
16{
17
18namespace internal
19{
20
21namespace quadrature_interpolator
22{
23
24// Tensor-product evaluation of quadrature point derivatives: dispatch function.
25// Instantiation for the case QVectorLayout::byNODES.
26template<>
27void TensorDerivatives<QVectorLayout::byNODES>(const int NE,
28 const int vdim,
29 const DofToQuad &maps,
30 const Vector &e_vec,
31 Vector &q_der)
32{
33 if (NE == 0) { return; }
34 const int dim = maps.FE->GetDim();
35 const int D1D = maps.ndof;
36 const int Q1D = maps.nqpt;
37 const real_t *B = maps.B.Read();
38 const real_t *G = maps.G.Read();
39 const real_t *J = nullptr; // not used in DERIVATIVES (non-GRAD_PHYS) mode
40 const real_t *X = e_vec.Read();
41 real_t *Y = q_der.Write();
42
43 constexpr QVectorLayout L = QVectorLayout::byNODES;
44 constexpr bool P = false; // GRAD_PHYS
45
46 const int id = (vdim<<8) | (D1D<<4) | Q1D;
47
48 if (dim == 1)
49 {
50 return Derivatives1D<L,P>(NE,G,J,X,Y,dim,vdim,D1D,Q1D);
51 }
52 if (dim == 2)
53 {
54 switch (id)
55 {
56 case 0x133: return Derivatives2D<L,P,1,3,3,16>(NE,B,G,J,X,Y);
57 case 0x134: return Derivatives2D<L,P,1,3,4,16>(NE,B,G,J,X,Y);
58 case 0x143: return Derivatives2D<L,P,1,4,3,16>(NE,B,G,J,X,Y);
59 case 0x144: return Derivatives2D<L,P,1,4,4,16>(NE,B,G,J,X,Y);
60
61 case 0x222: return Derivatives2D<L,P,2,2,2,16>(NE,B,G,J,X,Y);
62 case 0x223: return Derivatives2D<L,P,2,2,3,8>(NE,B,G,J,X,Y);
63 case 0x224: return Derivatives2D<L,P,2,2,4,4>(NE,B,G,J,X,Y);
64 case 0x225: return Derivatives2D<L,P,2,2,5,4>(NE,B,G,J,X,Y);
65 case 0x226: return Derivatives2D<L,P,2,2,6,2>(NE,B,G,J,X,Y);
66
67 case 0x233: return Derivatives2D<L,P,2,3,3,2>(NE,B,G,J,X,Y);
68 case 0x234: return Derivatives2D<L,P,2,3,4,4>(NE,B,G,J,X,Y);
69 case 0x243: return Derivatives2D<L,P,2,4,3,4>(NE,B,G,J,X,Y);
70 case 0x236: return Derivatives2D<L,P,2,3,6,2>(NE,B,G,J,X,Y);
71
72 case 0x244: return Derivatives2D<L,P,2,4,4,2>(NE,B,G,J,X,Y);
73 case 0x245: return Derivatives2D<L,P,2,4,5,2>(NE,B,G,J,X,Y);
74 case 0x246: return Derivatives2D<L,P,2,4,6,2>(NE,B,G,J,X,Y);
75 case 0x247: return Derivatives2D<L,P,2,4,7,2>(NE,B,G,J,X,Y);
76
77 case 0x256: return Derivatives2D<L,P,2,5,6,2>(NE,B,G,J,X,Y);
78 default:
79 {
80 const int MD = DeviceDofQuadLimits::Get().MAX_D1D;
81 const int MQ = DeviceDofQuadLimits::Get().MAX_Q1D;
82 if (D1D > MD || Q1D > MQ)
83 {
84 MFEM_ABORT("");
85 }
86 Derivatives2D<L,P>(NE,B,G,J,X,Y,dim,vdim,D1D,Q1D);
87 return;
88 }
89 }
90 }
91 if (dim == 3)
92 {
93 switch (id)
94 {
95 case 0x124: return Derivatives3D<L,P,1,2,4>(NE,B,G,J,X,Y);
96 case 0x133: return Derivatives3D<L,P,1,3,3>(NE,B,G,J,X,Y);
97 case 0x134: return Derivatives3D<L,P,1,3,4>(NE,B,G,J,X,Y);
98 case 0x136: return Derivatives3D<L,P,1,3,6>(NE,B,G,J,X,Y);
99 case 0x144: return Derivatives3D<L,P,1,4,4>(NE,B,G,J,X,Y);
100 case 0x148: return Derivatives3D<L,P,1,4,8>(NE,B,G,J,X,Y);
101
102 case 0x323: return Derivatives3D<L,P,3,2,3>(NE,B,G,J,X,Y);
103 case 0x324: return Derivatives3D<L,P,3,2,4>(NE,B,G,J,X,Y);
104 case 0x325: return Derivatives3D<L,P,3,2,5>(NE,B,G,J,X,Y);
105 case 0x326: return Derivatives3D<L,P,3,2,6>(NE,B,G,J,X,Y);
106
107 case 0x333: return Derivatives3D<L,P,3,3,3>(NE,B,G,J,X,Y);
108 case 0x334: return Derivatives3D<L,P,3,3,4>(NE,B,G,J,X,Y);
109 case 0x335: return Derivatives3D<L,P,3,3,5>(NE,B,G,J,X,Y);
110 case 0x336: return Derivatives3D<L,P,3,3,6>(NE,B,G,J,X,Y);
111 case 0x344: return Derivatives3D<L,P,3,4,4>(NE,B,G,J,X,Y);
112 case 0x346: return Derivatives3D<L,P,3,4,6>(NE,B,G,J,X,Y);
113 case 0x347: return Derivatives3D<L,P,3,4,7>(NE,B,G,J,X,Y);
114 case 0x348: return Derivatives3D<L,P,3,4,8>(NE,B,G,J,X,Y);
115 default:
116 {
117 const int MD = DeviceDofQuadLimits::Get().MAX_INTERP_1D;
118 const int MQ = DeviceDofQuadLimits::Get().MAX_INTERP_1D;
119 MFEM_VERIFY(D1D <= MD, "Orders higher than " << MD-1
120 << " are not supported!");
121 MFEM_VERIFY(Q1D <= MQ, "Quadrature rules with more than "
122 << MQ << " 1D points are not supported!");
123 Derivatives3D<L,P>(NE,B,G,J,X,Y,vdim,D1D,Q1D);
124 return;
125 }
126 }
127 }
128 mfem::out << "Unknown kernel 0x" << std::hex << id << std::endl;
129 MFEM_ABORT("Kernel not supported yet");
130}
131
132} // namespace quadrature_interpolator
133
134} // namespace internal
135
136} // namespace mfem
dim
int dim
Definition ex24.cpp:53
mfem::out
OutStream out(std::cout)
Global stream used by the library for standard output. Initially it uses the same std::streambuf as s...
Definition globals.hpp:66
mfem::QVectorLayout
QVectorLayout
Type describing possible layouts for Q-vectors.
Definition fespace.hpp:53
mfem::QVectorLayout::byNODES
@ byNODES
NQPT x VDIM x NE (values) / NQPT x VDIM x DIM x NE (grads)
mfem::real_t
float real_t
Definition config.hpp:43
mfem::DeviceDofQuadLimits::Get
static const DeviceDofQuadLimits & Get()
Return a const reference to the DeviceDofQuadLimits singleton.
Definition forall.hpp:125
mfem::DeviceDofQuadLimits::MAX_INTERP_1D
int MAX_INTERP_1D
Maximum number of points for use in QuadratureInterpolator.
Definition forall.hpp:121
mfem::DeviceDofQuadLimits::MAX_D1D
int MAX_D1D
Maximum number of 1D nodal points.
Definition forall.hpp:115
mfem::DeviceDofQuadLimits::MAX_Q1D
int MAX_Q1D
Maximum number of 1D quadrature points.
Definition forall.hpp:116
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