MFEM v4.7.0
Finite element discretization library
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grad_by_vdim.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::byVDIM.
26template<>
27void TensorDerivatives<QVectorLayout::byVDIM>(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
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 0x134: return Derivatives2D<L,P,1,3,4,8>(NE,B,G,J,X,Y);
57 case 0x146: return Derivatives2D<L,P,1,4,6,4>(NE,B,G,J,X,Y);
58 case 0x158: return Derivatives2D<L,P,1,5,8,2>(NE,B,G,J,X,Y);
59
60 case 0x234: return Derivatives2D<L,P,2,3,4,8>(NE,B,G,J,X,Y);
61 case 0x246: return Derivatives2D<L,P,2,4,6,4>(NE,B,G,J,X,Y);
62 case 0x258: return Derivatives2D<L,P,2,5,8,2>(NE,B,G,J,X,Y);
63 default:
64 {
65 const int MD = DeviceDofQuadLimits::Get().MAX_D1D;
66 const int MQ = DeviceDofQuadLimits::Get().MAX_Q1D;
67 MFEM_VERIFY(D1D <= MD, "Orders higher than " << MD-1
68 << " are not supported!");
69 MFEM_VERIFY(Q1D <= MQ, "Quadrature rules with more than "
70 << MQ << " 1D points are not supported!");
71 Derivatives2D<L,P>(NE,B,G,J,X,Y,dim,vdim,D1D,Q1D);
72 return;
73 }
74 }
75 }
76 if (dim == 3)
77 {
78 switch (id)
79 {
80 case 0x134: return Derivatives3D<L,P,1,3,4>(NE,B,G,J,X,Y);
81 case 0x146: return Derivatives3D<L,P,1,4,6>(NE,B,G,J,X,Y);
82 case 0x158: return Derivatives3D<L,P,1,5,8>(NE,B,G,J,X,Y);
83
84 case 0x334: return Derivatives3D<L,P,3,3,4>(NE,B,G,J,X,Y);
85 case 0x346: return Derivatives3D<L,P,3,4,6>(NE,B,G,J,X,Y);
86 case 0x358: return Derivatives3D<L,P,3,5,8>(NE,B,G,J,X,Y);
87 default:
88 {
91 MFEM_VERIFY(D1D <= MD, "Orders higher than " << MD-1
92 << " are not supported!");
93 MFEM_VERIFY(Q1D <= MQ, "Quadrature rules with more than "
94 << MQ << " 1D points are not supported!");
95 Derivatives3D<L,P>(NE,B,G,J,X,Y,vdim,D1D,Q1D);
96 return;
97 }
98 }
99 }
100 mfem::out << "Unknown kernel 0x" << std::hex << id << std::endl;
101 MFEM_ABORT("Kernel not supported yet");
102}
103
104} // namespace quadrature_interpolator
105
106} // namespace internal
107
108} // namespace mfem
int dim
Definition ex24.cpp:53
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
QVectorLayout
Type describing possible layouts for Q-vectors.
Definition fespace.hpp:53
@ byVDIM
VDIM x NQPT x NE (values) / VDIM x DIM x NQPT x NE (grads)
float real_t
Definition config.hpp:43
static const DeviceDofQuadLimits & Get()
Return a const reference to the DeviceDofQuadLimits singleton.
Definition forall.hpp:125
int MAX_INTERP_1D
Maximum number of points for use in QuadratureInterpolator.
Definition forall.hpp:121
int MAX_D1D
Maximum number of 1D nodal points.
Definition forall.hpp:115
int MAX_Q1D
Maximum number of 1D quadrature points.
Definition forall.hpp:116