MFEM v4.7.0
Finite element discretization library
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tmop_pa_jp2.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 "../tmop.hpp"
13#include "tmop_pa.hpp"
14#include "../tmop_tools.hpp"
17
18namespace mfem
19{
20
22 const int NE,
23 const Array<real_t> &b_,
24 const Array<real_t> &g_,
25 const Vector &x_,
26 Vector &DetJ,
27 const int d1d,
28 const int q1d)
29{
30 constexpr int DIM = 2;
31 constexpr int NBZ = 1;
32
33 const int D1D = T_D1D ? T_D1D : d1d;
34 const int Q1D = T_Q1D ? T_Q1D : q1d;
35
36 const auto b = Reshape(b_.Read(), Q1D, D1D);
37 const auto g = Reshape(g_.Read(), Q1D, D1D);
38 const auto X = Reshape(x_.Read(), D1D, D1D, DIM, NE);
39
40 auto E = Reshape(DetJ.Write(), Q1D, Q1D, NE);
41
42 mfem::forall_2D_batch(NE, Q1D, Q1D, NBZ, [=] MFEM_HOST_DEVICE (int e)
43 {
44 const int D1D = T_D1D ? T_D1D : d1d;
45 const int Q1D = T_Q1D ? T_Q1D : q1d;
46 constexpr int NBZ = 1;
47 constexpr int MQ1 = T_Q1D ? T_Q1D : T_MAX;
48 constexpr int MD1 = T_D1D ? T_D1D : T_MAX;
49
50 MFEM_SHARED real_t BG[2][MQ1*MD1];
51 MFEM_SHARED real_t XY[2][NBZ][MD1*MD1];
52 MFEM_SHARED real_t DQ[4][NBZ][MD1*MQ1];
53 MFEM_SHARED real_t QQ[4][NBZ][MQ1*MQ1];
54
55 kernels::internal::LoadX<MD1,NBZ>(e,D1D,X,XY);
56 kernels::internal::LoadBG<MD1,MQ1>(D1D,Q1D,b,g,BG);
57
58 kernels::internal::GradX<MD1,MQ1,NBZ>(D1D,Q1D,BG,XY,DQ);
59 kernels::internal::GradY<MD1,MQ1,NBZ>(D1D,Q1D,BG,DQ,QQ);
60
61 MFEM_FOREACH_THREAD(qy,y,Q1D)
62 {
63 MFEM_FOREACH_THREAD(qx,x,Q1D)
64 {
65 real_t J[4];
66 kernels::internal::PullGrad<MQ1,NBZ>(Q1D,qx,qy,QQ,J);
67 E(qx,qy,e) = kernels::Det<2>(J);
68 }
69 }
70 });
71
72 return DetJ.Min();
73}
74
76 const Vector &X) const
77{
79 const Operator *R = fes->GetElementRestriction(ordering);
81 XE.UseDevice(true);
82 R->Mult(X, XE);
83
84 const DofToQuad &maps = fes->GetFE(0)->GetDofToQuad(ir, DofToQuad::TENSOR);
85 const int NE = fes->GetMesh()->GetNE();
86 const int NQ = ir.GetNPoints();
87 const int D1D = maps.ndof;
88 const int Q1D = maps.nqpt;
89 const int id = (D1D << 4 ) | Q1D;
90 const Array<real_t> &B = maps.B;
91 const Array<real_t> &G = maps.G;
92
93 Vector E(NE*NQ);
94 E.UseDevice(true);
95
96 MFEM_LAUNCH_TMOP_KERNEL(MinDetJpr_Kernel_2D,id,NE,B,G,XE,E);
97}
98
99} // namespace mfem
const T * Read(bool on_dev=true) const
Shortcut for mfem::Read(a.GetMemory(), a.Size(), on_dev).
Definition array.hpp:317
static MemoryType GetDeviceMemoryType()
Get the current Device MemoryType. This is the MemoryType used by most MFEM classes when allocating m...
Definition device.hpp:274
Structure representing the matrices/tensors needed to evaluate (in reference space) the values,...
Definition fe_base.hpp:137
Array< real_t > G
Gradients/divergences/curls of basis functions evaluated at quadrature points.
Definition fe_base.hpp:210
@ TENSOR
Tensor product representation using 1D matrices/tensors with dimensions using 1D number of quadrature...
Definition fe_base.hpp:161
Array< real_t > B
Basis functions evaluated at quadrature points.
Definition fe_base.hpp:189
int ndof
Number of degrees of freedom = number of basis functions. When mode is TENSOR, this is the 1D number.
Definition fe_base.hpp:174
int nqpt
Number of quadrature points. When mode is TENSOR, this is the 1D number.
Definition fe_base.hpp:178
Class FiniteElementSpace - responsible for providing FEM view of the mesh, mainly managing the set of...
Definition fespace.hpp:220
virtual const FiniteElement * GetFE(int i) const
Returns pointer to the FiniteElement in the FiniteElementCollection associated with i'th element in t...
Definition fespace.cpp:3168
const ElementRestrictionOperator * GetElementRestriction(ElementDofOrdering e_ordering) const
Return an Operator that converts L-vectors to E-vectors.
Definition fespace.cpp:1336
Mesh * GetMesh() const
Returns the mesh.
Definition fespace.hpp:559
virtual const DofToQuad & GetDofToQuad(const IntegrationRule &ir, DofToQuad::Mode mode) const
Return a DofToQuad structure corresponding to the given IntegrationRule using the given DofToQuad::Mo...
Definition fe_base.cpp:365
int GetNPoints() const
Returns the number of the points in the integration rule.
Definition intrules.hpp:256
int GetNE() const
Returns number of elements.
Definition mesh.hpp:1226
Abstract operator.
Definition operator.hpp:25
int Height() const
Get the height (size of output) of the Operator. Synonym with NumRows().
Definition operator.hpp:66
virtual void Mult(const Vector &x, Vector &y) const =0
Operator application: y=A(x).
const IntegrationRule & ir
real_t MinDetJpr_2D(const FiniteElementSpace *, const Vector &) const
Vector data type.
Definition vector.hpp:80
virtual const real_t * Read(bool on_dev=true) const
Shortcut for mfem::Read(vec.GetMemory(), vec.Size(), on_dev).
Definition vector.hpp:474
virtual void UseDevice(bool use_dev) const
Enable execution of Vector operations using the mfem::Device.
Definition vector.hpp:136
real_t Min() const
Returns the minimal element of the vector.
Definition vector.cpp:1212
virtual real_t * Write(bool on_dev=true)
Shortcut for mfem::Write(vec.GetMemory(), vec.Size(), on_dev).
Definition vector.hpp:482
real_t b
Definition lissajous.cpp:42
constexpr int DIM
MFEM_HOST_DEVICE T Det(const T *data)
Compute the determinant of a square matrix of size dim with given data.
Definition kernels.hpp:237
MFEM_REGISTER_TMOP_KERNELS(void, DatcSize, const int NE, const int ncomp, const int sizeidx, const real_t input_min_size, const DenseMatrix &w_, const Array< real_t > &b_, const Vector &x_, const Vector &nc_reduce, DenseTensor &j_, const int d1d, const int q1d)
MFEM_HOST_DEVICE DeviceTensor< sizeof...(Dims), T > Reshape(T *ptr, Dims... dims)
Wrap a pointer as a DeviceTensor with automatically deduced template parameters.
Definition dtensor.hpp:131
void forall_2D_batch(int N, int X, int Y, int BZ, lambda &&body)
Definition forall.hpp:769
float real_t
Definition config.hpp:43
ElementDofOrdering
Constants describing the possible orderings of the DOFs in one element.
Definition fespace.hpp:75
@ LEXICOGRAPHIC
Lexicographic ordering for tensor-product FiniteElements.