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Public Member Functions | Protected Attributes | Private Member Functions | List of all members
Nektar::Collections::BwdTrans_SumFac_Prism Class Referencefinal

Backward transform operator using sum-factorisation (Prism) More...

Inheritance diagram for Nektar::Collections::BwdTrans_SumFac_Prism:
[legend]

Public Member Functions

 ~BwdTrans_SumFac_Prism () final
 
void operator() (const Array< OneD, const NekDouble > &input, Array< OneD, NekDouble > &output, Array< OneD, NekDouble > &output1, Array< OneD, NekDouble > &output2, Array< OneD, NekDouble > &wsp) override final
 Perform operation. More...
 
void operator() (int dir, const Array< OneD, const NekDouble > &input, Array< OneD, NekDouble > &output, Array< OneD, NekDouble > &wsp) override final
 
virtual void CheckFactors (StdRegions::FactorMap factors, int coll_phys_offset) override
 Check the validity of the supplied factor map. More...
 
- Public Member Functions inherited from Nektar::Collections::Operator
 Operator (std::vector< StdRegions::StdExpansionSharedPtr > pCollExp, std::shared_ptr< CoalescedGeomData > GeomData, StdRegions::FactorMap factors)
 Constructor. More...
 
virtual COLLECTIONS_EXPORT ~Operator ()
 
unsigned int GetWspSize ()
 Get the size of the required workspace. More...
 
unsigned int GetNumElmt ()
 Get expansion pointer. More...
 
StdRegions::StdExpansionSharedPtr GetExpSharedPtr ()
 Get expansion pointer. More...
 

Protected Attributes

const int m_nquad0
 
const int m_nquad1
 
const int m_nquad2
 
const int m_nmodes0
 
const int m_nmodes1
 
const int m_nmodes2
 
Array< OneD, const NekDouble > m_base0
 
Array< OneD, const NekDouble > m_base1
 
Array< OneD, const NekDouble > m_base2
 
bool m_sortTopVertex
 
- Protected Attributes inherited from Nektar::Collections::Operator
bool m_isDeformed
 
StdRegions::StdExpansionSharedPtr m_stdExp
 
unsigned int m_numElmt
 
unsigned int m_nqe
 
unsigned int m_wspSize
 

Private Member Functions

 BwdTrans_SumFac_Prism (vector< StdRegions::StdExpansionSharedPtr > pCollExp, CoalescedGeomDataSharedPtr pGeomData, StdRegions::FactorMap factors)
 

Detailed Description

Backward transform operator using sum-factorisation (Prism)

Definition at line 1022 of file BwdTrans.cpp.

Constructor & Destructor Documentation

◆ ~BwdTrans_SumFac_Prism()

Nektar::Collections::BwdTrans_SumFac_Prism::~BwdTrans_SumFac_Prism ( )
inlinefinal

Definition at line 1027 of file BwdTrans.cpp.

1028  {
1029  }

◆ BwdTrans_SumFac_Prism()

Nektar::Collections::BwdTrans_SumFac_Prism::BwdTrans_SumFac_Prism ( vector< StdRegions::StdExpansionSharedPtr >  pCollExp,
CoalescedGeomDataSharedPtr  pGeomData,
StdRegions::FactorMap  factors 
)
inlineprivate

Definition at line 1131 of file BwdTrans.cpp.

1134  : Operator(pCollExp, pGeomData, factors),
1135  m_nquad0(m_stdExp->GetNumPoints(0)),
1136  m_nquad1(m_stdExp->GetNumPoints(1)),
1137  m_nquad2(m_stdExp->GetNumPoints(2)),
1138  m_nmodes0(m_stdExp->GetBasisNumModes(0)),
1139  m_nmodes1(m_stdExp->GetBasisNumModes(1)),
1140  m_nmodes2(m_stdExp->GetBasisNumModes(2)),
1141  m_base0(m_stdExp->GetBasis(0)->GetBdata()),
1142  m_base1(m_stdExp->GetBasis(1)->GetBdata()),
1143  m_base2(m_stdExp->GetBasis(2)->GetBdata())
1144  {
1145  m_wspSize = m_numElmt * m_nmodes0 *
1146  (m_nmodes1 * m_nquad2 + m_nquad1 * m_nquad2);
1147 
1148  if (m_stdExp->GetBasis(0)->GetBasisType() == LibUtilities::eModified_A)
1149  {
1150  m_sortTopVertex = true;
1151  }
1152  else
1153  {
1154  m_sortTopVertex = false;
1155  }
1156  }
Nektar::Collections::BwdTrans_SumFac_Prism::m_nmodes0
const int m_nmodes0
Definition: BwdTrans.cpp:1122
Nektar::Collections::BwdTrans_SumFac_Prism::m_sortTopVertex
bool m_sortTopVertex
Definition: BwdTrans.cpp:1128
Nektar::Collections::BwdTrans_SumFac_Prism::m_nquad2
const int m_nquad2
Definition: BwdTrans.cpp:1121
Nektar::Collections::BwdTrans_SumFac_Prism::m_nmodes1
const int m_nmodes1
Definition: BwdTrans.cpp:1123
Nektar::Collections::BwdTrans_SumFac_Prism::m_nquad0
const int m_nquad0
Definition: BwdTrans.cpp:1119
Nektar::Collections::BwdTrans_SumFac_Prism::m_nquad1
const int m_nquad1
Definition: BwdTrans.cpp:1120
Nektar::Collections::BwdTrans_SumFac_Prism::m_nmodes2
const int m_nmodes2
Definition: BwdTrans.cpp:1124
Nektar::Collections::BwdTrans_SumFac_Prism::m_base0
Array< OneD, const NekDouble > m_base0
Definition: BwdTrans.cpp:1125
Nektar::Collections::BwdTrans_SumFac_Prism::m_base1
Array< OneD, const NekDouble > m_base1
Definition: BwdTrans.cpp:1126
Nektar::Collections::BwdTrans_SumFac_Prism::m_base2
Array< OneD, const NekDouble > m_base2
Definition: BwdTrans.cpp:1127
Nektar::Collections::Operator::m_stdExp
StdRegions::StdExpansionSharedPtr m_stdExp
Definition: Operator.h:165
Nektar::Collections::Operator::Operator
Operator(std::vector< StdRegions::StdExpansionSharedPtr > pCollExp, std::shared_ptr< CoalescedGeomData > GeomData, StdRegions::FactorMap factors)
Constructor.
Definition: Operator.cpp:43
Nektar::LibUtilities::eModified_A
@ eModified_A
Principle Modified Functions .
Definition: BasisType.h:50

References Nektar::LibUtilities::eModified_A.

Member Function Documentation

◆ CheckFactors()

virtual void Nektar::Collections::BwdTrans_SumFac_Prism::CheckFactors ( StdRegions::FactorMap  factors,
int  coll_phys_offset 
)
inlineoverridevirtual

Check the validity of the supplied factor map.

Implements Nektar::Collections::Operator.

Definition at line 1111 of file BwdTrans.cpp.

1113  {
1114  boost::ignore_unused(factors, coll_phys_offset);
1115  ASSERTL0(false, "Not valid for this operator.");
1116  }
ASSERTL0
#define ASSERTL0(condition, msg)
Definition: ErrorUtil.hpp:215

References ASSERTL0.

◆ operator()() [1/2]

void Nektar::Collections::BwdTrans_SumFac_Prism::operator() ( const Array< OneD, const NekDouble > &  input,
Array< OneD, NekDouble > &  output0,
Array< OneD, NekDouble > &  output1,
Array< OneD, NekDouble > &  output2,
Array< OneD, NekDouble > &  wsp 
)
inlinefinaloverridevirtual

Perform operation.

Implements Nektar::Collections::Operator.

Definition at line 1031 of file BwdTrans.cpp.

1036  {
1037  boost::ignore_unused(output1, output2);
1038 
1039  ASSERTL1(wsp.size() == m_wspSize, "Incorrect workspace size");
1040 
1041  // Assign second half of workspace for 2nd DGEMM operation.
1042  int totmodes = m_stdExp->GetNcoeffs();
1043 
1044  Array<OneD, NekDouble> wsp2 =
1045  wsp + m_nmodes0 * m_nmodes1 * m_nquad2 * m_numElmt;
1046 
1047  Vmath::Zero(m_nmodes0 * m_nmodes1 * m_nquad2 * m_numElmt, wsp, 1);
1048  int i = 0;
1049  int j = 0;
1050  int mode = 0;
1051  int mode1 = 0;
1052  int cnt = 0;
1053  for (i = mode = mode1 = 0; i < m_nmodes0; ++i)
1054  {
1055  cnt = i * m_nquad2 * m_numElmt;
1056  for (j = 0; j < m_nmodes1; ++j)
1057  {
1058  Blas::Dgemm('N', 'N', m_nquad2, m_numElmt, m_nmodes2 - i, 1.0,
1059  m_base2.get() + mode * m_nquad2, m_nquad2,
1060  input.get() + mode1, totmodes, 0.0,
1061  &wsp[j * m_nquad2 * m_numElmt * m_nmodes0 + cnt],
1062  m_nquad2);
1063  mode1 += m_nmodes2 - i;
1064  }
1065  mode += m_nmodes2 - i;
1066  }
1067 
1068  // fix for modified basis by splitting top vertex mode
1069  if (m_sortTopVertex)
1070  {
1071  for (j = 0; j < m_nmodes1; ++j)
1072  {
1073  for (i = 0; i < m_numElmt; ++i)
1074  {
1075  Blas::Daxpy(m_nquad2,
1076  input[1 + i * totmodes + j * m_nmodes2],
1077  m_base2.get() + m_nquad2, 1,
1078  &wsp[j * m_nquad2 * m_numElmt * m_nmodes0 +
1079  m_nquad2 * m_numElmt] +
1080  i * m_nquad2,
1081  1);
1082  }
1083  }
1084  // Believe this could be made into a m_nmodes1
1085  // dgemv if we made an array of m_numElmt copies
1086  // of m_base2[m_quad2] (which are of size
1087  // m_nquad2.
1088  }
1089 
1090  // Perform summation over '1' direction
1091  Blas::Dgemm('N', 'T', m_nquad1, m_nquad2 * m_numElmt * m_nmodes0,
1092  m_nmodes1, 1.0, m_base1.get(), m_nquad1, wsp.get(),
1093  m_nquad2 * m_numElmt * m_nmodes0, 0.0, wsp2.get(),
1094  m_nquad1);
1095 
1096  // Perform summation over '0' direction
1097  Blas::Dgemm('N', 'T', m_nquad0, m_nquad1 * m_nquad2 * m_numElmt,
1098  m_nmodes0, 1.0, m_base0.get(), m_nquad0, wsp2.get(),
1099  m_nquad1 * m_nquad2 * m_numElmt, 0.0, output.get(),
1100  m_nquad0);
1101  }
ASSERTL1
#define ASSERTL1(condition, msg)
Assert Level 1 – Debugging which is used whether in FULLDEBUG or DEBUG compilation mode....
Definition: ErrorUtil.hpp:249
Blas::Dgemm
static void Dgemm(const char &transa, const char &transb, const int &m, const int &n, const int &k, const double &alpha, const double *a, const int &lda, const double *b, const int &ldb, const double &beta, double *c, const int &ldc)
BLAS level 3: Matrix-matrix multiply C = A x B where op(A)[m x k], op(B)[k x n], C[m x n] DGEMM perfo...
Definition: Blas.hpp:368
Blas::Daxpy
static void Daxpy(const int &n, const double &alpha, const double *x, const int &incx, const double *y, const int &incy)
BLAS level 1: y = alpha x plus y.
Definition: Blas.hpp:154
Vmath::Zero
void Zero(int n, T *x, const int incx)
Zero vector.
Definition: Vmath.cpp:492

References ASSERTL1, Blas::Daxpy(), Blas::Dgemm(), and Vmath::Zero().

◆ operator()() [2/2]

void Nektar::Collections::BwdTrans_SumFac_Prism::operator() ( int  dir,
const Array< OneD, const NekDouble > &  input,
Array< OneD, NekDouble > &  output,
Array< OneD, NekDouble > &  wsp 
)
inlinefinaloverridevirtual

Implements Nektar::Collections::Operator.

Definition at line 1103 of file BwdTrans.cpp.

1106  {
1107  boost::ignore_unused(dir, input, output, wsp);
1108  ASSERTL0(false, "Not valid for this operator.");
1109  }

References ASSERTL0.

Member Data Documentation

◆ m_base0

Array<OneD, const NekDouble> Nektar::Collections::BwdTrans_SumFac_Prism::m_base0
protected

Definition at line 1125 of file BwdTrans.cpp.

◆ m_base1

Array<OneD, const NekDouble> Nektar::Collections::BwdTrans_SumFac_Prism::m_base1
protected

Definition at line 1126 of file BwdTrans.cpp.

◆ m_base2

Array<OneD, const NekDouble> Nektar::Collections::BwdTrans_SumFac_Prism::m_base2
protected

Definition at line 1127 of file BwdTrans.cpp.

◆ m_nmodes0

const int Nektar::Collections::BwdTrans_SumFac_Prism::m_nmodes0
protected

Definition at line 1122 of file BwdTrans.cpp.

◆ m_nmodes1

const int Nektar::Collections::BwdTrans_SumFac_Prism::m_nmodes1
protected

Definition at line 1123 of file BwdTrans.cpp.

◆ m_nmodes2

const int Nektar::Collections::BwdTrans_SumFac_Prism::m_nmodes2
protected

Definition at line 1124 of file BwdTrans.cpp.

◆ m_nquad0

const int Nektar::Collections::BwdTrans_SumFac_Prism::m_nquad0
protected

Definition at line 1119 of file BwdTrans.cpp.

◆ m_nquad1

const int Nektar::Collections::BwdTrans_SumFac_Prism::m_nquad1
protected

Definition at line 1120 of file BwdTrans.cpp.

◆ m_nquad2

const int Nektar::Collections::BwdTrans_SumFac_Prism::m_nquad2
protected

Definition at line 1121 of file BwdTrans.cpp.

◆ m_sortTopVertex

bool Nektar::Collections::BwdTrans_SumFac_Prism::m_sortTopVertex
protected

Definition at line 1128 of file BwdTrans.cpp.

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