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

Phys deriv operator using sum-factorisation (Pyramid) More...

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

Public Member Functions

 ~PhysDeriv_SumFac_Pyr () final
 
void operator() (const Array< OneD, const NekDouble > &input, Array< OneD, NekDouble > &output0, 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 void operator() (const Array< OneD, const NekDouble > &input, Array< OneD, NekDouble > &output0, Array< OneD, NekDouble > &output1, Array< OneD, NekDouble > &output2, Array< OneD, NekDouble > &wsp=NullNekDouble1DArray)=0
 Perform operation. More...
 
virtual COLLECTIONS_EXPORT void operator() (int dir, const Array< OneD, const NekDouble > &input, Array< OneD, NekDouble > &output, Array< OneD, NekDouble > &wsp=NullNekDouble1DArray)=0
 
virtual COLLECTIONS_EXPORT ~Operator ()
 
virtual COLLECTIONS_EXPORT void CheckFactors (StdRegions::FactorMap factors, int coll_phys_offset)=0
 Check the validity of the supplied factor map. More...
 
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

Array< TwoD, const NekDouble > m_derivFac
 
int m_coordim
 
const int m_nquad0
 
const int m_nquad1
 
const int m_nquad2
 
NekDouble * m_Deriv0
 
NekDouble * m_Deriv1
 
NekDouble * m_Deriv2
 
Array< OneD, NekDouble > m_fac0
 
Array< OneD, NekDouble > m_fac1
 
Array< OneD, NekDouble > m_fac2
 
- 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

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

Detailed Description

Phys deriv operator using sum-factorisation (Pyramid)

Definition at line 2015 of file PhysDeriv.cpp.

Constructor & Destructor Documentation

◆ ~PhysDeriv_SumFac_Pyr()

Nektar::Collections::PhysDeriv_SumFac_Pyr::~PhysDeriv_SumFac_Pyr ( )
inlinefinal

Definition at line 2020 of file PhysDeriv.cpp.

2021 {
2022 }

◆ PhysDeriv_SumFac_Pyr()

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

Definition at line 2228 of file PhysDeriv.cpp.

2231 : Operator(pCollExp, pGeomData, factors),
2232 m_nquad0(m_stdExp->GetNumPoints(0)),
2233 m_nquad1(m_stdExp->GetNumPoints(1)),
2234 m_nquad2(m_stdExp->GetNumPoints(2))
2235 {
2236 LibUtilities::PointsKeyVector PtsKey = m_stdExp->GetPointsKeys();
2237
2238 m_coordim = pCollExp[0]->GetCoordim();
2239
2240 m_derivFac = pGeomData->GetDerivFactors(pCollExp);
2241
2242 const Array<OneD, const NekDouble> &z0 = m_stdExp->GetBasis(0)->GetZ();
2243 const Array<OneD, const NekDouble> &z1 = m_stdExp->GetBasis(1)->GetZ();
2244 const Array<OneD, const NekDouble> &z2 = m_stdExp->GetBasis(2)->GetZ();
2245 m_fac0 = Array<OneD, NekDouble>(m_nquad0 * m_nquad1 * m_nquad2);
2246 m_fac1 = Array<OneD, NekDouble>(m_nquad0 * m_nquad1 * m_nquad2);
2247 m_fac2 = Array<OneD, NekDouble>(m_nquad0 * m_nquad1 * m_nquad2);
2248
2249 int nq0_nq1 = m_nquad0 * m_nquad1;
2250 for (int i = 0; i < m_nquad0; ++i)
2251 {
2252 for (int j = 0; j < m_nquad1; ++j)
2253 {
2254 int ifac = i + j * m_nquad0;
2255 for (int k = 0; k < m_nquad2; ++k)
2256 {
2257 m_fac0[ifac + k * nq0_nq1] = 2.0 / (1 - z2[k]);
2258 m_fac1[ifac + k * nq0_nq1] = 0.5 * (1 + z0[i]);
2259 m_fac2[ifac + k * nq0_nq1] = 0.5 * (1 + z1[j]);
2260 }
2261 }
2262 }
2263
2264 m_Deriv0 = &((m_stdExp->GetBasis(0)->GetD())->GetPtr())[0];
2265 m_Deriv1 = &((m_stdExp->GetBasis(1)->GetD())->GetPtr())[0];
2266 m_Deriv2 = &((m_stdExp->GetBasis(2)->GetD())->GetPtr())[0];
2267
2268 m_wspSize = 3 * m_nquad0 * m_nquad1 * m_nquad2 * m_numElmt;
2269 }
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::Collections::PhysDeriv_SumFac_Pyr::m_nquad2
const int m_nquad2
Definition: PhysDeriv.cpp:2219
Nektar::Collections::PhysDeriv_SumFac_Pyr::m_nquad0
const int m_nquad0
Definition: PhysDeriv.cpp:2217
Nektar::Collections::PhysDeriv_SumFac_Pyr::m_coordim
int m_coordim
Definition: PhysDeriv.cpp:2216
Nektar::Collections::PhysDeriv_SumFac_Pyr::m_fac1
Array< OneD, NekDouble > m_fac1
Definition: PhysDeriv.cpp:2224
Nektar::Collections::PhysDeriv_SumFac_Pyr::m_Deriv0
NekDouble * m_Deriv0
Definition: PhysDeriv.cpp:2220
Nektar::Collections::PhysDeriv_SumFac_Pyr::m_fac2
Array< OneD, NekDouble > m_fac2
Definition: PhysDeriv.cpp:2225
Nektar::Collections::PhysDeriv_SumFac_Pyr::m_derivFac
Array< TwoD, const NekDouble > m_derivFac
Definition: PhysDeriv.cpp:2215
Nektar::Collections::PhysDeriv_SumFac_Pyr::m_Deriv1
NekDouble * m_Deriv1
Definition: PhysDeriv.cpp:2221
Nektar::Collections::PhysDeriv_SumFac_Pyr::m_Deriv2
NekDouble * m_Deriv2
Definition: PhysDeriv.cpp:2222
Nektar::Collections::PhysDeriv_SumFac_Pyr::m_fac0
Array< OneD, NekDouble > m_fac0
Definition: PhysDeriv.cpp:2223
Nektar::Collections::PhysDeriv_SumFac_Pyr::m_nquad1
const int m_nquad1
Definition: PhysDeriv.cpp:2218
Nektar::LibUtilities::PointsKeyVector
std::vector< PointsKey > PointsKeyVector
Definition: Points.h:236
Nektar::VarcoeffHashingTest::factors
StdRegions::ConstFactorMap factors
Definition: TestVarcoeffHashing.cpp:52

References m_coordim, m_Deriv0, m_Deriv1, m_Deriv2, m_derivFac, m_fac0, m_fac1, m_fac2, m_nquad0, m_nquad1, m_nquad2, Nektar::Collections::Operator::m_numElmt, Nektar::Collections::Operator::m_stdExp, and Nektar::Collections::Operator::m_wspSize.

Member Function Documentation

◆ CheckFactors()

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

Check the validity of the supplied factor map.

Implements Nektar::Collections::Operator.

Definition at line 2207 of file PhysDeriv.cpp.

2209 {
2210 boost::ignore_unused(factors, coll_phys_offset);
2211 ASSERTL0(false, "Not valid for this operator.");
2212 }
ASSERTL0
#define ASSERTL0(condition, msg)
Definition: ErrorUtil.hpp:215

References ASSERTL0, and Nektar::VarcoeffHashingTest::factors.

◆ operator()() [1/2]

void Nektar::Collections::PhysDeriv_SumFac_Pyr::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 2024 of file PhysDeriv.cpp.

2029 {
2030
2031 int nPhys = m_stdExp->GetTotPoints();
2032 int ntot = m_numElmt * nPhys;
2033 Array<OneD, NekDouble> tmp0, tmp1, tmp2;
2034 Array<OneD, Array<OneD, NekDouble>> Diff(3);
2035 Array<OneD, Array<OneD, NekDouble>> out(3);
2036 out[0] = output0;
2037 out[1] = output1;
2038 out[2] = output2;
2039
2040 for (int i = 0; i < 3; ++i)
2041 {
2042 Diff[i] = wsp + i * ntot;
2043 }
2044
2045 // dEta0
2046 Blas::Dgemm('N', 'N', m_nquad0, m_nquad1 * m_nquad2 * m_numElmt,
2047 m_nquad0, 1.0, m_Deriv0, m_nquad0, &input[0], m_nquad0, 0.0,
2048 &Diff[0][0], m_nquad0);
2049
2050 int cnt = 0;
2051 for (int i = 0; i < m_numElmt; ++i)
2052 {
2053
2054 // dEta 1
2055 for (int j = 0; j < m_nquad2; ++j)
2056 {
2057 Blas::Dgemm('N', 'T', m_nquad0, m_nquad1, m_nquad1, 1.0,
2058 &input[i * nPhys + j * m_nquad0 * m_nquad1],
2059 m_nquad0, m_Deriv1, m_nquad1, 0.0,
2060 &Diff[1][i * nPhys + j * m_nquad0 * m_nquad1],
2061 m_nquad0);
2062 }
2063
2064 // dEta 2
2065 Blas::Dgemm('N', 'T', m_nquad0 * m_nquad1, m_nquad2, m_nquad2, 1.0,
2066 &input[i * nPhys], m_nquad0 * m_nquad1, m_Deriv2,
2067 m_nquad2, 0.0, &Diff[2][i * nPhys],
2068 m_nquad0 * m_nquad1);
2069
2070 // dxi0 = 2/(1-eta_2) d Eta_0
2071 Vmath::Vmul(nPhys, &m_fac0[0], 1, Diff[0].get() + cnt, 1,
2072 Diff[0].get() + cnt, 1);
2073
2074 // dxi1 = 2/(1-eta_2) d Eta_1
2075 Vmath::Vmul(nPhys, &m_fac0[0], 1, Diff[1].get() + cnt, 1,
2076 Diff[1].get() + cnt, 1);
2077
2078 // dxi2 = (1+eta0)/(1-eta_2) d Eta_0 + d/dEta2;
2079 Vmath::Vvtvp(nPhys, &m_fac1[0], 1, Diff[0].get() + cnt, 1,
2080 Diff[2].get() + cnt, 1, Diff[2].get() + cnt, 1);
2081
2082 // dxi2 += (1+eta1)/(1-eta_2) d Eta_1
2083 Vmath::Vvtvp(nPhys, &m_fac2[0], 1, Diff[1].get() + cnt, 1,
2084 Diff[2].get() + cnt, 1, Diff[2].get() + cnt, 1);
2085 cnt += nPhys;
2086 }
2087
2088 // calculate full derivative
2089 if (m_isDeformed)
2090 {
2091 for (int i = 0; i < m_coordim; ++i)
2092 {
2093 Vmath::Vmul(ntot, m_derivFac[i * 3], 1, Diff[0], 1, out[i], 1);
2094 for (int j = 1; j < 3; ++j)
2095 {
2096 Vmath::Vvtvp(ntot, m_derivFac[i * 3 + j], 1, Diff[j], 1,
2097 out[i], 1, out[i], 1);
2098 }
2099 }
2100 }
2101 else
2102 {
2103 Array<OneD, NekDouble> t;
2104 for (int e = 0; e < m_numElmt; ++e)
2105 {
2106 for (int i = 0; i < m_coordim; ++i)
2107 {
2108 Vmath::Smul(m_nqe, m_derivFac[i * 3][e],
2109 Diff[0] + e * m_nqe, 1, t = out[i] + e * m_nqe,
2110 1);
2111
2112 for (int j = 1; j < 3; ++j)
2113 {
2114 Vmath::Svtvp(m_nqe, m_derivFac[i * 3 + j][e],
2115 Diff[j] + e * m_nqe, 1, out[i] + e * m_nqe,
2116 1, t = out[i] + e * m_nqe, 1);
2117 }
2118 }
2119 }
2120 }
2121 }
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:385
Vmath::Vmul
void Vmul(int n, const T *x, const int incx, const T *y, const int incy, T *z, const int incz)
Multiply vector z = x*y.
Definition: Vmath.cpp:207
Vmath::Svtvp
void Svtvp(int n, const T alpha, const T *x, const int incx, const T *y, const int incy, T *z, const int incz)
svtvp (scalar times vector plus vector): z = alpha*x + y
Definition: Vmath.cpp:617
Vmath::Vvtvp
void Vvtvp(int n, const T *w, const int incw, const T *x, const int incx, const T *y, const int incy, T *z, const int incz)
vvtvp (vector times vector plus vector): z = w*x + y
Definition: Vmath.cpp:569
Vmath::Smul
void Smul(int n, const T alpha, const T *x, const int incx, T *y, const int incy)
Scalar multiply y = alpha*x.
Definition: Vmath.cpp:245

References Blas::Dgemm(), m_coordim, m_Deriv0, m_Deriv1, m_Deriv2, m_derivFac, m_fac0, m_fac1, m_fac2, Nektar::Collections::Operator::m_isDeformed, Nektar::Collections::Operator::m_nqe, m_nquad0, m_nquad1, m_nquad2, Nektar::Collections::Operator::m_numElmt, Nektar::Collections::Operator::m_stdExp, Vmath::Smul(), Vmath::Svtvp(), Vmath::Vmul(), and Vmath::Vvtvp().

◆ operator()() [2/2]

void Nektar::Collections::PhysDeriv_SumFac_Pyr::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 2123 of file PhysDeriv.cpp.

2126 {
2127 int nPhys = m_stdExp->GetTotPoints();
2128 int ntot = m_numElmt * nPhys;
2129 Array<OneD, NekDouble> tmp0, tmp1, tmp2;
2130 Array<OneD, Array<OneD, NekDouble>> Diff(3);
2131
2132 for (int i = 0; i < 3; ++i)
2133 {
2134 Diff[i] = wsp + i * ntot;
2135 }
2136
2137 // dEta0
2138 Blas::Dgemm('N', 'N', m_nquad0, m_nquad1 * m_nquad2 * m_numElmt,
2139 m_nquad0, 1.0, m_Deriv0, m_nquad0, &input[0], m_nquad0, 0.0,
2140 &Diff[0][0], m_nquad0);
2141
2142 int cnt = 0;
2143 for (int i = 0; i < m_numElmt; ++i)
2144 {
2145 // dEta 1
2146 for (int j = 0; j < m_nquad2; ++j)
2147 {
2148 Blas::Dgemm('N', 'T', m_nquad0, m_nquad1, m_nquad1, 1.0,
2149 &input[i * nPhys + j * m_nquad0 * m_nquad1],
2150 m_nquad0, m_Deriv1, m_nquad1, 0.0,
2151 &Diff[1][i * nPhys + j * m_nquad0 * m_nquad1],
2152 m_nquad0);
2153 }
2154
2155 // dEta 2
2156 Blas::Dgemm('N', 'T', m_nquad0 * m_nquad1, m_nquad2, m_nquad2, 1.0,
2157 &input[i * nPhys], m_nquad0 * m_nquad1, m_Deriv2,
2158 m_nquad2, 0.0, &Diff[2][i * nPhys],
2159 m_nquad0 * m_nquad1);
2160
2161 // dxi0 = 2/(1-eta_2) d Eta_0
2162 Vmath::Vmul(nPhys, &m_fac0[0], 1, Diff[0].get() + cnt, 1,
2163 Diff[0].get() + cnt, 1);
2164
2165 // dxi1 = 2/(1-eta_2) d Eta_1
2166 Vmath::Vmul(nPhys, &m_fac0[0], 1, Diff[1].get() + cnt, 1,
2167 Diff[1].get() + cnt, 1);
2168
2169 // dxi2 = (1+eta0)/(1-eta_2) d Eta_0 + d/dEta2;
2170 Vmath::Vvtvp(nPhys, &m_fac1[0], 1, Diff[0].get() + cnt, 1,
2171 Diff[2].get() + cnt, 1, Diff[2].get() + cnt, 1);
2172 // dxi2 = (1+eta1)/(1-eta_2) d Eta_1 + d/dEta2;
2173 Vmath::Vvtvp(nPhys, &m_fac2[0], 1, Diff[1].get() + cnt, 1,
2174 Diff[2].get() + cnt, 1, Diff[2].get() + cnt, 1);
2175 cnt += nPhys;
2176 }
2177
2178 // calculate full derivative
2179 if (m_isDeformed)
2180 {
2181 // calculate full derivative
2182 Vmath::Vmul(ntot, m_derivFac[dir * 3], 1, Diff[0], 1, output, 1);
2183 for (int j = 1; j < 3; ++j)
2184 {
2185 Vmath::Vvtvp(ntot, m_derivFac[dir * 3 + j], 1, Diff[j], 1,
2186 output, 1, output, 1);
2187 }
2188 }
2189 else
2190 {
2191 Array<OneD, NekDouble> t;
2192 for (int e = 0; e < m_numElmt; ++e)
2193 {
2194 Vmath::Smul(m_nqe, m_derivFac[dir * 3][e], Diff[0] + e * m_nqe,
2195 1, t = output + e * m_nqe, 1);
2196
2197 for (int j = 1; j < 3; ++j)
2198 {
2199 Vmath::Svtvp(m_nqe, m_derivFac[dir * 3 + j][e],
2200 Diff[j] + e * m_nqe, 1, output + e * m_nqe, 1,
2201 t = output + e * m_nqe, 1);
2202 }
2203 }
2204 }
2205 }

References Blas::Dgemm(), m_Deriv0, m_Deriv1, m_Deriv2, m_derivFac, m_fac0, m_fac1, m_fac2, Nektar::Collections::Operator::m_isDeformed, Nektar::Collections::Operator::m_nqe, m_nquad0, m_nquad1, m_nquad2, Nektar::Collections::Operator::m_numElmt, Nektar::Collections::Operator::m_stdExp, Vmath::Smul(), Vmath::Svtvp(), Vmath::Vmul(), and Vmath::Vvtvp().

Member Data Documentation

◆ m_coordim

int Nektar::Collections::PhysDeriv_SumFac_Pyr::m_coordim
protected

Definition at line 2216 of file PhysDeriv.cpp.

Referenced by operator()(), and PhysDeriv_SumFac_Pyr().

◆ m_Deriv0

NekDouble* Nektar::Collections::PhysDeriv_SumFac_Pyr::m_Deriv0
protected

Definition at line 2220 of file PhysDeriv.cpp.

Referenced by operator()(), and PhysDeriv_SumFac_Pyr().

◆ m_Deriv1

NekDouble* Nektar::Collections::PhysDeriv_SumFac_Pyr::m_Deriv1
protected

Definition at line 2221 of file PhysDeriv.cpp.

Referenced by operator()(), and PhysDeriv_SumFac_Pyr().

◆ m_Deriv2

NekDouble* Nektar::Collections::PhysDeriv_SumFac_Pyr::m_Deriv2
protected

Definition at line 2222 of file PhysDeriv.cpp.

Referenced by operator()(), and PhysDeriv_SumFac_Pyr().

◆ m_derivFac

Array<TwoD, const NekDouble> Nektar::Collections::PhysDeriv_SumFac_Pyr::m_derivFac
protected

Definition at line 2215 of file PhysDeriv.cpp.

Referenced by operator()(), and PhysDeriv_SumFac_Pyr().

◆ m_fac0

Array<OneD, NekDouble> Nektar::Collections::PhysDeriv_SumFac_Pyr::m_fac0
protected

Definition at line 2223 of file PhysDeriv.cpp.

Referenced by operator()(), and PhysDeriv_SumFac_Pyr().

◆ m_fac1

Array<OneD, NekDouble> Nektar::Collections::PhysDeriv_SumFac_Pyr::m_fac1
protected

Definition at line 2224 of file PhysDeriv.cpp.

Referenced by operator()(), and PhysDeriv_SumFac_Pyr().

◆ m_fac2

Array<OneD, NekDouble> Nektar::Collections::PhysDeriv_SumFac_Pyr::m_fac2
protected

Definition at line 2225 of file PhysDeriv.cpp.

Referenced by operator()(), and PhysDeriv_SumFac_Pyr().

◆ m_nquad0

const int Nektar::Collections::PhysDeriv_SumFac_Pyr::m_nquad0
protected

Definition at line 2217 of file PhysDeriv.cpp.

Referenced by operator()(), and PhysDeriv_SumFac_Pyr().

◆ m_nquad1

const int Nektar::Collections::PhysDeriv_SumFac_Pyr::m_nquad1
protected

Definition at line 2218 of file PhysDeriv.cpp.

Referenced by operator()(), and PhysDeriv_SumFac_Pyr().

◆ m_nquad2

const int Nektar::Collections::PhysDeriv_SumFac_Pyr::m_nquad2
protected

Definition at line 2219 of file PhysDeriv.cpp.

Referenced by operator()(), and PhysDeriv_SumFac_Pyr().

Generated on Wed Jan 31 2024 08:26:54 for Nektar++ by doxygen 1.9.4