/usr/include/trilinos/Kokkos_Blas1_MP_Vector.hpp is in libtrilinos-stokhos-dev 12.10.1-3.
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#ifndef KOKKOS_BLAS1_MP_VECTOR_HPP
#define KOKKOS_BLAS1_MP_VECTOR_HPP
#include "Sacado_ConfigDefs.h"
#include "Sacado_MP_Vector.hpp"
#include "Kokkos_View_MP_Vector.hpp"
#include "Kokkos_InnerProductSpaceTraits_MP_Vector.hpp"
#include "Kokkos_Blas1_MV.hpp"
//----------------------------------------------------------------------------
// Specializations of Kokkos Vector/MultiVector math functions
//----------------------------------------------------------------------------
namespace KokkosBlas {
#if defined(HAVE_STOKHOS_ENSEMBLE_REDUCT)
template <typename XD, typename ... XP,
typename YD, typename ... YP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<YD,YP...> >::value,
typename Kokkos::Details::InnerProductSpaceTraits<
typename Kokkos::View<XD,XP...>::non_const_value_type >::dot_type
>::type
dot(const Kokkos::View<XD,XP...>& x,
const Kokkos::View<YD,YP...>& y)
{
typedef Kokkos::View<XD,XP...> XVector;
typedef Kokkos::View<YD,YP...> YVector;
typename Kokkos::FlatArrayType<XVector>::type x_flat = x;
typename Kokkos::FlatArrayType<YVector>::type y_flat = y;
return dot( x_flat, y_flat );
}
template <typename RV,
typename XD, typename ... XP,
typename YD, typename ... YP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<YD,YP...> >::value >::type
dot(const RV& r,
const Kokkos::View<XD,XP...>& x,
const Kokkos::View<YD,YP...>& y)
{
typedef Kokkos::View<XD,XP...> XVector;
typedef Kokkos::View<YD,YP...> YVector;
typename Kokkos::FlatArrayType<XVector>::type x_flat = x;
typename Kokkos::FlatArrayType<YVector>::type y_flat = y;
dot( r, x_flat, y_flat );
}
template <typename XD, typename ... XP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value >::type
fill(const Kokkos::View<XD,XP...>& x,
const typename Kokkos::View<XD,XP...>::non_const_value_type& val) {
typedef Kokkos::View<XD,XP...> XVector;
// Use the existing fill() implementation if we can
if (Sacado::is_constant(val)) {
typename Kokkos::FlatArrayType<XVector>::type x_flat = x;
fill( x_flat, val.coeff(0) );
}
else {
Kokkos::deep_copy(x, val);
}
}
template <typename RV,
typename XD, typename ... XP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value >::type
nrm2_squared(
const RV& r,
const Kokkos::View<XD,XP...>& x)
{
typedef Kokkos::View<XD,XP...> XVector;
typename Kokkos::FlatArrayType<XVector>::type x_flat = x;
nrm2_squared( r, x_flat );
}
template <typename RV,
typename XD, typename ... XP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value >::type
nrm1(
const RV& r,
const Kokkos::View<XD,XP...>& x)
{
typedef Kokkos::View<XD,XP...> XVector;
typename Kokkos::FlatArrayType<XVector>::type x_flat = x;
nrm1( r, x_flat );
}
template <typename RV,
typename XD, typename ... XP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value >::type
nrmInf(
const RV& r,
const Kokkos::View<XD,XP...>& x)
{
typedef Kokkos::View<XD,XP...> XVector;
typename Kokkos::FlatArrayType<XVector>::type x_flat = x;
nrmInf( r, x_flat );
}
template <typename AV,
typename XD, typename ... XP,
typename BV,
typename YD, typename ... YP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<YD,YP...> >::value >::type
axpby(const AV& a,
const Kokkos::View<XD,XP...>& x,
const BV& b,
const Kokkos::View<YD,YP...>& y)
{
typedef Kokkos::View<XD,XP...> XVector;
typedef Kokkos::View<YD,YP...> YVector;
if (!Sacado::is_constant(a) || !Sacado::is_constant(b)) {
Kokkos::Impl::raise_error("axpby not implemented for non-constant a or b");
}
typename Kokkos::FlatArrayType<XVector>::type x_flat = x;
typename Kokkos::FlatArrayType<YVector>::type y_flat = y;
auto aa = Sacado::Value<AV>::eval(a);
auto bb = Sacado::Value<BV>::eval(b);
axpby( aa, x_flat, bb, y_flat );
}
// Currently not handling scal() when AV is a view
template <typename RD, typename ... RP,
typename XD, typename ... XP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<RD,RP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value >::type
scal(const Kokkos::View<RD,RP...>& r,
const typename Kokkos::View<XD,XP...>::non_const_value_type& a,
const Kokkos::View<XD,XP...>& x)
{
typedef Kokkos::View<RD,RP...> RVector;
typedef Kokkos::View<XD,XP...> XVector;
if (!Sacado::is_constant(a)) {
Kokkos::Impl::raise_error("scal not implemented for non-constant a");
}
typename Kokkos::FlatArrayType<XVector>::type x_flat = x;
typename Kokkos::FlatArrayType<RVector>::type r_flat = r;
scal( r_flat, a.coeff(0), x_flat );
}
// abs -- can't do this one by flattening. Hold out for refactoring of scalar
// types in Kokkos
// We have a special verision of update for scalar alpha/beta/gamma since it
// is used in TrilinosCouplings CG solve (even though Tpetra doesn't).
template <typename XD, typename ... XP,
typename YD, typename ... YP,
typename ZD, typename ... ZP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<YD,YP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<ZD,ZP...> >::value >::type
update(
const typename Kokkos::View<XD,XP...>::array_type::non_const_value_type& alpha,
const Kokkos::View<XD,XP...>& x,
const typename Kokkos::View<YD,YP...>::array_type::non_const_value_type& beta,
const Kokkos::View<YD,YP...>& y,
const typename Kokkos::View<ZD,ZP...>::array_type::non_const_value_type& gamma,
const Kokkos::View<ZD,ZP...>& z)
{
typedef Kokkos::View<XD,XP...> XVector;
typedef Kokkos::View<YD,YP...> YVector;
typedef Kokkos::View<ZD,ZP...> ZVector;
typename Kokkos::FlatArrayType<XVector>::type x_flat = x;
typename Kokkos::FlatArrayType<YVector>::type y_flat = y;
typename Kokkos::FlatArrayType<ZVector>::type z_flat = z;
update( alpha, x_flat, beta, y_flat, gamma, z_flat);
}
template <typename XD, typename ... XP,
typename YD, typename ... YP,
typename ZD, typename ... ZP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<YD,YP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<ZD,ZP...> >::value >::type
update(
const typename Kokkos::View<XD,XP...>::non_const_value_type& alpha,
const Kokkos::View<XD,XP...>& x,
const typename Kokkos::View<YD,YP...>::non_const_value_type& beta,
const Kokkos::View<YD,YP...>& y,
const typename Kokkos::View<ZD,ZP...>::non_const_value_type& gamma,
const Kokkos::View<ZD,ZP...>& z)
{
if (!Sacado::is_constant(alpha) || !Sacado::is_constant(beta) ||
!Sacado::is_constant(gamma)) {
Kokkos::Impl::raise_error(
"update not implemented for non-constant alpha, beta, gamma");
}
update( alpha.coeff(0), x, beta.coeff(0), y, gamma.coeff(0), z );
}
template <typename RD, typename ... RP,
typename XD, typename ... XP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<RD,RP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value >::type
reciprocal(
const Kokkos::View<RD,RP...>& r,
const Kokkos::View<XD,XP...>& x)
{
typedef Kokkos::View<RD,RP...> RVector;
typedef Kokkos::View<XD,XP...> XVector;
typename Kokkos::FlatArrayType<XVector>::type x_flat = x;
typename Kokkos::FlatArrayType<RVector>::type r_flat = r;
reciprocal( r_flat, x_flat );
}
template <typename RD, typename ... RP,
typename XD, typename ... XP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<RD,RP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value >::type
sum(
const Kokkos::View<RD,RP...>& r,
const Kokkos::View<XD,XP...>& x)
{
typedef Kokkos::View<RD,RP...> RVector;
typedef Kokkos::View<XD,XP...> XVector;
typename Kokkos::FlatArrayType<XVector>::type x_flat = x;
typename Kokkos::FlatArrayType<RVector>::type r_flat = r;
sum( r_flat, x_flat );
}
template <typename RD, typename ... RP,
typename XD, typename ... XP,
typename WD, typename ... WP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<RD,RP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<XD,XP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<WD,WP...> >::value >::type
nrm2w_squared(
const Kokkos::View<RD,RP...>& r,
const Kokkos::View<XD,XP...>& x,
const Kokkos::View<WD,WP...>& w)
{
typedef Kokkos::View<RD,RP...> RVector;
typedef Kokkos::View<XD,XP...> XVector;
typedef Kokkos::View<WD,WP...> WVector;
typename Kokkos::FlatArrayType<XVector>::type x_flat = x;
typename Kokkos::FlatArrayType<RVector>::type r_flat = r;
typename Kokkos::FlatArrayType<WVector>::type w_flat = w;
nrm2w_squared( r_flat, x_flat, w_flat );
}
template <typename CD, typename ... CP,
typename AD, typename ... AP,
typename BD, typename ... BP>
typename std::enable_if<
Kokkos::is_view_mp_vector< Kokkos::View<CD,CP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<AD,AP...> >::value &&
Kokkos::is_view_mp_vector< Kokkos::View<BD,BP...> >::value >::type
mult(
const typename Kokkos::View<CD,CP...>::const_value_type& c,
const Kokkos::View<CD,CP...>& C,
const typename Kokkos::View<AD,AP...>::const_value_type& ab,
const Kokkos::View<AD,AP...>& A,
const Kokkos::View<BD,BP...>& B)
{
if (!Sacado::is_constant(c) || !Sacado::is_constant(ab)) {
Kokkos::Impl::raise_error("mult not implemented for non-constant c, ab");
}
typedef Kokkos::View<CD,CP...> CVector;
typedef Kokkos::View<AD,AP...> AVector;
typedef Kokkos::View<BD,BP...> BVector;
typename Kokkos::FlatArrayType<CVector>::type C_flat = C;
typename Kokkos::FlatArrayType<AVector>::type A_flat = A;
typename Kokkos::FlatArrayType<BVector>::type B_flat = B;
mult( c.coeff(0), C_flat, ab.coeff(0), A_flat, B_flat );
}
#endif
} // namespace KokkosBlas
#endif /* #ifndef KOKKOS_MV_MP_VECTOR_HPP */
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