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KokkosBlas3_gemm_MP_Vector.hpp
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41
42#ifndef KOKKOSBLAS3_GEMM_MP_VECTOR_HPP
43#define KOKKOSBLAS3_GEMM_MP_VECTOR_HPP
44
45#include <type_traits>
46#include "Sacado_ConfigDefs.h"
47
49#include "Sacado_MP_Vector.hpp"
52#include "KokkosBlas.hpp"
53
54namespace KokkosBlas
55{
56template <typename DA, typename... PA,
57 typename DB, typename... PB,
58 typename DC, typename... PC>
59typename std::enable_if<Kokkos::is_view_mp_vector<Kokkos::View<DA, PA...>>::value &&
60 Kokkos::is_view_mp_vector<Kokkos::View<DB, PB...>>::value &&
61 Kokkos::is_view_mp_vector<Kokkos::View<DC, PC...>>::value>::type
62gemm(const char transA[],
63 const char transB[],
64 typename Kokkos::View<DA, PA...>::const_value_type &alpha,
65 const Kokkos::View<DA, PA...> &A,
66 const Kokkos::View<DB, PB...> &B,
67 typename Kokkos::View<DC, PC...>::const_value_type &beta,
68 const Kokkos::View<DC, PC...> &C)
69{
70 // Assert that A, B, and C are in fact matrices
71 static_assert(Kokkos::View<DA, PA...>::rank == 2, "GEMM: A must have rank 2 (be a matrix).");
72 static_assert(Kokkos::View<DB, PB...>::rank == 2, "GEMM: B must have rank 2 (be a matrix).");
73 static_assert(Kokkos::View<DC, PC...>::rank == 2, "GEMM: C must have rank 2 (be a matrix).");
74
75 if (B.extent(1) == 1 && C.extent(1) == 1)
76 {
77 auto x = Kokkos::subview(B, Kokkos::ALL, 0);
78 auto y = Kokkos::subview(C, Kokkos::ALL, 0);
79 KokkosBlas::gemv(transA, alpha, A, x, beta, y);
80 }
81 else
82 TEUCHOS_TEST_FOR_EXCEPTION(true, std::logic_error, "GEMM: Not implemented for Sacado::MP::Vector scalar type!");
83}
84} // namespace KokkosBlas
85
86#endif
std::enable_if< Kokkos::is_view_mp_vector< Kokkos::View< DA, PA... > >::value &&Kokkos::is_view_mp_vector< Kokkos::View< DB, PB... > >::value &&Kokkos::is_view_mp_vector< Kokkos::View< DC, PC... > >::value >::type gemm(const char transA[], const char transB[], typename Kokkos::View< DA, PA... >::const_value_type &alpha, const Kokkos::View< DA, PA... > &A, const Kokkos::View< DB, PB... > &B, typename Kokkos::View< DC, PC... >::const_value_type &beta, const Kokkos::View< DC, PC... > &C)
std::enable_if< Kokkos::is_view_mp_vector< Kokkos::View< DA, PA... > >::value &&Kokkos::is_view_mp_vector< Kokkos::View< DX, PX... > >::value &&Kokkos::is_view_mp_vector< Kokkos::View< DY, PY... > >::value >::type gemv(const char trans[], typename Kokkos::View< DA, PA... >::const_value_type &alpha, const Kokkos::View< DA, PA... > &A, const Kokkos::View< DX, PX... > &x, typename Kokkos::View< DY, PY... >::const_value_type &beta, const Kokkos::View< DY, PY... > &y)