Creation of the 'lapack' subdirectory, parallel to 'blas'

CMakeLists.txt

@@ -115,6 +115,7 @@ IF (KokkosKernels_INSTALL_TESTING)
   KOKKOSKERNELS_ADD_TEST_DIRECTORIES(batched/dense/unit_test)
   KOKKOSKERNELS_ADD_TEST_DIRECTORIES(batched/sparse/unit_test)
   KOKKOSKERNELS_ADD_TEST_DIRECTORIES(blas/unit_test)
+  KOKKOSKERNELS_ADD_TEST_DIRECTORIES(lapack/unit_test)
   KOKKOSKERNELS_ADD_TEST_DIRECTORIES(graph/unit_test)
   KOKKOSKERNELS_ADD_TEST_DIRECTORIES(sparse/unit_test)
   KOKKOSKERNELS_ADD_TEST_DIRECTORIES(ode/unit_test)
@@ -192,7 +193,7 @@ ELSE()
     "ALL"
     STRING
     "A list of components to enable in testing and building"
-    VALID_ENTRIES BATCHED BLAS GRAPH SPARSE ALL
+    VALID_ENTRIES BATCHED BLAS LAPACK GRAPH SPARSE ALL
   )
 
   # ==================================================================
@@ -243,6 +244,7 @@ ELSE()
   MESSAGE("   COMMON:    ON")
   MESSAGE("   BATCHED:   ${KokkosKernels_ENABLE_COMPONENT_BATCHED}")
   MESSAGE("   BLAS:      ${KokkosKernels_ENABLE_COMPONENT_BLAS}")
+  MESSAGE("   LAPACK:    ${KokkosKernels_ENABLE_COMPONENT_LAPACK}")
   MESSAGE("   GRAPH:     ${KokkosKernels_ENABLE_COMPONENT_GRAPH}")
   MESSAGE("   SPARSE:    ${KokkosKernels_ENABLE_COMPONENT_SPARSE}")
   MESSAGE("   ODE:       ${KokkosKernels_ENABLE_COMPONENT_ODE}")
@@ -287,6 +289,9 @@ ELSE()
   IF (KokkosKernels_ENABLE_COMPONENT_BLAS)
     INCLUDE(blas/CMakeLists.txt)
   ENDIF()
+  IF (KokkosKernels_ENABLE_COMPONENT_LAPACK)
+    INCLUDE(lapack/CMakeLists.txt)
+  ENDIF()
   IF (KokkosKernels_ENABLE_COMPONENT_GRAPH)
     INCLUDE(graph/CMakeLists.txt)
   ENDIF()
@@ -405,6 +410,9 @@ ELSE()
   IF (KokkosKernels_ENABLE_COMPONENT_BLAS)
     KOKKOSKERNELS_ADD_TEST_DIRECTORIES(blas/unit_test)
   ENDIF()
+  IF (KokkosKernels_ENABLE_COMPONENT_LAPACK)
+    KOKKOSKERNELS_ADD_TEST_DIRECTORIES(lapack/unit_test)
+  ENDIF()
   IF (KokkosKernels_ENABLE_COMPONENT_GRAPH)
     KOKKOSKERNELS_ADD_TEST_DIRECTORIES(graph/unit_test)
   ENDIF()

blas/CMakeLists.txt

@@ -101,13 +101,6 @@ KOKKOSKERNELS_GENERATE_ETI(Blas1_dot_mv dot
   TYPE_LISTS  FLOATS LAYOUTS DEVICES
 )
 
-KOKKOSKERNELS_GENERATE_ETI(Blas_gesv gesv
-  COMPONENTS  blas
-  HEADER_LIST ETI_HEADERS
-  SOURCE_LIST SOURCES
-  TYPE_LISTS  FLOATS LAYOUTS DEVICES
-)
-
 KOKKOSKERNELS_GENERATE_ETI(Blas1_axpby axpby
   COMPONENTS  blas
   HEADER_LIST ETI_HEADERS
@@ -331,10 +324,3 @@ KOKKOSKERNELS_GENERATE_ETI(Blas3_trmm trmm
   SOURCE_LIST SOURCES
   TYPE_LISTS  FLOATS LAYOUTS DEVICES
 )
-
-KOKKOSKERNELS_GENERATE_ETI(Blas_trtri trtri
-  COMPONENTS  blas
-  HEADER_LIST ETI_HEADERS
-  SOURCE_LIST SOURCES
-  TYPE_LISTS  FLOATS LAYOUTS DEVICES
-)

blas/src/KokkosBlas_gesv.hpp

@@ -25,10 +25,7 @@
 #ifndef KOKKOSBLAS_GESV_HPP_
 #define KOKKOSBLAS_GESV_HPP_
 
-#include <type_traits>
-
-#include "KokkosBlas_gesv_spec.hpp"
-#include "KokkosKernels_Error.hpp"
+#include "KokkosLapack_gesv.hpp"
 
 namespace KokkosBlas {
 
@@ -49,100 +46,8 @@ namespace KokkosBlas {
 ///   its data pointer is NULL, pivoting is not used.
 ///
 template <class AMatrix, class BXMV, class IPIVV>
-void gesv(const AMatrix& A, const BXMV& B, const IPIVV& IPIV) {
-  // NOTE: Currently, KokkosBlas::gesv only supports for MAGMA TPL and BLAS TPL.
-  //       MAGMA TPL should be enabled to call the MAGMA GPU interface for
-  //       device views BLAS TPL should be enabled to call the BLAS interface
-  //       for host views
-
-  static_assert(Kokkos::is_view<AMatrix>::value,
-                "KokkosBlas::gesv: A must be a Kokkos::View.");
-  static_assert(Kokkos::is_view<BXMV>::value,
-                "KokkosBlas::gesv: B must be a Kokkos::View.");
-  static_assert(Kokkos::is_view<IPIVV>::value,
-                "KokkosBlas::gesv: IPIV must be a Kokkos::View.");
-  static_assert(static_cast<int>(AMatrix::rank) == 2,
-                "KokkosBlas::gesv: A must have rank 2.");
-  static_assert(
-      static_cast<int>(BXMV::rank) == 1 || static_cast<int>(BXMV::rank) == 2,
-      "KokkosBlas::gesv: B must have either rank 1 or rank 2.");
-  static_assert(static_cast<int>(IPIVV::rank) == 1,
-                "KokkosBlas::gesv: IPIV must have rank 1.");
-
-  int64_t IPIV0 = IPIV.extent(0);
-  int64_t A0    = A.extent(0);
-  int64_t A1    = A.extent(1);
-  int64_t B0    = B.extent(0);
-
-  // Check validity of pivot argument
-  bool valid_pivot =
-      (IPIV0 == A1) || ((IPIV0 == 0) && (IPIV.data() == nullptr));
-  if (!(valid_pivot)) {
-    std::ostringstream os;
-    os << "KokkosBlas::gesv: IPIV: " << IPIV0 << ". "
-       << "Valid options include zero-extent 1-D view (no pivoting), or 1-D "
-          "View with size of "
-       << A0 << " (partial pivoting).";
-    KokkosKernels::Impl::throw_runtime_exception(os.str());
-  }
-
-  // Check for no pivoting case. Only MAGMA supports no pivoting interface
-#ifdef KOKKOSKERNELS_ENABLE_TPL_MAGMA  // have MAGMA TPL
-#ifdef KOKKOSKERNELS_ENABLE_TPL_BLAS   // and have BLAS TPL
-  if ((!std::is_same<typename AMatrix::device_type::memory_space,
-                     Kokkos::CudaSpace>::value) &&
-      (IPIV0 == 0) && (IPIV.data() == nullptr)) {
-    std::ostringstream os;
-    os << "KokkosBlas::gesv: IPIV: " << IPIV0 << ". "
-       << "BLAS TPL does not support no pivoting.";
-    KokkosKernels::Impl::throw_runtime_exception(os.str());
-  }
-#endif
-#else                                 // not have MAGMA TPL
-#ifdef KOKKOSKERNELS_ENABLE_TPL_BLAS  // but have BLAS TPL
-  if ((IPIV0 == 0) && (IPIV.data() == nullptr)) {
-    std::ostringstream os;
-    os << "KokkosBlas::gesv: IPIV: " << IPIV0 << ". "
-       << "BLAS TPL does not support no pivoting.";
-    KokkosKernels::Impl::throw_runtime_exception(os.str());
-  }
-#endif
-#endif
-
-  // Check compatibility of dimensions at run time.
-  if ((A0 < A1) || (A0 != B0)) {
-    std::ostringstream os;
-    os << "KokkosBlas::gesv: Dimensions of A, and B do not match: "
-       << " A: " << A.extent(0) << " x " << A.extent(1) << " B: " << B.extent(0)
-       << " x " << B.extent(1);
-    KokkosKernels::Impl::throw_runtime_exception(os.str());
-  }
-
-  typedef Kokkos::View<
-      typename AMatrix::non_const_value_type**, typename AMatrix::array_layout,
-      typename AMatrix::device_type, Kokkos::MemoryTraits<Kokkos::Unmanaged> >
-      AMatrix_Internal;
-  typedef Kokkos::View<typename BXMV::non_const_value_type**,
-                       typename BXMV::array_layout, typename BXMV::device_type,
-                       Kokkos::MemoryTraits<Kokkos::Unmanaged> >
-      BXMV_Internal;
-  typedef Kokkos::View<
-      typename IPIVV::non_const_value_type*, typename IPIVV::array_layout,
-      typename IPIVV::device_type, Kokkos::MemoryTraits<Kokkos::Unmanaged> >
-      IPIVV_Internal;
-  AMatrix_Internal A_i = A;
-  // BXMV_Internal B_i = B;
-  IPIVV_Internal IPIV_i = IPIV;
-
-  if (BXMV::rank == 1) {
-    auto B_i = BXMV_Internal(B.data(), B.extent(0), 1);
-    KokkosBlas::Impl::GESV<AMatrix_Internal, BXMV_Internal,
-                           IPIVV_Internal>::gesv(A_i, B_i, IPIV_i);
-  } else {  // BXMV::rank == 2
-    auto B_i = BXMV_Internal(B.data(), B.extent(0), B.extent(1));
-    KokkosBlas::Impl::GESV<AMatrix_Internal, BXMV_Internal,
-                           IPIVV_Internal>::gesv(A_i, B_i, IPIV_i);
-  }
+[[deprecated]] void gesv(const AMatrix& A, const BXMV& B, const IPIVV& IPIV) {
+  KokkosLapack::gesv(A, B, IPIV);
 }
 
 }  // namespace KokkosBlas

blas/src/KokkosBlas_trtri.hpp

@@ -18,12 +18,7 @@
 
 /// \file KokkosBlas_trtri.hpp
 
-#include "KokkosKernels_Macros.hpp"
-#include "KokkosBlas_trtri_spec.hpp"
-#include "KokkosKernels_helpers.hpp"
-#include <sstream>
-#include <type_traits>
-#include "KokkosKernels_Error.hpp"
+#include "KokkosLapack_trtri.hpp"
 
 namespace KokkosBlas {
 
@@ -48,70 +43,9 @@ namespace KokkosBlas {
 //                    and the inversion could not be completed.
 // source: https://software.intel.com/en-us/mkl-developer-reference-c-trtri
 template <class AViewType>
-int trtri(const char uplo[], const char diag[], const AViewType& A) {
-  static_assert(Kokkos::is_view<AViewType>::value,
-                "AViewType must be a Kokkos::View.");
-  static_assert(static_cast<int>(AViewType::rank) == 2,
-                "AViewType must have rank 2.");
-
-  // Check validity of indicator argument
-  bool valid_uplo = (uplo[0] == 'U') || (uplo[0] == 'u') || (uplo[0] == 'L') ||
-                    (uplo[0] == 'l');
-  bool valid_diag = (diag[0] == 'U') || (diag[0] == 'u') || (diag[0] == 'N') ||
-                    (diag[0] == 'n');
-
-  if (!valid_uplo) {
-    std::ostringstream os;
-    os << "KokkosBlas::trtri: uplo = '" << uplo[0] << "'. "
-       << "Valid values include 'U' or 'u' (A is upper triangular), "
-          "'L' or 'l' (A is lower triangular).";
-    KokkosKernels::Impl::throw_runtime_exception(os.str());
-  }
-  if (!valid_diag) {
-    std::ostringstream os;
-    os << "KokkosBlas::trtri: diag = '" << diag[0] << "'. "
-       << "Valid values include 'U' or 'u' (the diagonal of A is assumed to be "
-          "unit), "
-          "'N' or 'n' (the diagonal of A is assumed to be non-unit).";
-    KokkosKernels::Impl::throw_runtime_exception(os.str());
-  }
-
-  int64_t A_m = A.extent(0);
-  int64_t A_n = A.extent(1);
-
-  // Return if degenerated matrices are provided
-  if (A_m == 0 || A_n == 0)
-    return 0;  // This is success as the inverse of a matrix with no elements is
-               // itself.
-
-  // Ensure that the dimensions of A match and that we can legally perform A*B
-  // or B*A
-  if (A_m != A_n) {
-    std::ostringstream os;
-    os << "KokkosBlas::trtri: Dimensions of A do not match,"
-       << " A: " << A.extent(0) << " x " << A.extent(1);
-    KokkosKernels::Impl::throw_runtime_exception(os.str());
-  }
-
-  // Create A matrix view type alias
-  using AViewInternalType =
-      Kokkos::View<typename AViewType::non_const_value_type**,
-                   typename AViewType::array_layout,
-                   typename AViewType::device_type,
-                   Kokkos::MemoryTraits<Kokkos::Unmanaged> >;
-
-  // This is the return value type and should always reside on host
-  using RViewInternalType =
-      Kokkos::View<int, Kokkos::LayoutRight, Kokkos::HostSpace,
-                   Kokkos::MemoryTraits<Kokkos::Unmanaged> >;
-
-  int result;
-  RViewInternalType R = RViewInternalType(&result);
-
-  KokkosBlas::Impl::TRTRI<RViewInternalType, AViewInternalType>::trtri(R, uplo,
-                                                                       diag, A);
-
-  return result;
+[[deprecated]] int trtri(const char uplo[], const char diag[],
+                         const AViewType& A) {
+  return KokkosLapack::trtri(uplo, diag, A);
 }
 
 }  // namespace KokkosBlas