#5: Added team dot benchmark test

perf_test/CMakeLists.txt

@@ -143,6 +143,7 @@ IF(KokkosKernels_ENABLE_BENCHMARK)
       BenchmarkMain.cpp
       blas/blas1/KokkosBlas_dot_perf_test_benchmark.cpp
       blas/blas1/KokkosBlas_dot_mv_perf_test_benchmark.cpp
+      blas/blas1/KokkosBlas_team_dot_perf_test_benchmark.cpp
     )
 
     KOKKOSKERNELS_ADD_BENCHMARK(

perf_test/blas/blas1/KokkosBlas_team_dot_perf_test_benchmark.cpp

@@ -0,0 +1,145 @@
+/*
+//@HEADER
+// ************************************************************************
+//
+//                        Kokkos v. 3.0
+//       Copyright (2020) National Technology & Engineering
+//               Solutions of Sandia, LLC (NTESS).
+//
+// Under the terms of Contract DE-NA0003525 with NTESS,
+// the U.S. Government retains certain rights in this software.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// 1. Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+//
+// 3. Neither the name of the Corporation nor the names of the
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY NTESS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NTESS OR THE
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Questions? Contact Siva Rajamanickam (srajama@sandia.gov)
+//
+// ************************************************************************
+//@HEADER
+*/
+
+#include <Kokkos_Core.hpp>
+#include <KokkosBlas1_team_dot.hpp>
+#include <Kokkos_Random.hpp>
+#include "KokkosKernels_TestUtils.hpp"
+
+#include <benchmark/benchmark.h>
+
+// Functor to handle the case of a "without Cuda" build
+template <class Vector, class ExecSpace>
+struct teamDotFunctor {
+  // Compile - time check to see if your data type is a Kokkos::View:
+  static_assert(Kokkos::is_view<Vector>::value,
+                "Vector is not a Kokkos::View.");
+
+  using Scalar = typename Vector::non_const_value_type;
+  // Vector is templated on memory space
+  using execution_space = ExecSpace;  // Kokkos Execution Space
+  typedef typename Kokkos::TeamPolicy<execution_space> team_policy;
+  typedef typename team_policy::member_type team_member;
+
+  // Declare Kokkos::View Vectors, x and y
+  Vector x;
+  Vector y;
+
+  // Functor instead of KOKKOS_LAMBDA expression
+
+  KOKKOS_INLINE_FUNCTION void operator()(const team_member& team) const {
+    KokkosBlas::Experimental::dot(team, x, y);
+  }
+  // Constructor
+  teamDotFunctor(Vector X_, Vector Y_) {
+    x = X_;
+    y = Y_;
+  }
+};
+
+template <class ExecSpace>
+static void run(benchmark::State& state) {
+  const auto m      = state.range(0);
+  const auto repeat = state.range(1);
+  // Declare type aliases
+  using Scalar   = double;
+  using MemSpace = typename ExecSpace::memory_space;
+
+  // For the Team implementation of dot; ExecSpace is implicit;
+  using policy = Kokkos::TeamPolicy<ExecSpace>;
+
+  // Create 1D view w/ Device as the ExecSpace; this is an input vector
+  Kokkos::View<Scalar*, MemSpace> x("X", m);
+  // Create 1D view w/ Device as the ExecSpace; this is the output vector
+  Kokkos::View<Scalar*, MemSpace> y("Y", m);
+
+  // Here, deep_copy is filling / copying values into Host memory from Views X
+  // and Y
+  Kokkos::deep_copy(x, 3.0);
+  Kokkos::deep_copy(y, 2.0);
+
+  std::cout << "Running BLAS Level 1 Kokkos Teams-based implementation DOT "
+               "performance experiment ("
+            << ExecSpace::name() << ")\n";
+
+  std::cout << "Each test input vector has a length of " << m << std::endl;
+
+  for (auto _ : state) {
+    // Warm up run of dot:
+    teamDotFunctor<Kokkos::View<Scalar*, MemSpace>, ExecSpace>
+        teamDotFunctorWarmUpInstance(x, y);
+
+    Kokkos::parallel_for("TeamDotUsage -- Warm Up Run", policy(1, Kokkos::AUTO),
+                         teamDotFunctorWarmUpInstance);
+
+    // The live test of dot:
+
+    Kokkos::fence();
+    Kokkos::Timer timer;
+
+    teamDotFunctor<Kokkos::View<Scalar*, MemSpace>, ExecSpace>
+        teamDotFunctorLiveTestInstance(x, y);
+    Kokkos::parallel_for("TeamDotUsage -- Live Test", policy(1, Kokkos::AUTO),
+                         teamDotFunctorLiveTestInstance);
+
+    // Kokkos Timer set up and data capture
+    double total = timer.seconds();
+    double avg   = total / repeat;
+    // Flops calculation for a 1D matrix dot product per test run;
+    size_t flopsPerRun = (size_t)2 * m;
+    printf("Avg DOT time: %f s.\n", avg);
+    printf("Avg DOT FLOP/s: %.3e\n", flopsPerRun / avg);
+    state.SetIterationTime(timer.seconds());
+
+    state.counters["Avg DOT time (s):"] =
+        benchmark::Counter(avg, benchmark::Counter::kDefaults);
+    state.counters["Avg DOT FLOP/s:"] =
+        benchmark::Counter(flopsPerRun / avg, benchmark::Counter::kDefaults);
+  }
+}
+
+BENCHMARK(run<Kokkos::DefaultExecutionSpace>)
+    ->ArgNames({"m", "repeat"})
+    ->Args({100000, 1})
+    ->UseManualTime();