Updating Kokkos lib

git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@15556 f3b2605a-c512-4ea7-a41b-209d697bcdaa

lib/kokkos/example/tutorial/02_simple_reduce/CMakeLists.txt

@@ -0,0 +1,10 @@
+
+INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR})
+INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
+
+# This is a tutorial, not a test, so we don't ask CTest to run it.
+TRIBITS_ADD_EXECUTABLE(
+  tutorial_02_simple_reduce
+  SOURCES simple_reduce.cpp
+  COMM serial mpi
+  )

lib/kokkos/example/tutorial/02_simple_reduce/Makefile

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+KOKKOS_PATH = ../../..
+SRC = $(wildcard *.cpp)
+
+default: build
+	echo "Start Build"
+
+ifneq (,$(findstring Cuda,$(KOKKOS_DEVICES)))
+CXX = ../../../config/nvcc_wrapper
+CXXFLAGS = -O3
+LINK = ${CXX}
+LINKFLAGS = 
+EXE = $(SRC:.cpp=.cuda)
+KOKKOS_DEVICES = "Cuda,OpenMP"
+KOKKOS_ARCH = "SNB,Kepler35"
+else
+CXX = g++
+CXXFLAGS = -O3
+LINK = ${CXX}
+LINKFLAGS =  
+EXE = $(SRC:.cpp=.host)
+KOKKOS_DEVICES = "OpenMP"
+KOKKOS_ARCH = "SNB"
+endif
+
+DEPFLAGS = -M
+
+OBJ = $(SRC:.cpp=.o)
+LIB =
+
+include $(KOKKOS_PATH)/Makefile.kokkos
+
+build: $(EXE)
+
+$(EXE): $(OBJ) $(KOKKOS_LINK_DEPENDS)
+	$(LINK) $(KOKKOS_LDFLAGS) $(LINKFLAGS) $(EXTRA_PATH) $(OBJ) $(KOKKOS_LIBS) $(LIB) -o $(EXE)
+
+clean: kokkos-clean 
+	rm -f *.o *.cuda *.host
+
+# Compilation rules
+
+%.o:%.cpp $(KOKKOS_CPP_DEPENDS)
+	$(CXX) $(KOKKOS_CPPFLAGS) $(KOKKOS_CXXFLAGS) $(CXXFLAGS) $(EXTRA_INC) -c $<

lib/kokkos/example/tutorial/02_simple_reduce/simple_reduce.cpp

@@ -0,0 +1,101 @@
+/*
+//@HEADER
+// ************************************************************************
+// 
+//                        Kokkos v. 2.0
+//              Copyright (2014) Sandia Corporation
+// 
+// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
+// 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 SANDIA CORPORATION "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 SANDIA CORPORATION 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  H. Carter Edwards (hcedwar@sandia.gov)
+// 
+// ************************************************************************
+//@HEADER
+*/
+
+#include <Kokkos_Core.hpp>
+#include <cstdio>
+
+//
+// First reduction (parallel_reduce) example:
+//   1. Start up Kokkos
+//   2. Execute a parallel_reduce loop in the default execution space,
+//      using a functor to define the loop body
+//   3. Shut down Kokkos
+//
+// Compare this example to 02_simple_reduce_lambda, which uses a C++11
+// lambda to define the loop body of the parallel_reduce.
+//
+
+// Reduction functor for computing the sum of squares.
+//
+// More advanced reduction examples will show how to control the
+// reduction's "join" operator.  If the join operator is not provided,
+// it defaults to binary operator+ (adding numbers together).
+struct squaresum {
+  // Specify the type of the reduction value with a "value_type"
+  // typedef.  In this case, the reduction value has type int.
+  typedef int value_type;
+
+  // The reduction functor's operator() looks a little different than
+  // the parallel_for functor's operator().  For the reduction, we
+  // pass in both the loop index i, and the intermediate reduction
+  // value lsum.  The latter MUST be passed in by nonconst reference.
+  // (If the reduction type is an array like int[], indicating an
+  // array reduction result, then the second argument is just int[].)
+  KOKKOS_INLINE_FUNCTION
+  void operator () (const int i, int& lsum) const {
+    lsum += i*i; // compute the sum of squares
+  }
+};
+
+int main (int argc, char* argv[]) {
+  Kokkos::initialize (argc, argv);
+  const int n = 10;
+
+  // Compute the sum of squares of integers from 0 to n-1, in
+  // parallel, using Kokkos.
+  int sum = 0;
+  Kokkos::parallel_reduce (n, squaresum (), sum);
+  printf ("Sum of squares of integers from 0 to %i, "
+          "computed in parallel, is %i\n", n - 1, sum);
+
+  // Compare to a sequential loop.
+  int seqSum = 0;
+  for (int i = 0; i < n; ++i) {
+    seqSum += i*i;
+  }
+  printf ("Sum of squares of integers from 0 to %i, "
+          "computed sequentially, is %i\n", n - 1, seqSum);
+  Kokkos::finalize ();
+  return (sum == seqSum) ? 0 : -1;
+}
+