Update Kokkos library to v2.03.13

lib/kokkos/core/unit_test/TestUniqueToken.hpp

@@ -0,0 +1,138 @@
+/*
+//@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 <iostream>
+
+#include <Kokkos_Core.hpp>
+
+namespace Test {
+
+template< class Space >
+class TestUniqueToken
+{
+public:
+  typedef typename Space::execution_space  execution_space;
+  typedef Kokkos::View< int * , execution_space > view_type ;
+
+  Kokkos::Experimental::UniqueToken< execution_space , Kokkos::Experimental::UniqueTokenScope::Global > tokens ;
+
+  view_type verify ;
+  view_type counts ;
+  view_type errors ;
+
+  KOKKOS_INLINE_FUNCTION
+  void operator()( long ) const
+  {
+    const int32_t t = tokens.acquire();
+
+    bool ok = true ;
+
+    ok = ok && 0 <= t ;
+    ok = ok && t < tokens.size();
+    ok = ok && 0 == Kokkos::atomic_fetch_add( & verify(t) , 1 );
+
+    Kokkos::atomic_fetch_add( & counts(t) , 1 );
+
+    ok = ok && 1 == Kokkos::atomic_fetch_add( & verify(t) , -1 );
+
+    if ( ! ok ) { Kokkos::atomic_fetch_add( & errors(0) , 1 ) ; }
+
+    tokens.release(t);
+  }
+
+  TestUniqueToken()
+    : tokens( execution_space() )
+    , verify( "TestUniqueTokenVerify" , tokens.size() )
+    , counts( "TestUniqueTokenCounts" , tokens.size() )
+    , errors( "TestUniqueTokenErrors" , 1 )
+    {}
+
+  static void run()
+    {
+      using policy = Kokkos::RangePolicy<execution_space> ;
+
+      TestUniqueToken self ;
+
+      {
+        const int duplicate = 100 ;
+        const long n = duplicate * self.tokens.size();
+
+        Kokkos::parallel_for( policy(0,n) , self );
+        Kokkos::parallel_for( policy(0,n) , self );
+        Kokkos::parallel_for( policy(0,n) , self );
+        Kokkos::fence();
+      }
+
+      typename view_type::HostMirror host_counts =
+        Kokkos::create_mirror_view( self.counts );
+
+      Kokkos::deep_copy( host_counts , self.counts );
+
+      int32_t max = 0 ;
+
+      {
+        const long n = host_counts.extent(0);
+        for ( long i = 0 ; i < n ; ++i ) {
+          if ( max < host_counts[i] ) max = host_counts[i] ;
+        }
+      }
+
+      std::cout << "TestUniqueToken max reuse = " << max << std::endl ;
+
+      typename view_type::HostMirror host_errors =
+        Kokkos::create_mirror_view( self.errors );
+
+      Kokkos::deep_copy( host_errors , self.errors );
+
+      ASSERT_EQ( host_errors(0) , 0 );
+    }
+};
+
+
+TEST_F( TEST_CATEGORY, unique_token )
+{
+  TestUniqueToken< TEST_EXECSPACE >::run();
+}
+
+} // namespace Test
+