Add test

core/unit_test/CMakeLists.txt

@@ -763,6 +763,12 @@ if(Kokkos_ENABLE_CUDA)
       UnitTestMain.cpp
       cuda/TestCuda_InterOp_Streams.cpp
   )
+  KOKKOS_ADD_EXECUTABLE_AND_TEST(
+    CoreUnitTest_CudaInterOpStreamsMultiGPU
+    SOURCES
+      UnitTestMain.cpp
+      cuda/TestCuda_InterOp_StreamsMultiGPU.cpp
+  )
   KOKKOS_ADD_EXECUTABLE_AND_TEST(
     CoreUnitTest_CudaGraph
     SOURCES

core/unit_test/cuda/TestCuda_InterOp_StreamsMultiGPU.cpp

@@ -0,0 +1,34 @@
+//@HEADER
+// ************************************************************************
+//
+//                        Kokkos v. 4.0
+//       Copyright (2022) 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.
+//
+// Part of Kokkos, under the Apache License v2.0 with LLVM Exceptions.
+// See https://kokkos.org/LICENSE for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//@HEADER
+
+#include <Kokkos_Core.hpp>
+#include <TestCuda_Category.hpp>
+#include <gtest/gtest.h>
+
+namespace Test {
+// Test Interoperability with Cuda Streams and muliple GPUs.
+TEST(cuda, raw_cuda_streams) {
+  Kokkos::ScopeGuard scope_guard;
+
+  cudaStream_t stream;
+  KOKKOS_IMPL_CUDA_SAFE_CALL(cudaStreamCreate(&stream));
+  {
+    TEST_EXECSPACE cuda_instance(TEST_EXECSPACE().cuda_device(), stream);
+    ASSERT_EQ(cuda_instance.cuda_device(), TEST_EXECSPACE().cuda_device());
+  }
+  KOKKOS_IMPL_CUDA_SAFE_CALL(cudaStreamDestroy(stream));
+}
+}  // namespace Test