diff --git a/Exercises/instances/Begin/CMakeLists.txt b/Exercises/instances/Begin/CMakeLists.txt
new file mode 100644
index 00000000..9e64f321
--- /dev/null
+++ b/Exercises/instances/Begin/CMakeLists.txt
@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.22)
+project(KokkosTutorialExecInstances)
+include(../../common.cmake)
+
+add_executable(instances instances_begin.cpp)
+target_link_libraries(instances Kokkos::kokkos)
diff --git a/Exercises/instances/Begin/instances_begin.cpp b/Exercises/instances/Begin/instances_begin.cpp
index 1510ef1c..0c80e735 100644
--- a/Exercises/instances/Begin/instances_begin.cpp
+++ b/Exercises/instances/Begin/instances_begin.cpp
@@ -27,15 +27,7 @@ using ViewVectorType = Kokkos::View<double*>;
 using ViewMatrixType = Kokkos::View<double**>;
 
 // EXERCISE: We need later a new result type for reductions. What is it?
-//#ifdef KOKKOS_ENABLE_CUDA
-//#define RESULT_MEM_SPACE Kokkos::CudaHostPinnedSpace
-//#endif
-//#ifdef KOKKOS_ENABLE_HIP
-//#define RESULT_MEM_SPACE Kokkos::HIPHostPinnedSpace
-//#endif
-//#ifndef RESULT_MEM_SPACE
-//#define RESULT_MEM_SPACE Kokkos::HostSpace
-//#endif
+// using ResultMemSpace = 
 using ResultType = double;
 
 // EXERCISE: We need to pass in an instance
diff --git a/Exercises/instances/CMakeLists.txt b/Exercises/instances/CMakeLists.txt
deleted file mode 100644
index f02f488e..00000000
--- a/Exercises/instances/CMakeLists.txt
+++ /dev/null
@@ -1 +0,0 @@
-#Todo: Add CMake build 
diff --git a/Exercises/instances/Solution/CMakeLists.txt b/Exercises/instances/Solution/CMakeLists.txt
new file mode 100644
index 00000000..5c853cd1
--- /dev/null
+++ b/Exercises/instances/Solution/CMakeLists.txt
@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.22)
+project(KokkosTutorialExecInstances)
+include(../../common.cmake)
+
+add_executable(instances instances_solution.cpp)
+target_link_libraries(instances Kokkos::kokkos)
diff --git a/Exercises/instances/Solution/instances_solution.cpp b/Exercises/instances/Solution/instances_solution.cpp
index b6111043..f022f128 100644
--- a/Exercises/instances/Solution/instances_solution.cpp
+++ b/Exercises/instances/Solution/instances_solution.cpp
@@ -26,16 +26,8 @@ using range_policy = Kokkos::RangePolicy<ExecSpace>;
 using ViewVectorType = Kokkos::View<double*>;
 using ViewMatrixType = Kokkos::View<double**>;
 
-#ifdef KOKKOS_ENABLE_CUDA
-#define RESULT_MEM_SPACE Kokkos::CudaHostPinnedSpace
-#endif
-#ifdef KOKKOS_ENABLE_HIP
-#define RESULT_MEM_SPACE Kokkos::HIPHostPinnedSpace
-#endif
-#ifndef RESULT_MEM_SPACE
-#define RESULT_MEM_SPACE Kokkos::HostSpace
-#endif
-using ResultType = Kokkos::View<double, RESULT_MEM_SPACE>;
+using ResultMemSpace = Kokkos::SharedHostPinnedSpace;
+using ResultType = Kokkos::View<double, ResultMemSpace>;
 
 void operation(ExecSpace instance, ResultType result, ViewMatrixType A, ViewVectorType y, ViewVectorType x) {
   int N = x.extent(0);