Bugfixes for the ipc unit tests

src/ipc_policy.hpp

@@ -64,7 +64,7 @@ class IpcOnImpl {
 
   __device__ void ipcCopy_wave(void *dst, void *src, size_t size);
 
-  __device__ void ipcFence() { __threadfence(); }
+  __device__ void ipcFence() { __threadfence_system(); }
 
   template <typename T>
   __device__ T ipcAMOFetchAdd(T *val, T value) {

src/memory/notifier.hpp

@@ -98,6 +98,14 @@ class NotifierProxy {
   using ProxyT = DeviceProxy<ALLOCATOR, Notifier<scope>>;
 
  public:
+  NotifierProxy() {
+    new (proxy_.get()) Notifier<scope>();
+  }
+
+  ~NotifierProxy() {
+    proxy_.get()->~Notifier<scope>();
+  }
+
   __host__ __device__ Notifier<scope>* get() { return proxy_.get(); }
 
  private: