Merge pull request #1872 from npmiller/revert-access-by

Revert use of ACCESSED_BY for managed memory

Author: kbenzie

source/adapters/cuda/usm.cpp

@@ -150,27 +150,15 @@ ur_result_t USMDeviceAllocImpl(void **ResultPtr, ur_context_handle_t,
   return UR_RESULT_SUCCESS;
 }
 
-ur_result_t USMSharedAllocImpl(void **ResultPtr, ur_context_handle_t Context,
-                               ur_device_handle_t CommandDevice,
+ur_result_t USMSharedAllocImpl(void **ResultPtr, ur_context_handle_t,
+                               ur_device_handle_t Device,
                                ur_usm_host_mem_flags_t,
                                ur_usm_device_mem_flags_t, size_t Size,
                                uint32_t Alignment) {
   try {
-    ScopedContext Active(CommandDevice);
+    ScopedContext Active(Device);
     UR_CHECK_ERROR(cuMemAllocManaged((CUdeviceptr *)ResultPtr, Size,
                                      CU_MEM_ATTACH_GLOBAL));
-    if (getAttribute(CommandDevice,
-                     CU_DEVICE_ATTRIBUTE_CONCURRENT_MANAGED_ACCESS)) {
-      UR_CHECK_ERROR(cuMemAdvise((CUdeviceptr)*ResultPtr, Size,
-                                 CU_MEM_ADVISE_SET_ACCESSED_BY,
-                                 CommandDevice->get()));
-    }
-    for (const auto &Dev : Context->getDevices()) {
-      if (getAttribute(Dev, CU_DEVICE_ATTRIBUTE_CONCURRENT_MANAGED_ACCESS)) {
-        UR_CHECK_ERROR(cuMemAdvise((CUdeviceptr)*ResultPtr, Size,
-                                   CU_MEM_ADVISE_SET_ACCESSED_BY, Dev->get()));
-      }
-    }
   } catch (ur_result_t Err) {
     return Err;
   }