diff --git a/sycl/plugins/unified_runtime/CMakeLists.txt b/sycl/plugins/unified_runtime/CMakeLists.txt
index bf6107c1f252c..12b3ac81046ea 100644
--- a/sycl/plugins/unified_runtime/CMakeLists.txt
+++ b/sycl/plugins/unified_runtime/CMakeLists.txt
@@ -4,7 +4,7 @@ if (NOT DEFINED UNIFIED_RUNTIME_LIBRARY OR NOT DEFINED UNIFIED_RUNTIME_INCLUDE_D
   include(FetchContent)
 
   set(UNIFIED_RUNTIME_REPO "https://github.com/oneapi-src/unified-runtime.git")
-  set(UNIFIED_RUNTIME_TAG b3cc9ae3f99ca7faff1ba765dd36652fef2cfddd)
+  set(UNIFIED_RUNTIME_TAG a346a301d776bc72c228d26fbf54af99c6ade1bf)
 
   message(STATUS "Will fetch Unified Runtime from ${UNIFIED_RUNTIME_REPO}")
   FetchContent_Declare(unified-runtime
diff --git a/sycl/plugins/unified_runtime/pi2ur.hpp b/sycl/plugins/unified_runtime/pi2ur.hpp
index daa7543b96443..cc863b83a3658 100644
--- a/sycl/plugins/unified_runtime/pi2ur.hpp
+++ b/sycl/plugins/unified_runtime/pi2ur.hpp
@@ -787,11 +787,6 @@ inline pi_result piTearDown(void *PluginParameter) {
     }
   });
   HANDLE_ERRORS(Ret);
-
-  // TODO: Dont check for errors in urTearDown, since
-  // when using Level Zero plugin, the second urTearDown
-  // will fail as ur_loader.so has already been unloaded,
-  urTearDown(nullptr);
   return PI_SUCCESS;
 }
 
@@ -799,8 +794,6 @@ inline pi_result piTearDown(void *PluginParameter) {
 // Platform
 inline pi_result piPlatformsGet(pi_uint32 NumEntries, pi_platform *Platforms,
                                 pi_uint32 *NumPlatforms) {
-
-  urInit(0, nullptr);
   // We're not going through the UR loader so we're guaranteed to have exactly
   // one adapter (whichever is statically linked). The PI plugin for UR has its
   // own implementation of piPlatformsGet.
@@ -4347,7 +4340,7 @@ inline pi_result piextCommandBufferMemcpyUSM(
   ur_exp_command_buffer_handle_t UrCommandBuffer =
       reinterpret_cast<ur_exp_command_buffer_handle_t>(CommandBuffer);
 
-  HANDLE_ERRORS(urCommandBufferAppendMemcpyUSMExp(
+  HANDLE_ERRORS(urCommandBufferAppendUSMMemcpyExp(
       UrCommandBuffer, DstPtr, SrcPtr, Size, NumSyncPointsInWaitList,
       SyncPointWaitList, SyncPoint));
 
@@ -4365,7 +4358,7 @@ inline pi_result piextCommandBufferMemBufferCopy(
   ur_mem_handle_t UrSrcMem = reinterpret_cast<ur_mem_handle_t>(SrcMem);
   ur_mem_handle_t UrDstMem = reinterpret_cast<ur_mem_handle_t>(DstMem);
 
-  HANDLE_ERRORS(urCommandBufferAppendMembufferCopyExp(
+  HANDLE_ERRORS(urCommandBufferAppendMemBufferCopyExp(
       UrCommandBuffer, UrSrcMem, UrDstMem, SrcOffset, DstOffset, Size,
       NumSyncPointsInWaitList, SyncPointWaitList, SyncPoint));
 
@@ -4393,7 +4386,7 @@ inline pi_result piextCommandBufferMemBufferCopyRect(
   UrRegion.height = Region->height_scalar;
   UrRegion.width = Region->width_bytes;
 
-  HANDLE_ERRORS(urCommandBufferAppendMembufferCopyRectExp(
+  HANDLE_ERRORS(urCommandBufferAppendMemBufferCopyRectExp(
       UrCommandBuffer, UrSrcMem, UrDstMem, UrSrcOrigin, UrDstOrigin, UrRegion,
       SrcRowPitch, SrcSlicePitch, DstRowPitch, DstSlicePitch,
       NumSyncPointsInWaitList, SyncPointWaitList, SyncPoint));
@@ -4423,7 +4416,7 @@ inline pi_result piextCommandBufferMemBufferReadRect(
   UrRegion.height = Region->height_scalar;
   UrRegion.width = Region->width_bytes;
 
-  HANDLE_ERRORS(urCommandBufferAppendMembufferReadRectExp(
+  HANDLE_ERRORS(urCommandBufferAppendMemBufferReadRectExp(
       UrCommandBuffer, UrBuffer, UrBufferOffset, UrHostOffset, UrRegion,
       BufferRowPitch, BufferSlicePitch, HostRowPitch, HostSlicePitch, Ptr,
       NumSyncPointsInWaitList, SyncPointWaitList, SyncPoint));
@@ -4441,7 +4434,7 @@ inline pi_result piextCommandBufferMemBufferRead(
       reinterpret_cast<ur_exp_command_buffer_handle_t>(CommandBuffer);
   ur_mem_handle_t UrBuffer = reinterpret_cast<ur_mem_handle_t>(Src);
 
-  HANDLE_ERRORS(urCommandBufferAppendMembufferReadExp(
+  HANDLE_ERRORS(urCommandBufferAppendMemBufferReadExp(
       UrCommandBuffer, UrBuffer, Offset, Size, Dst, NumSyncPointsInWaitList,
       SyncPointWaitList, SyncPoint));
 
@@ -4470,7 +4463,7 @@ inline pi_result piextCommandBufferMemBufferWriteRect(
   UrRegion.height = Region->height_scalar;
   UrRegion.width = Region->width_bytes;
 
-  HANDLE_ERRORS(urCommandBufferAppendMembufferWriteRectExp(
+  HANDLE_ERRORS(urCommandBufferAppendMemBufferWriteRectExp(
       UrCommandBuffer, UrBuffer, UrBufferOffset, UrHostOffset, UrRegion,
       BufferRowPitch, BufferSlicePitch, HostRowPitch, HostSlicePitch,
       const_cast<void *>(Ptr), NumSyncPointsInWaitList, SyncPointWaitList,
@@ -4490,7 +4483,7 @@ inline pi_result piextCommandBufferMemBufferWrite(
       reinterpret_cast<ur_exp_command_buffer_handle_t>(CommandBuffer);
   ur_mem_handle_t UrBuffer = reinterpret_cast<ur_mem_handle_t>(Buffer);
 
-  HANDLE_ERRORS(urCommandBufferAppendMembufferWriteExp(
+  HANDLE_ERRORS(urCommandBufferAppendMemBufferWriteExp(
       UrCommandBuffer, UrBuffer, Offset, Size, const_cast<void *>(Ptr),
       NumSyncPointsInWaitList, SyncPointWaitList, SyncPoint));
 
diff --git a/sycl/plugins/unified_runtime/pi_unified_runtime.cpp b/sycl/plugins/unified_runtime/pi_unified_runtime.cpp
index 9c90442e75047..cc76443721333 100644
--- a/sycl/plugins/unified_runtime/pi_unified_runtime.cpp
+++ b/sycl/plugins/unified_runtime/pi_unified_runtime.cpp
@@ -25,7 +25,7 @@ static void releaseAdapters(std::vector<ur_adapter_handle_t> &Vec) {
     for (auto Adapter : Vec) {
       urAdapterRelease(Adapter);
     }
-    urTearDown(nullptr);
+    urLoaderTearDown();
   });
 }
 
@@ -1146,7 +1146,7 @@ __SYCL_EXPORT pi_result piextPeerAccessGetInfo(
 
 __SYCL_EXPORT pi_result piTearDown(void *) {
   releaseAdapters(Adapters.Vec);
-  urTearDown(nullptr);
+  urLoaderTearDown();
   return PI_SUCCESS;
 }
 
@@ -1303,7 +1303,7 @@ __SYCL_EXPORT pi_result piPluginInit(pi_plugin *PluginInit) {
   strncpy(PluginInit->PluginVersion, SupportedVersion, PluginVersionSize);
 
   // Initialize UR and discover adapters
-  HANDLE_ERRORS(urInit(0, nullptr));
+  HANDLE_ERRORS(urLoaderInit(0, nullptr));
   uint32_t NumAdapters;
   HANDLE_ERRORS(urAdapterGet(0, nullptr, &NumAdapters));
   if (NumAdapters > 0) {
diff --git a/sycl/plugins/unified_runtime/ur/adapters/cuda/adapter.cpp b/sycl/plugins/unified_runtime/ur/adapters/cuda/adapter.cpp
index e1179f487d4fd..e690e18edfc0f 100644
--- a/sycl/plugins/unified_runtime/ur/adapters/cuda/adapter.cpp
+++ b/sycl/plugins/unified_runtime/ur/adapters/cuda/adapter.cpp
@@ -20,15 +20,6 @@ struct ur_adapter_handle_t_ {
 
 ur_adapter_handle_t_ adapter{};
 
-UR_APIEXPORT ur_result_t UR_APICALL urInit(ur_device_init_flags_t,
-                                           ur_loader_config_handle_t) {
-  return UR_RESULT_SUCCESS;
-}
-
-UR_APIEXPORT ur_result_t UR_APICALL urTearDown(void *) {
-  return UR_RESULT_SUCCESS;
-}
-
 UR_APIEXPORT ur_result_t UR_APICALL
 urAdapterGet(uint32_t NumEntries, ur_adapter_handle_t *phAdapters,
              uint32_t *pNumAdapters) {
diff --git a/sycl/plugins/unified_runtime/ur/adapters/cuda/command_buffer.cpp b/sycl/plugins/unified_runtime/ur/adapters/cuda/command_buffer.cpp
index e2e1784d13e5b..d7704526fb296 100644
--- a/sycl/plugins/unified_runtime/ur/adapters/cuda/command_buffer.cpp
+++ b/sycl/plugins/unified_runtime/ur/adapters/cuda/command_buffer.cpp
@@ -73,7 +73,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendKernelLaunchExp(
   return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemcpyUSMExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendUSMMemcpyExp(
     ur_exp_command_buffer_handle_t hCommandBuffer, void *pDst, const void *pSrc,
     size_t size, uint32_t numSyncPointsInWaitList,
     const ur_exp_command_buffer_sync_point_t *pSyncPointWaitList,
@@ -91,7 +91,16 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemcpyUSMExp(
   return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendUSMFillExp(
+    ur_exp_command_buffer_handle_t, void *, const void *, size_t, size_t,
+    uint32_t, const ur_exp_command_buffer_sync_point_t *,
+    ur_exp_command_buffer_sync_point_t *) {
+  detail::ur::die("Experimental Command-buffer feature is not "
+                  "implemented for CUDA adapter.");
+  return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
+}
+
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferCopyExp(
     ur_exp_command_buffer_handle_t hCommandBuffer, ur_mem_handle_t hSrcMem,
     ur_mem_handle_t hDstMem, size_t srcOffset, size_t dstOffset, size_t size,
     uint32_t numSyncPointsInWaitList,
@@ -112,7 +121,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyExp(
   return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyRectExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferCopyRectExp(
     ur_exp_command_buffer_handle_t hCommandBuffer, ur_mem_handle_t hSrcMem,
     ur_mem_handle_t hDstMem, ur_rect_offset_t srcOrigin,
     ur_rect_offset_t dstOrigin, ur_rect_region_t region, size_t srcRowPitch,
@@ -140,7 +149,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyRectExp(
 }
 
 UR_APIEXPORT
-ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteExp(
+ur_result_t UR_APICALL urCommandBufferAppendMemBufferWriteExp(
     ur_exp_command_buffer_handle_t hCommandBuffer, ur_mem_handle_t hBuffer,
     size_t offset, size_t size, const void *pSrc,
     uint32_t numSyncPointsInWaitList,
@@ -161,7 +170,7 @@ ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteExp(
 }
 
 UR_APIEXPORT
-ur_result_t UR_APICALL urCommandBufferAppendMembufferReadExp(
+ur_result_t UR_APICALL urCommandBufferAppendMemBufferReadExp(
     ur_exp_command_buffer_handle_t hCommandBuffer, ur_mem_handle_t hBuffer,
     size_t offset, size_t size, void *pDst, uint32_t numSyncPointsInWaitList,
     const ur_exp_command_buffer_sync_point_t *pSyncPointWaitList,
@@ -181,7 +190,7 @@ ur_result_t UR_APICALL urCommandBufferAppendMembufferReadExp(
 }
 
 UR_APIEXPORT
-ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteRectExp(
+ur_result_t UR_APICALL urCommandBufferAppendMemBufferWriteRectExp(
     ur_exp_command_buffer_handle_t hCommandBuffer, ur_mem_handle_t hBuffer,
     ur_rect_offset_t bufferOffset, ur_rect_offset_t hostOffset,
     ur_rect_region_t region, size_t bufferRowPitch, size_t bufferSlicePitch,
@@ -209,7 +218,7 @@ ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteRectExp(
 }
 
 UR_APIEXPORT
-ur_result_t UR_APICALL urCommandBufferAppendMembufferReadRectExp(
+ur_result_t UR_APICALL urCommandBufferAppendMemBufferReadRectExp(
     ur_exp_command_buffer_handle_t hCommandBuffer, ur_mem_handle_t hBuffer,
     ur_rect_offset_t bufferOffset, ur_rect_offset_t hostOffset,
     ur_rect_region_t region, size_t bufferRowPitch, size_t bufferSlicePitch,
@@ -251,3 +260,12 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferEnqueueExp(
                   "implemented for CUDA adapter.");
   return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
 }
+
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferFillExp(
+    ur_exp_command_buffer_handle_t, ur_mem_handle_t, const void *, size_t,
+    size_t, size_t, uint32_t, const ur_exp_command_buffer_sync_point_t *,
+    ur_exp_command_buffer_sync_point_t *) {
+  detail::ur::die("Experimental Command-buffer feature is not "
+                  "implemented for CUDA adapter.");
+  return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
+}
diff --git a/sycl/plugins/unified_runtime/ur/adapters/cuda/ur_interface_loader.cpp b/sycl/plugins/unified_runtime/ur/adapters/cuda/ur_interface_loader.cpp
index c7244fa3ec32a..7b69f86591d85 100644
--- a/sycl/plugins/unified_runtime/ur/adapters/cuda/ur_interface_loader.cpp
+++ b/sycl/plugins/unified_runtime/ur/adapters/cuda/ur_interface_loader.cpp
@@ -200,8 +200,6 @@ UR_DLLEXPORT ur_result_t UR_APICALL urGetGlobalProcAddrTable(
   if (UR_RESULT_SUCCESS != result) {
     return result;
   }
-  pDdiTable->pfnInit = urInit;
-  pDdiTable->pfnTearDown = urTearDown;
   pDdiTable->pfnAdapterGet = urAdapterGet;
   pDdiTable->pfnAdapterRelease = urAdapterRelease;
   pDdiTable->pfnAdapterRetain = urAdapterRetain;
@@ -278,17 +276,19 @@ UR_DLLEXPORT ur_result_t UR_APICALL urGetCommandBufferExpProcAddrTable(
   pDdiTable->pfnReleaseExp = urCommandBufferReleaseExp;
   pDdiTable->pfnFinalizeExp = urCommandBufferFinalizeExp;
   pDdiTable->pfnAppendKernelLaunchExp = urCommandBufferAppendKernelLaunchExp;
-  pDdiTable->pfnAppendMemcpyUSMExp = urCommandBufferAppendMemcpyUSMExp;
-  pDdiTable->pfnAppendMembufferCopyExp = urCommandBufferAppendMembufferCopyExp;
-  pDdiTable->pfnAppendMembufferCopyRectExp =
-      urCommandBufferAppendMembufferCopyRectExp;
-  pDdiTable->pfnAppendMembufferReadExp = urCommandBufferAppendMembufferReadExp;
-  pDdiTable->pfnAppendMembufferReadRectExp =
-      urCommandBufferAppendMembufferReadRectExp;
-  pDdiTable->pfnAppendMembufferWriteExp =
-      urCommandBufferAppendMembufferWriteExp;
-  pDdiTable->pfnAppendMembufferWriteRectExp =
-      urCommandBufferAppendMembufferWriteRectExp;
+  pDdiTable->pfnAppendUSMMemcpyExp = urCommandBufferAppendUSMMemcpyExp;
+  pDdiTable->pfnAppendUSMFillExp = urCommandBufferAppendUSMFillExp;
+  pDdiTable->pfnAppendMemBufferCopyExp = urCommandBufferAppendMemBufferCopyExp;
+  pDdiTable->pfnAppendMemBufferCopyRectExp =
+      urCommandBufferAppendMemBufferCopyRectExp;
+  pDdiTable->pfnAppendMemBufferReadExp = urCommandBufferAppendMemBufferReadExp;
+  pDdiTable->pfnAppendMemBufferReadRectExp =
+      urCommandBufferAppendMemBufferReadRectExp;
+  pDdiTable->pfnAppendMemBufferWriteExp =
+      urCommandBufferAppendMemBufferWriteExp;
+  pDdiTable->pfnAppendMemBufferWriteRectExp =
+      urCommandBufferAppendMemBufferWriteRectExp;
+  pDdiTable->pfnAppendMemBufferFillExp = urCommandBufferAppendMemBufferFillExp;
   pDdiTable->pfnEnqueueExp = urCommandBufferEnqueueExp;
 
   return retVal;
diff --git a/sycl/plugins/unified_runtime/ur/adapters/hip/adapter.cpp b/sycl/plugins/unified_runtime/ur/adapters/hip/adapter.cpp
index 9854b5d96d3ae..13ef23a925742 100644
--- a/sycl/plugins/unified_runtime/ur/adapters/hip/adapter.cpp
+++ b/sycl/plugins/unified_runtime/ur/adapters/hip/adapter.cpp
@@ -18,15 +18,6 @@ struct ur_adapter_handle_t_ {
 
 ur_adapter_handle_t_ adapter{};
 
-UR_APIEXPORT ur_result_t UR_APICALL urInit(ur_device_init_flags_t,
-                                           ur_loader_config_handle_t) {
-  return UR_RESULT_SUCCESS;
-}
-
-UR_APIEXPORT ur_result_t UR_APICALL urTearDown(void *) {
-  return UR_RESULT_SUCCESS;
-}
-
 UR_APIEXPORT ur_result_t UR_APICALL urAdapterGet(
     uint32_t, ur_adapter_handle_t *phAdapters, uint32_t *pNumAdapters) {
   if (phAdapters) {
diff --git a/sycl/plugins/unified_runtime/ur/adapters/hip/command_buffer.cpp b/sycl/plugins/unified_runtime/ur/adapters/hip/command_buffer.cpp
index 305664ea13286..8fac75d93115f 100644
--- a/sycl/plugins/unified_runtime/ur/adapters/hip/command_buffer.cpp
+++ b/sycl/plugins/unified_runtime/ur/adapters/hip/command_buffer.cpp
@@ -50,7 +50,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendKernelLaunchExp(
   return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemcpyUSMExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendUSMMemcpyExp(
     ur_exp_command_buffer_handle_t, void *, const void *, size_t, uint32_t,
     const ur_exp_command_buffer_sync_point_t *,
     ur_exp_command_buffer_sync_point_t *) {
@@ -59,7 +59,25 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemcpyUSMExp(
   return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendUSMFillExp(
+    ur_exp_command_buffer_handle_t, void *, const void *, size_t, size_t,
+    uint32_t, const ur_exp_command_buffer_sync_point_t *,
+    ur_exp_command_buffer_sync_point_t *) {
+  detail::ur::die("Experimental Command-buffer feature is not implemented for "
+                  "HIP adapter.");
+  return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
+}
+
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferFillExp(
+    ur_exp_command_buffer_handle_t, ur_mem_handle_t, const void *, size_t,
+    size_t, size_t, uint32_t, const ur_exp_command_buffer_sync_point_t *,
+    ur_exp_command_buffer_sync_point_t *) {
+  detail::ur::die("Experimental Command-buffer feature is not implemented for "
+                  "HIP adapter.");
+  return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
+}
+
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferCopyExp(
     ur_exp_command_buffer_handle_t, ur_mem_handle_t, ur_mem_handle_t, size_t,
     size_t, size_t, uint32_t, const ur_exp_command_buffer_sync_point_t *,
     ur_exp_command_buffer_sync_point_t *) {
@@ -68,7 +86,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyExp(
   return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyRectExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferCopyRectExp(
     ur_exp_command_buffer_handle_t, ur_mem_handle_t, ur_mem_handle_t,
     ur_rect_offset_t, ur_rect_offset_t, ur_rect_region_t, size_t, size_t,
     size_t, size_t, uint32_t, const ur_exp_command_buffer_sync_point_t *,
@@ -79,7 +97,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyRectExp(
 }
 
 UR_APIEXPORT
-ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteExp(
+ur_result_t UR_APICALL urCommandBufferAppendMemBufferWriteExp(
     ur_exp_command_buffer_handle_t, ur_mem_handle_t, size_t, size_t,
     const void *, uint32_t, const ur_exp_command_buffer_sync_point_t *,
     ur_exp_command_buffer_sync_point_t *) {
@@ -89,7 +107,7 @@ ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteExp(
 }
 
 UR_APIEXPORT
-ur_result_t UR_APICALL urCommandBufferAppendMembufferReadExp(
+ur_result_t UR_APICALL urCommandBufferAppendMemBufferReadExp(
     ur_exp_command_buffer_handle_t, ur_mem_handle_t, size_t, size_t, void *,
     uint32_t, const ur_exp_command_buffer_sync_point_t *,
     ur_exp_command_buffer_sync_point_t *) {
@@ -99,7 +117,7 @@ ur_result_t UR_APICALL urCommandBufferAppendMembufferReadExp(
 }
 
 UR_APIEXPORT
-ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteRectExp(
+ur_result_t UR_APICALL urCommandBufferAppendMemBufferWriteRectExp(
     ur_exp_command_buffer_handle_t, ur_mem_handle_t, ur_rect_offset_t,
     ur_rect_offset_t, ur_rect_region_t, size_t, size_t, size_t, size_t, void *,
     uint32_t, const ur_exp_command_buffer_sync_point_t *,
@@ -110,7 +128,7 @@ ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteRectExp(
 }
 
 UR_APIEXPORT
-ur_result_t UR_APICALL urCommandBufferAppendMembufferReadRectExp(
+ur_result_t UR_APICALL urCommandBufferAppendMemBufferReadRectExp(
     ur_exp_command_buffer_handle_t, ur_mem_handle_t, ur_rect_offset_t,
     ur_rect_offset_t, ur_rect_region_t, size_t, size_t, size_t, size_t, void *,
     uint32_t, const ur_exp_command_buffer_sync_point_t *,
diff --git a/sycl/plugins/unified_runtime/ur/adapters/hip/ur_interface_loader.cpp b/sycl/plugins/unified_runtime/ur/adapters/hip/ur_interface_loader.cpp
index 3bea2c7c427ee..f0c602353e478 100644
--- a/sycl/plugins/unified_runtime/ur/adapters/hip/ur_interface_loader.cpp
+++ b/sycl/plugins/unified_runtime/ur/adapters/hip/ur_interface_loader.cpp
@@ -200,9 +200,6 @@ UR_DLLEXPORT ur_result_t UR_APICALL urGetGlobalProcAddrTable(
   if (UR_RESULT_SUCCESS != result) {
     return result;
   }
-
-  pDdiTable->pfnInit = urInit;
-  pDdiTable->pfnTearDown = urTearDown;
   pDdiTable->pfnAdapterGet = urAdapterGet;
   pDdiTable->pfnAdapterGetInfo = urAdapterGetInfo;
   pDdiTable->pfnAdapterGetLastError = urAdapterGetLastError;
@@ -276,17 +273,19 @@ UR_DLLEXPORT ur_result_t UR_APICALL urGetCommandBufferExpProcAddrTable(
   pDdiTable->pfnReleaseExp = urCommandBufferReleaseExp;
   pDdiTable->pfnFinalizeExp = urCommandBufferFinalizeExp;
   pDdiTable->pfnAppendKernelLaunchExp = urCommandBufferAppendKernelLaunchExp;
-  pDdiTable->pfnAppendMemcpyUSMExp = urCommandBufferAppendMemcpyUSMExp;
-  pDdiTable->pfnAppendMembufferCopyExp = urCommandBufferAppendMembufferCopyExp;
-  pDdiTable->pfnAppendMembufferCopyRectExp =
-      urCommandBufferAppendMembufferCopyRectExp;
-  pDdiTable->pfnAppendMembufferReadExp = urCommandBufferAppendMembufferReadExp;
-  pDdiTable->pfnAppendMembufferReadRectExp =
-      urCommandBufferAppendMembufferReadRectExp;
-  pDdiTable->pfnAppendMembufferWriteExp =
-      urCommandBufferAppendMembufferWriteExp;
-  pDdiTable->pfnAppendMembufferWriteRectExp =
-      urCommandBufferAppendMembufferWriteRectExp;
+  pDdiTable->pfnAppendUSMMemcpyExp = urCommandBufferAppendUSMMemcpyExp;
+  pDdiTable->pfnAppendUSMFillExp = urCommandBufferAppendUSMFillExp;
+  pDdiTable->pfnAppendMemBufferCopyExp = urCommandBufferAppendMemBufferCopyExp;
+  pDdiTable->pfnAppendMemBufferCopyRectExp =
+      urCommandBufferAppendMemBufferCopyRectExp;
+  pDdiTable->pfnAppendMemBufferReadExp = urCommandBufferAppendMemBufferReadExp;
+  pDdiTable->pfnAppendMemBufferReadRectExp =
+      urCommandBufferAppendMemBufferReadRectExp;
+  pDdiTable->pfnAppendMemBufferWriteExp =
+      urCommandBufferAppendMemBufferWriteExp;
+  pDdiTable->pfnAppendMemBufferWriteRectExp =
+      urCommandBufferAppendMemBufferWriteRectExp;
+  pDdiTable->pfnAppendMemBufferFillExp = urCommandBufferAppendMemBufferFillExp;
   pDdiTable->pfnEnqueueExp = urCommandBufferEnqueueExp;
 
   return retVal;
diff --git a/sycl/plugins/unified_runtime/ur/adapters/level_zero/adapter.cpp b/sycl/plugins/unified_runtime/ur/adapters/level_zero/adapter.cpp
index 5c1d2af606d95..5a463598646d0 100644
--- a/sycl/plugins/unified_runtime/ur/adapters/level_zero/adapter.cpp
+++ b/sycl/plugins/unified_runtime/ur/adapters/level_zero/adapter.cpp
@@ -11,17 +11,6 @@
 
 ur_adapter_handle_t_ Adapter{};
 
-UR_APIEXPORT ur_result_t UR_APICALL
-urInit(ur_device_init_flags_t
-           DeviceFlags, ///< [in] device initialization flags.
-                        ///< must be 0 (default) or a combination of
-                        ///< ::ur_device_init_flag_t.
-       ur_loader_config_handle_t) {
-  std::ignore = DeviceFlags;
-
-  return UR_RESULT_SUCCESS;
-}
-
 ur_result_t adapterStateTeardown() {
   // reclaim ur_platform_handle_t objects here since we don't have
   // urPlatformRelease.
@@ -120,13 +109,6 @@ ur_result_t adapterStateTeardown() {
   return UR_RESULT_SUCCESS;
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urTearDown(
-    void *Params ///< [in] pointer to tear down parameters
-) {
-  std::ignore = Params;
-  return UR_RESULT_SUCCESS;
-}
-
 UR_APIEXPORT ur_result_t UR_APICALL urAdapterGet(
     uint32_t NumEntries, ///< [in] the number of platforms to be added to
                          ///< phAdapters. If phAdapters is not NULL, then
diff --git a/sycl/plugins/unified_runtime/ur/adapters/level_zero/command_buffer.cpp b/sycl/plugins/unified_runtime/ur/adapters/level_zero/command_buffer.cpp
index 998b4e0ea290c..4afed5aeee241 100644
--- a/sycl/plugins/unified_runtime/ur/adapters/level_zero/command_buffer.cpp
+++ b/sycl/plugins/unified_runtime/ur/adapters/level_zero/command_buffer.cpp
@@ -521,7 +521,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendKernelLaunchExp(
   return UR_RESULT_SUCCESS;
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemcpyUSMExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendUSMMemcpyExp(
     ur_exp_command_buffer_handle_t CommandBuffer, void *Dst, const void *Src,
     size_t Size, uint32_t NumSyncPointsInWaitList,
     const ur_exp_command_buffer_sync_point_t *SyncPointWaitList,
@@ -531,7 +531,14 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemcpyUSMExp(
       NumSyncPointsInWaitList, SyncPointWaitList, SyncPoint);
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendUSMFillExp(
+    ur_exp_command_buffer_handle_t, void *, const void *, size_t, size_t,
+    uint32_t, const ur_exp_command_buffer_sync_point_t *,
+    ur_exp_command_buffer_sync_point_t *) {
+  return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
+}
+
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferCopyExp(
     ur_exp_command_buffer_handle_t CommandBuffer, ur_mem_handle_t SrcMem,
     ur_mem_handle_t DstMem, size_t SrcOffset, size_t DstOffset, size_t Size,
     uint32_t NumSyncPointsInWaitList,
@@ -557,7 +564,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyExp(
       SyncPoint);
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyRectExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferCopyRectExp(
     ur_exp_command_buffer_handle_t CommandBuffer, ur_mem_handle_t SrcMem,
     ur_mem_handle_t DstMem, ur_rect_offset_t SrcOrigin,
     ur_rect_offset_t DstOrigin, ur_rect_region_t Region, size_t SrcRowPitch,
@@ -585,7 +592,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyRectExp(
       DstSlicePitch, NumSyncPointsInWaitList, SyncPointWaitList, SyncPoint);
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferWriteExp(
     ur_exp_command_buffer_handle_t CommandBuffer, ur_mem_handle_t Buffer,
     size_t Offset, size_t Size, const void *Src,
     uint32_t NumSyncPointsInWaitList,
@@ -604,7 +611,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteExp(
       Size, NumSyncPointsInWaitList, SyncPointWaitList, SyncPoint);
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteRectExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferWriteRectExp(
     ur_exp_command_buffer_handle_t CommandBuffer, ur_mem_handle_t Buffer,
     ur_rect_offset_t BufferOffset, ur_rect_offset_t HostOffset,
     ur_rect_region_t Region, size_t BufferRowPitch, size_t BufferSlicePitch,
@@ -624,7 +631,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteRectExp(
       BufferSlicePitch, NumSyncPointsInWaitList, SyncPointWaitList, SyncPoint);
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferReadExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferReadExp(
     ur_exp_command_buffer_handle_t CommandBuffer, ur_mem_handle_t Buffer,
     size_t Offset, size_t Size, void *Dst, uint32_t NumSyncPointsInWaitList,
     const ur_exp_command_buffer_sync_point_t *SyncPointWaitList,
@@ -639,7 +646,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferReadExp(
       Size, NumSyncPointsInWaitList, SyncPointWaitList, SyncPoint);
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferReadRectExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferReadRectExp(
     ur_exp_command_buffer_handle_t CommandBuffer, ur_mem_handle_t Buffer,
     ur_rect_offset_t BufferOffset, ur_rect_offset_t HostOffset,
     ur_rect_region_t Region, size_t BufferRowPitch, size_t BufferSlicePitch,
@@ -756,3 +763,10 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferEnqueueExp(
 
   return UR_RESULT_SUCCESS;
 }
+
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferFillExp(
+    ur_exp_command_buffer_handle_t, ur_mem_handle_t, const void *, size_t,
+    size_t, size_t, uint32_t, const ur_exp_command_buffer_sync_point_t *,
+    ur_exp_command_buffer_sync_point_t *) {
+  return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
+}
diff --git a/sycl/plugins/unified_runtime/ur/adapters/level_zero/ur_interface_loader.cpp b/sycl/plugins/unified_runtime/ur/adapters/level_zero/ur_interface_loader.cpp
index 23182a1af2971..1eb1dce71b647 100644
--- a/sycl/plugins/unified_runtime/ur/adapters/level_zero/ur_interface_loader.cpp
+++ b/sycl/plugins/unified_runtime/ur/adapters/level_zero/ur_interface_loader.cpp
@@ -30,9 +30,6 @@ UR_DLLEXPORT ur_result_t UR_APICALL urGetGlobalProcAddrTable(
   if (UR_RESULT_SUCCESS != retVal) {
     return retVal;
   }
-
-  pDdiTable->pfnInit = urInit;
-  pDdiTable->pfnTearDown = urTearDown;
   pDdiTable->pfnAdapterGet = urAdapterGet;
   pDdiTable->pfnAdapterRelease = urAdapterRelease;
   pDdiTable->pfnAdapterRetain = urAdapterRetain;
@@ -319,17 +316,19 @@ UR_DLLEXPORT ur_result_t UR_APICALL urGetCommandBufferExpProcAddrTable(
   pDdiTable->pfnReleaseExp = urCommandBufferReleaseExp;
   pDdiTable->pfnFinalizeExp = urCommandBufferFinalizeExp;
   pDdiTable->pfnAppendKernelLaunchExp = urCommandBufferAppendKernelLaunchExp;
-  pDdiTable->pfnAppendMemcpyUSMExp = urCommandBufferAppendMemcpyUSMExp;
-  pDdiTable->pfnAppendMembufferCopyExp = urCommandBufferAppendMembufferCopyExp;
-  pDdiTable->pfnAppendMembufferCopyRectExp =
-      urCommandBufferAppendMembufferCopyRectExp;
-  pDdiTable->pfnAppendMembufferReadExp = urCommandBufferAppendMembufferReadExp;
-  pDdiTable->pfnAppendMembufferReadRectExp =
-      urCommandBufferAppendMembufferReadRectExp;
-  pDdiTable->pfnAppendMembufferWriteExp =
-      urCommandBufferAppendMembufferWriteExp;
-  pDdiTable->pfnAppendMembufferWriteRectExp =
-      urCommandBufferAppendMembufferWriteRectExp;
+  pDdiTable->pfnAppendUSMMemcpyExp = urCommandBufferAppendUSMMemcpyExp;
+  pDdiTable->pfnAppendUSMFillExp = urCommandBufferAppendUSMFillExp;
+  pDdiTable->pfnAppendMemBufferCopyExp = urCommandBufferAppendMemBufferCopyExp;
+  pDdiTable->pfnAppendMemBufferCopyRectExp =
+      urCommandBufferAppendMemBufferCopyRectExp;
+  pDdiTable->pfnAppendMemBufferReadExp = urCommandBufferAppendMemBufferReadExp;
+  pDdiTable->pfnAppendMemBufferReadRectExp =
+      urCommandBufferAppendMemBufferReadRectExp;
+  pDdiTable->pfnAppendMemBufferWriteExp =
+      urCommandBufferAppendMemBufferWriteExp;
+  pDdiTable->pfnAppendMemBufferWriteRectExp =
+      urCommandBufferAppendMemBufferWriteRectExp;
+  pDdiTable->pfnAppendMemBufferFillExp = urCommandBufferAppendMemBufferFillExp;
   pDdiTable->pfnEnqueueExp = urCommandBufferEnqueueExp;
 
   return retVal;
diff --git a/sycl/plugins/unified_runtime/ur/adapters/native_cpu/adapter.cpp b/sycl/plugins/unified_runtime/ur/adapters/native_cpu/adapter.cpp
index dd046336a2532..1fac7e037a87a 100644
--- a/sycl/plugins/unified_runtime/ur/adapters/native_cpu/adapter.cpp
+++ b/sycl/plugins/unified_runtime/ur/adapters/native_cpu/adapter.cpp
@@ -13,15 +13,6 @@ struct ur_adapter_handle_t_ {
   std::atomic<uint32_t> RefCount = 0;
 } Adapter;
 
-UR_APIEXPORT ur_result_t UR_APICALL urInit(ur_device_init_flags_t,
-                                           ur_loader_config_handle_t) {
-  return UR_RESULT_SUCCESS;
-}
-
-UR_APIEXPORT ur_result_t UR_APICALL urTearDown(void *) {
-  return UR_RESULT_SUCCESS;
-}
-
 UR_APIEXPORT ur_result_t UR_APICALL urAdapterGet(
     uint32_t, ur_adapter_handle_t *phAdapters, uint32_t *pNumAdapters) {
   if (phAdapters) {
diff --git a/sycl/plugins/unified_runtime/ur/adapters/native_cpu/command_buffer.cpp b/sycl/plugins/unified_runtime/ur/adapters/native_cpu/command_buffer.cpp
index 15f311a0a9881..8631bd91a3393 100644
--- a/sycl/plugins/unified_runtime/ur/adapters/native_cpu/command_buffer.cpp
+++ b/sycl/plugins/unified_runtime/ur/adapters/native_cpu/command_buffer.cpp
@@ -61,7 +61,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemcpyUSMExp(
   return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferCopyExp(
     ur_exp_command_buffer_handle_t, ur_mem_handle_t, ur_mem_handle_t, size_t,
     size_t, size_t, uint32_t, const ur_exp_command_buffer_sync_point_t *,
     ur_exp_command_buffer_sync_point_t *) {
@@ -70,7 +70,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyExp(
   return UR_RESULT_ERROR_UNSUPPORTED_FEATURE;
 }
 
-UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyRectExp(
+UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMemBufferCopyRectExp(
     ur_exp_command_buffer_handle_t, ur_mem_handle_t, ur_mem_handle_t,
     ur_rect_offset_t, ur_rect_offset_t, ur_rect_region_t, size_t, size_t,
     size_t, size_t, uint32_t, const ur_exp_command_buffer_sync_point_t *,
@@ -81,7 +81,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferAppendMembufferCopyRectExp(
 }
 
 UR_APIEXPORT
-ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteExp(
+ur_result_t UR_APICALL urCommandBufferAppendMemBufferWriteExp(
     ur_exp_command_buffer_handle_t, ur_mem_handle_t, size_t, size_t,
     const void *, uint32_t, const ur_exp_command_buffer_sync_point_t *,
     ur_exp_command_buffer_sync_point_t *) {
@@ -91,7 +91,7 @@ ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteExp(
 }
 
 UR_APIEXPORT
-ur_result_t UR_APICALL urCommandBufferAppendMembufferReadExp(
+ur_result_t UR_APICALL urCommandBufferAppendMemBufferReadExp(
     ur_exp_command_buffer_handle_t, ur_mem_handle_t, size_t, size_t, void *,
     uint32_t, const ur_exp_command_buffer_sync_point_t *,
     ur_exp_command_buffer_sync_point_t *) {
@@ -101,7 +101,7 @@ ur_result_t UR_APICALL urCommandBufferAppendMembufferReadExp(
 }
 
 UR_APIEXPORT
-ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteRectExp(
+ur_result_t UR_APICALL urCommandBufferAppendMemBufferWriteRectExp(
     ur_exp_command_buffer_handle_t, ur_mem_handle_t, ur_rect_offset_t,
     ur_rect_offset_t, ur_rect_region_t, size_t, size_t, size_t, size_t, void *,
     uint32_t, const ur_exp_command_buffer_sync_point_t *,
@@ -112,7 +112,7 @@ ur_result_t UR_APICALL urCommandBufferAppendMembufferWriteRectExp(
 }
 
 UR_APIEXPORT
-ur_result_t UR_APICALL urCommandBufferAppendMembufferReadRectExp(
+ur_result_t UR_APICALL urCommandBufferAppendMemBufferReadRectExp(
     ur_exp_command_buffer_handle_t, ur_mem_handle_t, ur_rect_offset_t,
     ur_rect_offset_t, ur_rect_region_t, size_t, size_t, size_t, size_t, void *,
     uint32_t, const ur_exp_command_buffer_sync_point_t *,
diff --git a/sycl/plugins/unified_runtime/ur/adapters/native_cpu/ur_interface_loader.cpp b/sycl/plugins/unified_runtime/ur/adapters/native_cpu/ur_interface_loader.cpp
index abc52daead372..98c328d6f603f 100644
--- a/sycl/plugins/unified_runtime/ur/adapters/native_cpu/ur_interface_loader.cpp
+++ b/sycl/plugins/unified_runtime/ur/adapters/native_cpu/ur_interface_loader.cpp
@@ -198,8 +198,6 @@ UR_DLLEXPORT ur_result_t UR_APICALL urGetGlobalProcAddrTable(
   if (UR_RESULT_SUCCESS != result) {
     return result;
   }
-  pDdiTable->pfnInit = urInit;
-  pDdiTable->pfnTearDown = urTearDown;
   pDdiTable->pfnAdapterGet = urAdapterGet;
   pDdiTable->pfnAdapterGetInfo = urAdapterGetInfo;
   pDdiTable->pfnAdapterRelease = urAdapterRelease;