[Storage_ipc] Provides IPC extensions for 3rd devices.

aten/src/ATen/detail/PrivateUse1HooksInterface.h

@@ -41,6 +41,24 @@ struct TORCH_API PrivateUse1HooksInterface : AcceleratorHooksInterface {
         false,
         "You should register `PrivateUse1HooksInterface` for PrivateUse1 before call `resizePrivateUse1Bytes`.");
   }
+
+  virtual void* Storage_shareDevice(void* self, void* noargs) const {
+    TORCH_CHECK_NOT_IMPLEMENTED(
+        false,
+        "You should register `PrivateUse1HooksInterface` for PrivateUse1 before call `Storage_sharedevice`.");
+  }
+
+  virtual void* Storage_newSharedDevice(void* _unused, void* args) const {
+    TORCH_CHECK_NOT_IMPLEMENTED(
+        false,
+        "You should register `PrivateUse1HooksInterface` for PrivateUse1 before call `Storage_newSharedDevice`.");
+  }
+
+  virtual void* Storage_releaseIPCCounterDevice(void* _unused, void* args) const {
+    TORCH_CHECK_NOT_IMPLEMENTED(
+        false,
+        "You should register `PrivateUse1HooksInterface` for PrivateUse1 before call `releaseIPCCounterDevice`.");
+  }
 };
 
 struct TORCH_API PrivateUse1HooksArgs {};

c10/core/StorageImpl.h

@@ -56,7 +56,7 @@ struct C10_API StorageImpl : public c10::intrusive_ptr_target {
         size_bytes_(std::move(size_bytes)),
         size_bytes_is_heap_allocated_(size_bytes_.is_heap_allocated()),
         resizable_(resizable),
-        received_cuda_(false),
+        received_device_(false),
         allocator_(allocator) {
     if (resizable) {
       TORCH_INTERNAL_ASSERT(
@@ -232,12 +232,12 @@ struct C10_API StorageImpl : public c10::intrusive_ptr_target {
 
   // This method can be used only after storage construction and cannot be used
   // to modify storage status
-  void set_received_cuda(bool received_cuda) {
-    received_cuda_ = received_cuda;
+  void set_received_device(bool received_device) {
+    received_device_ = received_device;
   }
 
-  bool received_cuda() {
-    return received_cuda_;
+  bool received_device() {
+    return received_device_;
   }
 
   impl::PyObjectSlot* pyobj_slot() {
@@ -294,7 +294,7 @@ struct C10_API StorageImpl : public c10::intrusive_ptr_target {
   bool resizable_;
   // Identifies that Storage was received from another process and doesn't have
   // local to process cuda memory allocation
-  bool received_cuda_;
+  bool received_device_;
   // All special checks in data/data_ptr calls are guarded behind this single
   // boolean. This is for performance: .data/.data_ptr calls are commonly in the
   // hot-path.

torch/csrc/StorageSharing.cpp

@@ -293,7 +293,7 @@ static PyObject* THPStorage_shareCuda(PyObject* self, PyObject* noargs) {
       "_share_cuda_: only available on CUDA");
   c10::StorageImpl* storage_impl = storage.unsafeGetStorageImpl();
 
-  if (storage_impl->received_cuda()) {
+  if (storage_impl->received_device()) {
     AT_ERROR(
         "Attempted to send CUDA tensor received from another process; this is not currently supported. Consider cloning before sending.");
   }
@@ -564,7 +564,7 @@ static PyObject* THPStorage_newSharedCuda(PyObject* _unused, PyObject* args) {
       /*resizable=*/false);
 
   base->set_resizable(false);
-  base->set_received_cuda(true);
+  base->set_received_device(true);
 
   return THPStorage_NewWithStorage(
       THPStorageClass,
@@ -651,13 +651,40 @@ PyObject* THPStorage_isShared(PyObject* self, PyObject* noargs) {
   }
 }
 
+
+// # Provides IPC extensions for third-party devices.
+static PyObject* THPStorage_shareDecice(PyObject* self, PyObject* noargs) {
+  at::globalContext().lazyInitPrivateUse1();
+  return (PyObject*)at::detail::getPrivateUse1Hooks().Storage_shareDevice(
+      self, noargs);
+}
+
+static PyObject* THPStorage_newSharedDevice(PyObject* _unused, PyObject* args) {
+  at::globalContext().lazyInitPrivateUse1();
+  return (PyObject*)at::detail::getPrivateUse1Hooks().Storage_newSharedDevice(
+      _unused, args);
+}
+
+static PyObject* THPStorage_releaseIPCCounterDevice(
+    PyObject* _unused,
+    PyObject* args) {
+  at::globalContext().lazyInitPrivateUse1();
+  return (PyObject*)at::detail::getPrivateUse1Hooks()
+      .Storage_releaseIPCCounterDevice(_unused, args);
+}
+
 // NOLINTNEXTLINE(cppcoreguidelines-avoid-c-arrays,modernize-avoid-c-arrays,cppcoreguidelines-avoid-non-const-global-variables)
 static PyMethodDef THPStorage_sharingMethods[] = {
     {"_new_with_weak_ptr",
      THPStorage_newWithWeakPtr,
      METH_O | METH_CLASS,
      nullptr},
+    {"_share_device_", THPStorage_shareDecice, METH_NOARGS, nullptr},
     {"_share_cuda_", THPStorage_shareCuda, METH_NOARGS, nullptr},
+    {"_new_shared_device",
+     THPStorage_newSharedDevice,
+     METH_VARARGS | METH_STATIC,
+     nullptr},
     {"_new_shared_cuda",
      THPStorage_newSharedCuda,
      METH_VARARGS | METH_STATIC,
@@ -666,6 +693,10 @@ static PyMethodDef THPStorage_sharingMethods[] = {
      THPStorage_releaseIPCCounter,
      METH_VARARGS | METH_STATIC,
      nullptr},
+    {"_release_ipc_counter_device",
+     THPStorage_releaseIPCCounterDevice,
+     METH_VARARGS | METH_STATIC,
+     nullptr},
     {"_share_fd_cpu_", THPStorage_shareFd, METH_NOARGS, nullptr},
     {"_new_shared_fd_cpu",
      THPStorage_newSharedFd,

torch/storage.py

@@ -63,6 +63,8 @@ def _new_shared_filename_cpu(cls: Type[T], manager, obj, size, *, device=None, d
     @classmethod
     def _release_ipc_counter_cuda(cls: Type[T], *args, **kwargs) -> T: ...  # type: ignore[empty-body] # noqa: E704
     @classmethod
+    def _release_ipc_counter_device(cls: Type[T], *args, **kwargs) -> T: ...  # type: ignore[empty-body] # noqa: E704
+    @classmethod
     def _new_with_weak_ptr(cls: Type[T], *args, **kwargs) -> T: ...  # type: ignore[empty-body] # noqa: E704
     def _shared_decref(self) -> T: ...  # type: ignore[empty-body, misc, type-var] # noqa: E704
     def _write_file(self, *args, **kwargs): ...  # noqa: E704
@@ -71,9 +73,12 @@ def _weak_ref(self, *args, **kwargs) -> T: ...  # type: ignore[empty-body, misc,
     def _set_from_file(self, *args, **kwargs): ...  # noqa: E704
     def _set_cdata(self, *args, **kwargs): ...  # noqa: E704
     def _share_cuda_(self, *args, **kwargs): ...  # noqa: E704
+    def _share_device_(self, *args, **kwargs): ...  # noqa: E704
     def is_shared(self) -> bool: ...  # type: ignore[empty-body] # noqa: E704
     @classmethod
     def _new_shared_cuda(cls: Type[T], *args, **kwargs) -> T: ...  # type: ignore[empty-body] # noqa: E704
+    @classmethod
+    def _new_shared_device(cls: Type[T], *args, **kwargs) -> T: ...  # type: ignore[empty-body] # noqa: E704
     def _shared_incref(self, *args, **kwargs): ...  # noqa: E704
     @classmethod
     def _free_weak_ref(cls, *args, **kwargs): ...  # noqa: E704

torch/utils/backend_registration.py

@@ -266,6 +266,26 @@ def wrap_storage_to(self, device=None, non_blocking=False):
     _check_register_once(torch.storage._StorageBase, custom_backend_name)
     setattr(torch.storage._StorageBase, custom_backend_name, wrap_storage_to)
 
+    # Provides IPC extensions for third-party devices.
+    _check_register_once(torch.storage._StorageBase,
+                         f'_share_{custom_backend_name}_')
+    # type: ignore[attr-defined]
+    setattr(torch.storage._StorageBase, f'_share_{custom_backend_name}_',
+            torch.StorageBase._share_device_)
+
+    _check_register_once(torch.storage._StorageBase,
+                         f'_new_shared_{custom_backend_name}')
+    # type: ignore[attr-defined]
+    setattr(torch.storage._StorageBase, f'_new_shared_{custom_backend_name}',
+            classmethod(torch.StorageBase._new_shared_device))
+
+    _check_register_once(torch.storage._StorageBase,
+                         f'_release_ipc_counter_{custom_backend_name}')
+    # type: ignore[attr-defined]
+    setattr(torch.storage._StorageBase,
+            f'_release_ipc_counter_{custom_backend_name}',
+            classmethod(torch.StorageBase._release_ipc_counter_device))
+
     # Register the corresponding attribute for the TypedStorage class.
     # When the TypedStorage class is removed, the registration is also removed.
 
@@ -290,6 +310,36 @@ def wrap_typed_storage_to(self: torch.storage.TypedStorage,
     _check_register_once(torch.TypedStorage, custom_backend_name)
     setattr(torch.TypedStorage, custom_backend_name, wrap_typed_storage_to)
 
+    # Provides IPC extensions for third-party devices.
+    # type: ignore[attr-defined]
+    def wrap_typed_storage_share(self, *args, **kwargs):
+        return self._untyped_storage._share_device_(*args, **kwargs)
+
+    _check_register_once(torch.TypedStorage, f'_share_{custom_backend_name}_')
+    setattr(torch.TypedStorage, f'_share_{custom_backend_name}_',
+            wrap_typed_storage_share)
+
+    # type: ignore[attr-defined]
+    def wrap_typed_storage_new_shared(cls, *args, **kwargs):
+        return torch.UntypedStorage._new_shared_device(*args, **kwargs)
+
+    _check_register_once(torch.TypedStorage,
+                         f'_new_shared_{custom_backend_name}')
+    setattr(torch.TypedStorage, f'_new_shared_{custom_backend_name}',
+            classmethod(wrap_typed_storage_new_shared))
+
+    # type: ignore[attr-defined]
+    def wrap_typed_storage_release_ipc_counter(cls,
+                                               *args,
+                                               device=None,
+                                               **kwargs):
+        return torch.UntypedStorage._release_ipc_counter_device(*args, **kwargs)
+
+    _check_register_once(torch.TypedStorage,
+                         f'_release_ipc_counter_{custom_backend_name}')
+    setattr(torch.TypedStorage, f'_release_ipc_counter_{custom_backend_name}',
+            classmethod(wrap_typed_storage_release_ipc_counter))
+
 
 def generate_methods_for_privateuse1_backend(for_tensor: bool = True, for_module: bool = True,
                                              for_packed_sequence: bool = True,