feat/rfc/poc: Agnostic GPU

src/transformers/models/olmo_hybrid/modeling_olmo_hybrid.py

@@ -38,7 +38,7 @@
 from ...modeling_rope_utils import ROPE_INIT_FUNCTIONS, dynamic_rope_update
 from ...modeling_utils import ALL_ATTENTION_FUNCTIONS, PreTrainedModel
 from ...processing_utils import Unpack
-from ...utils import TransformersKwargs, auto_docstring, can_return_tuple, logging
+from ...utils import TransformersKwargs, agnostic, auto_docstring, can_return_tuple, logging
 from ...utils.generic import maybe_autocast, merge_with_config_defaults
 from ...utils.import_utils import is_flash_linear_attention_available
 from ...utils.output_capturing import capture_outputs
@@ -695,7 +695,7 @@ def __init__(self, config: OlmoHybridConfig, layer_idx: int):
             else FusedRMSNormGated(
                 self.head_v_dim,
                 eps=1e-5,
-                device=torch.cuda.current_device(),
+                device=agnostic.gpu.current_device(),
                 dtype=config.dtype if config.dtype is not None else torch.get_default_dtype(),
             )
         )

src/transformers/models/olmo_hybrid/modular_olmo_hybrid.py

@@ -32,7 +32,7 @@
 from ...modeling_rope_utils import dynamic_rope_update
 from ...modeling_utils import ALL_ATTENTION_FUNCTIONS, PreTrainedModel
 from ...processing_utils import Unpack
-from ...utils import TransformersKwargs, auto_docstring, logging
+from ...utils import TransformersKwargs, agnostic, auto_docstring, logging
 from ...utils.generic import maybe_autocast, merge_with_config_defaults
 from ...utils.import_utils import is_flash_linear_attention_available
 from ...utils.output_capturing import capture_outputs
@@ -513,7 +513,7 @@ def __init__(self, config: OlmoHybridConfig, layer_idx: int):
             else FusedRMSNormGated(
                 self.head_v_dim,
                 eps=1e-5,
-                device=torch.cuda.current_device(),
+                device=agnostic.gpu.current_device(),
                 dtype=config.dtype if config.dtype is not None else torch.get_default_dtype(),
             )
         )

src/transformers/models/qwen3_5/modeling_qwen3_5.py

@@ -44,7 +44,7 @@
 from ...modeling_rope_utils import ROPE_INIT_FUNCTIONS, dynamic_rope_update
 from ...modeling_utils import ALL_ATTENTION_FUNCTIONS, PreTrainedModel
 from ...processing_utils import Unpack
-from ...utils import TransformersKwargs, auto_docstring, can_return_tuple, logging, torch_compilable_check
+from ...utils import TransformersKwargs, agnostic, auto_docstring, can_return_tuple, logging, torch_compilable_check
 from ...utils.generic import is_flash_attention_requested, maybe_autocast, merge_with_config_defaults
 from ...utils.import_utils import is_causal_conv1d_available, is_flash_linear_attention_available
 from ...utils.output_capturing import capture_outputs
@@ -395,7 +395,7 @@ def __init__(self, config: Qwen3_5Config, layer_idx: int):
                 self.head_v_dim,
                 eps=self.layer_norm_epsilon,
                 activation=self.activation,
-                device=torch.cuda.current_device(),
+                device=agnostic.gpu.current_device(),
                 dtype=config.dtype if config.dtype is not None else torch.get_default_dtype(),
             )
         )

src/transformers/models/qwen3_5_moe/modeling_qwen3_5_moe.py

@@ -45,7 +45,7 @@
 from ...modeling_rope_utils import ROPE_INIT_FUNCTIONS, dynamic_rope_update
 from ...modeling_utils import ALL_ATTENTION_FUNCTIONS, PreTrainedModel
 from ...processing_utils import Unpack
-from ...utils import TransformersKwargs, auto_docstring, can_return_tuple, logging, torch_compilable_check
+from ...utils import TransformersKwargs, agnostic, auto_docstring, can_return_tuple, logging, torch_compilable_check
 from ...utils.generic import is_flash_attention_requested, maybe_autocast, merge_with_config_defaults
 from ...utils.import_utils import is_causal_conv1d_available, is_flash_linear_attention_available
 from ...utils.output_capturing import OutputRecorder, capture_outputs
@@ -396,7 +396,7 @@ def __init__(self, config: Qwen3_5MoeConfig, layer_idx: int):
                 self.head_v_dim,
                 eps=self.layer_norm_epsilon,
                 activation=self.activation,
-                device=torch.cuda.current_device(),
+                device=agnostic.gpu.current_device(),
                 dtype=config.dtype if config.dtype is not None else torch.get_default_dtype(),
             )
         )

src/transformers/models/qwen3_next/modeling_qwen3_next.py

@@ -42,7 +42,7 @@
 from ...modeling_rope_utils import ROPE_INIT_FUNCTIONS, dynamic_rope_update
 from ...modeling_utils import ALL_ATTENTION_FUNCTIONS, PreTrainedModel
 from ...processing_utils import Unpack
-from ...utils import TransformersKwargs, auto_docstring, can_return_tuple, logging
+from ...utils import TransformersKwargs, agnostic, auto_docstring, can_return_tuple, logging
 from ...utils.generic import maybe_autocast, merge_with_config_defaults
 from ...utils.import_utils import is_causal_conv1d_available, is_flash_linear_attention_available
 from ...utils.output_capturing import OutputRecorder, capture_outputs
@@ -541,7 +541,7 @@ def __init__(self, config: Qwen3NextConfig, layer_idx: int):
                 self.head_v_dim,
                 eps=self.layer_norm_epsilon,
                 activation=self.activation,
-                device=torch.cuda.current_device(),
+                device=agnostic.gpu.current_device(),
                 dtype=config.dtype if config.dtype is not None else torch.get_default_dtype(),
             )
         )

src/transformers/models/qwen3_next/modular_qwen3_next.py

@@ -28,7 +28,7 @@
 from ...modeling_outputs import MoeCausalLMOutputWithPast, MoeModelOutputWithPast
 from ...modeling_utils import ALL_ATTENTION_FUNCTIONS, PreTrainedModel
 from ...processing_utils import Unpack
-from ...utils import TransformersKwargs, auto_docstring, logging
+from ...utils import TransformersKwargs, agnostic, auto_docstring, logging
 from ...utils.generic import merge_with_config_defaults
 from ...utils.import_utils import (
     is_causal_conv1d_available,
@@ -380,7 +380,7 @@ def __init__(self, config: Qwen3NextConfig, layer_idx: int):
                 self.head_v_dim,
                 eps=self.layer_norm_epsilon,
                 activation=self.activation,
-                device=torch.cuda.current_device(),
+                device=agnostic.gpu.current_device(),
                 dtype=config.dtype if config.dtype is not None else torch.get_default_dtype(),
             )
         )

src/transformers/utils/agnostic.py

@@ -0,0 +1,83 @@
+# Copyright 2026 The HuggingFace Team. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""
+GPU calls that are device-agnostic.
+"""
+
+try:
+    import torch
+except Exception:
+    torch = None
+
+
+class AgnosticGPU:
+    @staticmethod
+    def configure() -> "AgnosticGPU":
+        return (
+            NoGPU()
+            if torch is None
+            else CUDAGPU()
+            if torch.cuda.is_available()
+            else XPUGPU()
+            if (hasattr(torch, "xpu") and torch.xpu.is_available())
+            else MPSGPU()
+            if (hasattr(torch.backends, "mps") and torch.backends.mps.is_available())
+            else NoGPU()
+        )
+
+    name: str
+
+    def is_accelerator_available(self) -> bool:
+        return False
+
+    def current_device(self) -> int:
+        return 0
+
+    def device_count(self) -> int:
+        return 0
+
+
+class CUDAGPU(AgnosticGPU):
+    def __init__(self):
+        assert torch is not None
+        self.name = "cuda"
+        self.is_accelerator_available = torch.cuda.is_available
+        self.current_device = torch.cuda.current_device
+        self.device_count = torch.cuda.device_count
+
+
+class XPUGPU(AgnosticGPU):
+    def __init__(self):
+        assert torch is not None
+        self.name = "xpu"
+        self.is_accelerator_available = torch.xpu.is_available
+        self.current_device = torch.xpu.current_device
+        self.device_count = torch.xpu.device_count
+
+
+class MPSGPU(AgnosticGPU):
+    def __init__(self):
+        assert torch is not None
+        self.name = "mps"
+        self.is_accelerator_available = torch.mps.is_available
+        # self.current_device = torch.mps.current_device
+        self.device_count = torch.mps.device_count
+
+
+class NoGPU(AgnosticGPU):
+    def __init__(self) -> None:
+        self.name = "cpu"
+
+
+gpu = AgnosticGPU.configure()

src/transformers/utils/import_utils.py

@@ -794,8 +794,14 @@ def is_mamba_2_ssm_available() -> bool:
 
 @lru_cache
 def is_flash_linear_attention_available():
+    from . import agnostic
+
     is_available, fla_version = _is_package_available("fla", return_version=True)
-    return is_torch_cuda_available() and is_available and version.parse(fla_version) >= version.parse("0.2.2")
+    return (
+        agnostic.gpu.is_accelerator_available()
+        and is_available
+        and version.parse(fla_version) >= version.parse("0.2.2")
+    )
 
 
 @lru_cache