[Test] Refactor hard coded device string in test files under compile/quantization/models/model_executor folders (#38901)

Signed-off-by: Liao, Wei <wei.liao@intel.com>

tests/basic_correctness/test_cumem.py

@@ -13,6 +13,8 @@ from vllm.utils.mem_constants import GiB_bytes
 
 from ..utils import create_new_process_for_each_test, requires_fp8
 
+DEVICE_TYPE = current_platform.device_type
+
 
 @create_new_process_for_each_test("fork" if not current_platform.is_rocm() else "spawn")
 def test_python_error():
@@ -26,13 +28,13 @@ def test_python_error():
     tensors = []
     with allocator.use_memory_pool():
         # allocate 70% of the total memory
-        x = torch.empty(alloc_bytes, dtype=torch.uint8, device="cuda")
+        x = torch.empty(alloc_bytes, dtype=torch.uint8, device=DEVICE_TYPE)
         tensors.append(x)
     # release the memory
     allocator.sleep()
 
     # allocate more memory than the total memory
-    y = torch.empty(alloc_bytes, dtype=torch.uint8, device="cuda")
+    y = torch.empty(alloc_bytes, dtype=torch.uint8, device=DEVICE_TYPE)
     tensors.append(y)
     with pytest.raises(RuntimeError):
         # when the allocator is woken up, it should raise an error
@@ -44,17 +46,17 @@ def test_python_error():
 def test_basic_cumem():
     # some tensors from default memory pool
     shape = (1024, 1024)
-    x = torch.empty(shape, device="cuda")
+    x = torch.empty(shape, device=DEVICE_TYPE)
     x.zero_()
 
     # some tensors from custom memory pool
     allocator = CuMemAllocator.get_instance()
     with allocator.use_memory_pool():
         # custom memory pool
-        y = torch.empty(shape, device="cuda")
+        y = torch.empty(shape, device=DEVICE_TYPE)
         y.zero_()
         y += 1
-        z = torch.empty(shape, device="cuda")
+        z = torch.empty(shape, device=DEVICE_TYPE)
         z.zero_()
         z += 2
 
@@ -77,16 +79,16 @@ def test_basic_cumem():
 def test_cumem_with_cudagraph():
     allocator = CuMemAllocator.get_instance()
     with allocator.use_memory_pool():
-        weight = torch.eye(1024, device="cuda")
+        weight = torch.eye(1024, device=DEVICE_TYPE)
     with allocator.use_memory_pool(tag="discard"):
-        cache = torch.empty(1024, 1024, device="cuda")
+        cache = torch.empty(1024, 1024, device=DEVICE_TYPE)
 
     def model(x):
         out = x @ weight
         cache[: out.size(0)].copy_(out)
         return out + 1
 
-    x = torch.empty(128, 1024, device="cuda")
+    x = torch.empty(128, 1024, device=DEVICE_TYPE)
 
     # warmup
     model(x)

tests/compile/passes/distributed/test_async_tp.py

@@ -31,6 +31,7 @@ from vllm.platforms import current_platform
 from vllm.utils.system_utils import update_environment_variables
 from vllm.utils.torch_utils import set_random_seed
 
+DEVICE_TYPE = current_platform.device_type
 FP8_DTYPE = current_platform.fp8_dtype()
 
 prompts = [
@@ -299,7 +300,7 @@ def async_tp_pass_on_test_model(
 ):
     set_random_seed(0)
 
-    device = torch.device(f"cuda:{local_rank}")
+    device = torch.device(f"{DEVICE_TYPE}:{local_rank}")
     torch.accelerator.set_device_index(device)
     torch.set_default_device(device)
     torch.set_default_dtype(dtype)
@@ -324,7 +325,7 @@ def async_tp_pass_on_test_model(
             fuse_gemm_comms=True,
         ),
     )
-    vllm_config.device_config = DeviceConfig(device=torch.device("cuda"))
+    vllm_config.device_config = DeviceConfig(device=torch.device(DEVICE_TYPE))
 
     # this is a fake model name to construct the model config
     # in the vllm_config, it's not really used.

tests/compile/passes/distributed/test_fusion_all_reduce.py

@@ -37,6 +37,8 @@ from vllm.platforms import current_platform
 from vllm.utils.system_utils import update_environment_variables
 from vllm.utils.torch_utils import set_random_seed
 
+DEVICE_TYPE = current_platform.device_type
+
 
 class TestAllReduceRMSNormModel(torch.nn.Module):
     def __init__(
@@ -268,7 +270,7 @@ def all_reduce_fusion_pass_on_test_model(
 ):
     set_random_seed(0)
 
-    device = torch.device(f"cuda:{local_rank}")
+    device = torch.device(f"{DEVICE_TYPE}:{local_rank}")
     torch.accelerator.set_device_index(device)
     torch.set_default_device(device)
     torch.set_default_dtype(dtype)
@@ -300,7 +302,7 @@ def all_reduce_fusion_pass_on_test_model(
     vllm_config.compilation_config.pass_config = PassConfig(
         fuse_allreduce_rms=True, eliminate_noops=True
     )
-    vllm_config.device_config = DeviceConfig(device=torch.device("cuda"))
+    vllm_config.device_config = DeviceConfig(device=torch.device(DEVICE_TYPE))
     vllm_config.parallel_config.rank = local_rank  # Setup rank for debug path
 
     # this is a fake model name to construct the model config

tests/compile/passes/distributed/test_sequence_parallelism.py

@@ -35,6 +35,8 @@ from vllm.platforms import current_platform
 from vllm.utils.system_utils import update_environment_variables
 from vllm.utils.torch_utils import set_random_seed
 
+DEVICE_TYPE = current_platform.device_type
+
 pytestmark = pytest.mark.skipif(not current_platform.is_cuda(), reason="Only test CUDA")
 
 FP8_DTYPE = current_platform.fp8_dtype()
@@ -228,7 +230,7 @@ def sequence_parallelism_pass_on_test_model(
 ):
     set_random_seed(0)
 
-    device = torch.device(f"cuda:{local_rank}")
+    device = torch.device(f"{DEVICE_TYPE}:{local_rank}")
     torch.accelerator.set_device_index(device)
     torch.set_default_device(device)
     torch.set_default_dtype(dtype)
@@ -258,7 +260,7 @@ def sequence_parallelism_pass_on_test_model(
             eliminate_noops=True,
         ),
     )  # NoOp needed for fusion
-    device_config = DeviceConfig(device=torch.device("cuda"))
+    device_config = DeviceConfig(device=torch.device(DEVICE_TYPE))
 
     # this is a fake model name to construct the model config
     # in the vllm_config, it's not really used.

tests/compile/passes/test_fusion_attn.py

@@ -41,6 +41,7 @@ from vllm.v1.attention.backend import AttentionMetadata
 from vllm.v1.attention.backends.registry import AttentionBackendEnum
 from vllm.v1.kv_cache_interface import AttentionSpec, get_kv_quant_mode
 
+DEVICE_TYPE = current_platform.device_type
 FP8_DTYPE = current_platform.fp8_dtype()
 FP4_DTYPE = torch.uint8
 
@@ -300,7 +301,7 @@ def test_attention_quant_pattern(
 
     custom_ops_list = custom_ops.split(",") if custom_ops else []
 
-    device = torch.device("cuda:0")
+    device = torch.device(f"{DEVICE_TYPE}:0")
     torch.set_default_dtype(dtype)
     torch.manual_seed(42)
 

tests/compile/passes/test_mla_attn_quant_fusion.py

@@ -45,6 +45,7 @@ from vllm.v1.kv_cache_interface import MLAAttentionSpec
 
 FP8_DTYPE = current_platform.fp8_dtype()
 FP4_DTYPE = torch.uint8
+DEVICE_TYPE = current_platform.device_type
 
 
 class MLAAttentionQuantPatternModel(torch.nn.Module):
@@ -356,7 +357,7 @@ def test_mla_attention_quant_pattern(
 
     custom_ops_list = custom_ops.split(",") if custom_ops else []
 
-    device = torch.device("cuda:0")
+    device = torch.device(f"{DEVICE_TYPE}:0")
     torch.set_default_dtype(dtype)
     torch.manual_seed(42)
 

tests/compile/passes/test_noop_elimination.py

@@ -8,6 +8,9 @@ import vllm
 from tests.compile.backend import TestBackend
 from vllm.compilation.passes.utility.noop_elimination import NoOpEliminationPass
 from vllm.config import CompilationConfig, CompilationMode, PassConfig, VllmConfig
+from vllm.platforms import current_platform
+
+DEVICE_TYPE = current_platform.device_type
 
 
 @pytest.mark.parametrize("dtype", [torch.float16, torch.bfloat16, torch.float32])
@@ -17,7 +20,7 @@ from vllm.config import CompilationConfig, CompilationMode, PassConfig, VllmConf
 )
 @pytest.mark.parametrize("hidden_size", [64, 4096])
 def test_noop_elimination(dtype, num_tokens, hidden_size, buffer_size):
-    torch.set_default_device("cuda")
+    torch.set_default_device(DEVICE_TYPE)
     torch.set_default_dtype(dtype)
     torch.manual_seed(1)
 
@@ -88,7 +91,7 @@ def test_non_noop_slice_preserved():
     Regression test for a bug where end=-1 was treated like an inferred
     dimension (reshape semantics) leading to incorrect elimination.
     """
-    torch.set_default_device("cuda")
+    torch.set_default_device(DEVICE_TYPE)
     x = torch.randn(16, 16)
 
     class SliceModel(torch.nn.Module):

tests/compile/passes/test_scatter_split_replace.py

@@ -13,6 +13,9 @@ from vllm.compilation.passes.utility.scatter_split_replace import (
 from vllm.compilation.passes.utility.split_coalescing import SplitCoalescingPass
 from vllm.config import CompilationConfig, CompilationMode, VllmConfig
 from vllm.model_executor.layers.rotary_embedding import RotaryEmbedding
+from vllm.platforms import current_platform
+
+DEVICE_TYPE = current_platform.device_type
 
 
 class ScatterSplitReplacementModel(nn.Module):
@@ -61,7 +64,7 @@ class ScatterSplitReplacementModel(nn.Module):
 
 @pytest.mark.parametrize("dtype", [torch.float16, torch.bfloat16])
 def test_scatter_split_replace(dtype):
-    torch.set_default_device("cuda")
+    torch.set_default_device(DEVICE_TYPE)
     torch.set_default_dtype(dtype)
     torch.manual_seed(0)
 

tests/compile/passes/test_split_coalescing.py

@@ -8,6 +8,9 @@ import vllm
 from tests.compile.backend import TestBackend
 from vllm.compilation.passes.utility.split_coalescing import SplitCoalescingPass
 from vllm.config import CompilationConfig, CompilationMode, PassConfig, VllmConfig
+from vllm.platforms import current_platform
+
+DEVICE_TYPE = current_platform.device_type
 
 
 class SplitCoalescingModel(torch.nn.Module):
@@ -28,7 +31,7 @@ class SplitCoalescingModel(torch.nn.Module):
 
 @pytest.mark.parametrize("dtype", [torch.float16, torch.bfloat16])
 def test_split_coalescing(dtype):
-    torch.set_default_device("cuda")
+    torch.set_default_device(DEVICE_TYPE)
     torch.set_default_dtype(dtype)
     torch.manual_seed(0)
 

tests/compile/test_config.py

@@ -31,6 +31,8 @@ from vllm.v1.cudagraph_dispatcher import CudagraphDispatcher
 # This import automatically registers `torch.ops.silly.attention`
 from . import silly_attention  # noqa: F401
 
+DEVICE_TYPE = current_platform.device_type
+
 
 def test_version():
     # Test the version comparison logic using the private function
@@ -456,7 +458,7 @@ def test_cached_compilation_config(default_vllm_config):
     from vllm.model_executor.layers.quantization.utils.quant_utils import GroupShape
 
     dtype = torch.bfloat16
-    device = torch.device("cuda:0")
+    device = torch.device(f"{DEVICE_TYPE}:0")
     batch_size, num_qo_heads, head_size = 8, 16, 128
 
     # access and cache default compilation config
@@ -478,7 +480,7 @@ def test_cached_compilation_config(default_vllm_config):
         query_quant = QuantFP8(static=True, group_shape=GroupShape.PER_TENSOR)
         query_quant = torch.compile(query_quant)
 
-        _q_scale = torch.tensor(1.0, dtype=torch.float32, device="cuda")
+        _q_scale = torch.tensor(1.0, dtype=torch.float32, device=DEVICE_TYPE)
         query = torch.randn(
             batch_size, num_qo_heads * head_size, dtype=dtype, device=device
         )

tests/compile/test_graph_partition.py

@@ -15,10 +15,13 @@ from vllm.compilation.backends import (
     split_graph,
 )
 from vllm.compilation.passes.fx_utils import find_op_nodes
+from vllm.platforms import current_platform
 
 # This import automatically registers `torch.ops.silly.attention`
 from . import silly_attention  # noqa: F401
 
+DEVICE_TYPE = current_platform.device_type
+
 
 def test_getitem_moved_to_producer_subgraph():
     """
@@ -151,7 +154,7 @@ def test_consecutive_ops_in_split():
         final_result = torch.sigmoid(attn_inout)
         return final_result
 
-    torch.set_default_device("cuda")
+    torch.set_default_device(DEVICE_TYPE)
 
     # Create the traced FX graph for the model
     x = torch.randn(8, 4)
@@ -329,7 +332,7 @@ def test_builtin_empty_only_partition_is_merged():
         "Expected two builtin empty_like nodes in merged non-splitting subgraph"
     )
 
-    x = torch.randn(2, 3, device="cuda")
+    x = torch.randn(2, 3, device=DEVICE_TYPE)
     output_original = gm(x)
     output_split = split_gm(x)
     assert torch.allclose(output_original, output_split), "Output mismatch after split"

tests/compile/test_rotary_embedding_compile.py

@@ -16,6 +16,8 @@ from vllm.config.compilation import CompilationMode, CUDAGraphMode
 from vllm.model_executor.layers.rotary_embedding import get_rope
 from vllm.platforms import current_platform
 
+DEVICE_TYPE = current_platform.device_type
+
 
 @support_torch_compile
 class RotaryEmbeddingCompileModule(torch.nn.Module):
@@ -45,7 +47,7 @@ def test_rotary_embedding_torch_compile_with_custom_op(monkeypatch):
     monkeypatch.setenv("VLLM_USE_BYTECODE_HOOK", "1")
     monkeypatch.setenv("VLLM_USE_AOT_COMPILE", "0")
 
-    device = "cuda"
+    device = DEVICE_TYPE
     positions = torch.arange(16, device=device)
     query = torch.randn(16, 32, device=device, dtype=torch.bfloat16)
     key = torch.randn(16, 32, device=device, dtype=torch.bfloat16)

tests/compile/test_structured_logging.py

@@ -17,8 +17,10 @@ from vllm.config.compilation import (
 )
 from vllm.config.scheduler import SchedulerConfig
 from vllm.forward_context import set_forward_context
+from vllm.platforms import current_platform
 
 MLP_SIZE = 64
+DEVICE_TYPE = current_platform.device_type
 
 
 @support_torch_compile
@@ -71,7 +73,7 @@ class TraceStructuredCapture:
 @pytest.mark.skipif(not torch.cuda.is_available(), reason="CUDA required")
 def test_vllm_structured_logging_artifacts(use_fresh_inductor_cache):
     """Test that all expected vLLM artifacts are logged during compilation."""
-    torch.set_default_device("cuda")
+    torch.set_default_device(DEVICE_TYPE)
 
     capture = TraceStructuredCapture()
 

tests/model_executor/test_eagle_quantization.py

@@ -10,9 +10,10 @@ from vllm.config import LoadConfig, ModelConfig, SpeculativeConfig, VllmConfig
 from vllm.model_executor.models.utils import get_draft_quant_config
 from vllm.platforms import current_platform
 
+DEVICE_TYPE = current_platform.device_type
 DEVICES = (
-    [f"cuda:{i}" for i in range(1 if torch.accelerator.device_count() == 1 else 2)]
-    if current_platform.is_cuda_alike()
+    [f"{DEVICE_TYPE}:{i}" for i in range(min(torch.accelerator.device_count(), 2))]
+    if not current_platform.is_cpu()
     else ["cpu"]
 )
 

tests/models/multimodal/pooling/test_intern_vit.py

@@ -7,6 +7,7 @@ from huggingface_hub import snapshot_download
 from transformers import AutoConfig, AutoModel, CLIPImageProcessor
 
 from vllm.distributed import cleanup_dist_env_and_memory
+from vllm.platforms import current_platform
 from vllm.utils.torch_utils import STR_DTYPE_TO_TORCH_DTYPE
 
 from ....conftest import ImageTestAssets
@@ -15,6 +16,8 @@ from ....conftest import ImageTestAssets
 # dynamic_module and trust_remote_code for hf_runner
 DOWNLOAD_PATTERN = ["*.json", "*.py", "*.safetensors", "*.txt", "*.model"]
 
+DEVICE_TYPE = current_platform.device_type
+
 
 @torch.inference_mode()
 def run_intern_vit_test(
@@ -39,9 +42,9 @@ def run_intern_vit_test(
 
     hf_model = AutoModel.from_pretrained(
         model, dtype=torch_dtype, trust_remote_code=True
-    ).to("cuda")
+    ).to(DEVICE_TYPE)
     hf_outputs_per_image = [
-        hf_model(pixel_value.to("cuda")).last_hidden_state
+        hf_model(pixel_value.to(DEVICE_TYPE)).last_hidden_state
         for pixel_value in pixel_values
     ]
 
@@ -53,9 +56,10 @@ def run_intern_vit_test(
     del hf_model
     cleanup_dist_env_and_memory()
 
-    vllm_model = vllm_model.to("cuda", torch_dtype)
+    vllm_model = vllm_model.to(DEVICE_TYPE, torch_dtype)
     vllm_outputs_per_image = [
-        vllm_model(pixel_values=pixel_value.to("cuda")) for pixel_value in pixel_values
+        vllm_model(pixel_values=pixel_value.to(DEVICE_TYPE))
+        for pixel_value in pixel_values
     ]
     del vllm_model
     cleanup_dist_env_and_memory()

tests/models/multimodal/pooling/test_radio.py

@@ -8,6 +8,7 @@ from transformers import AutoConfig, AutoModel, CLIPImageProcessor
 
 from vllm.distributed import cleanup_dist_env_and_memory
 from vllm.model_executor.models.radio import RadioModel
+from vllm.platforms import current_platform
 from vllm.transformers_utils.configs.radio import RadioConfig
 from vllm.utils.torch_utils import STR_DTYPE_TO_TORCH_DTYPE
 
@@ -17,6 +18,8 @@ from ....conftest import ImageTestAssets
 # dynamic_module and trust_remote_code for hf_runner
 DOWNLOAD_PATTERN = ["*.json", "*.py", "*.safetensors", "*.txt", "*.model"]
 
+DEVICE_TYPE = current_platform.device_type
+
 
 @torch.inference_mode()
 def run_radio_test(
@@ -51,7 +54,7 @@ def run_radio_test(
         config=hf_config,
         dtype=torch_dtype,
         trust_remote_code=True,
-    ).to("cuda")
+    ).to(DEVICE_TYPE)
     hf_model.eval()
 
     # A HF model has image normalization as a part of model's forward
@@ -62,7 +65,7 @@ def run_radio_test(
     hf_model.make_preprocessor_external()
 
     hf_outputs_per_image = [
-        hf_model(pixel_value.to("cuda")) for pixel_value in pixel_values
+        hf_model(pixel_value.to(DEVICE_TYPE)) for pixel_value in pixel_values
     ]
 
     vllm_config = RadioConfig(
@@ -71,10 +74,11 @@ def run_radio_test(
     )
     vllm_model = RadioModel(vllm_config)
     vllm_model.load_weights(hf_model.state_dict())
-    vllm_model = vllm_model.to("cuda", torch_dtype)
+    vllm_model = vllm_model.to(DEVICE_TYPE, torch_dtype)
 
     vllm_outputs_per_image = [
-        vllm_model(pixel_values=pixel_value.to("cuda")) for pixel_value in pixel_values
+        vllm_model(pixel_values=pixel_value.to(DEVICE_TYPE))
+        for pixel_value in pixel_values
     ]
     del vllm_model, hf_model
     cleanup_dist_env_and_memory()

tests/models/test_utils.py

@@ -10,6 +10,8 @@ from vllm.model_executor.models.utils import (
 )
 from vllm.platforms import current_platform
 
+DEVICE_TYPE = current_platform.device_type
+
 
 class ModuleWithBatchNorm(torch.nn.Module):
     def __init__(self):
@@ -174,8 +176,12 @@ class raise_if_cuda_sync:
 
 @pytest.mark.skipif(not current_platform.is_cuda(), reason="Skip if not cuda")
 def test_merge_multimodal_embeddings_no_sync():
-    inputs_embeds = torch.zeros([5, 10], dtype=torch.bfloat16, device="cuda:0")
-    multimodal_embeddings = [torch.ones([3, 10], dtype=torch.bfloat16, device="cuda:0")]
+    inputs_embeds = torch.zeros(
+        [5, 10], dtype=torch.bfloat16, device=f"{DEVICE_TYPE}:0"
+    )
+    multimodal_embeddings = [
+        torch.ones([3, 10], dtype=torch.bfloat16, device=f"{DEVICE_TYPE}:0")
+    ]
     is_multimodal = torch.tensor([True, False, True, True, False], device="cpu")
     with raise_if_cuda_sync():
         _merge_multimodal_embeddings(

tests/quantization/test_fp8.py

@@ -24,6 +24,8 @@ from vllm.model_executor.layers.quantization.fp8 import (
 from vllm.model_executor.model_loader.weight_utils import default_weight_loader
 from vllm.platforms import current_platform
 
+DEVICE_TYPE = current_platform.device_type
+
 MODELS = [
     "neuralmagic/Meta-Llama-3-8B-Instruct-FP8-KV",
     # The checkpoint below was removed from the HF.
@@ -314,7 +316,7 @@ def test_scaled_fp8_quant(dtype) -> None:
 
     # Note that we use a shape % 4 != 0 to cover edge cases,
     # because scaled_fp8_quant is vectorized by 4.
-    x = (torch.randn(size=(11, 11), device="cuda") * 13).to(dtype)
+    x = (torch.randn(size=(11, 11), device=DEVICE_TYPE) * 13).to(dtype)
 
     # Dynamic quantization
     ref_y, inv_scale = ops.scaled_fp8_quant(x, None)
@@ -338,7 +340,9 @@ def test_scaled_fp8_quant(dtype) -> None:
 
     # non-contiguous input with padding
     m, n, padded_stride = 975, 512, 576
-    padded_tensor = (torch.randn(size=(m, padded_stride), device="cuda") * 13).to(dtype)
+    padded_tensor = (torch.randn(size=(m, padded_stride), device=DEVICE_TYPE) * 13).to(
+        dtype
+    )
     x_nc = padded_tensor[:, :n]  # shape (m, n) with stride (padded_stride, 1)
 
     assert not x_nc.is_contiguous()
@@ -409,7 +413,7 @@ def test_fp8_reloading(
 
     # Set model config as model_config.dtype is required in Fp8LinearMethod.
     default_vllm_config.model_config = ModelConfig()
-    with torch.device("cuda:0"):
+    with torch.device(f"{DEVICE_TYPE}:0"):
         config = Fp8Config(
             is_checkpoint_fp8_serialized=is_checkpoint_fp8_serialized,
             weight_block_size=weight_block_size,

tests/quantization/test_per_token_kv_cache.py

@@ -25,11 +25,13 @@ from vllm.platforms import current_platform
 from vllm.utils.torch_utils import set_random_seed
 from vllm.v1.kv_cache_interface import KVQuantMode, is_quantized_kv_cache
 
+DEVICE_TYPE = current_platform.device_type
+
 # Skip entire module if no CUDA/ROCm GPU available
 pytestmark = [
     pytest.mark.skipif(
-        not current_platform.is_cuda_alike(),
-        reason="Per-token-head KV cache tests require CUDA or ROCm GPU.",
+        current_platform.is_cpu(),
+        reason="Per-token-head KV cache tests require GPU.",
     ),
 ]
 
@@ -166,7 +168,7 @@ def test_reshape_and_cache_per_token_head(
     )
 
     set_random_seed(seed)
-    torch.set_default_device("cuda")
+    torch.set_default_device(DEVICE_TYPE)
 
     num_blocks = (num_tokens + block_size - 1) // block_size + 4
 
@@ -260,7 +262,7 @@ def test_per_token_head_round_trip_accuracy(
         triton_reshape_and_cache_flash_per_token_head_quant,
     )
 
-    torch.set_default_device("cuda")
+    torch.set_default_device(DEVICE_TYPE)
     set_random_seed(42)
 
     num_blocks = (num_tokens + block_size - 1) // block_size + 2
@@ -323,7 +325,7 @@ def test_per_token_head_negative_slot_skipped(qcfg: QuantConfig):
         triton_reshape_and_cache_flash_per_token_head_quant,
     )
 
-    torch.set_default_device("cuda")
+    torch.set_default_device(DEVICE_TYPE)
     num_tokens = 4
     num_heads = 2
     head_size = 64
@@ -430,7 +432,7 @@ def test_triton_unified_attention_per_token_head_scale(
     from vllm.utils.math_utils import next_power_of_2
     from vllm.v1.attention.ops.triton_unified_attention import unified_attention
 
-    torch.set_default_device("cuda")
+    torch.set_default_device(DEVICE_TYPE)
     set_random_seed(0)
 
     num_seqs = len(seq_lens)

tests/quantization/test_quark.py

@@ -36,6 +36,8 @@ QUARK_MXFP4_AVAILABLE = find_spec("quark") is not None and version.parse(
     importlib.metadata.version("amd-quark")
 ) >= version.parse(QUARK_MXFP4_MIN_VERSION)
 
+DEVICE_TYPE = current_platform.device_type
+
 if QUARK_MXFP4_AVAILABLE:
     from quark.torch.export.nn.modules.realquantizer import StaticScaledRealQuantizer
     from quark.torch.kernel import mx as mx_kernel
@@ -309,7 +311,7 @@ def test_mxfp4_fused_qdq_match_quark(float_dtype: torch.dtype, scalings: list[in
     torch.manual_seed(0)
 
     hidden_size = 64 * 32
-    inp = (torch.rand(1, hidden_size, dtype=float_dtype, device="cuda") - 0.5) * 2
+    inp = (torch.rand(1, hidden_size, dtype=float_dtype, device=DEVICE_TYPE) - 0.5) * 2
     for i in range(hidden_size // 32):
         inp[:, i * 32 : (i + 1) * 32] = (
             inp[:, i * 32 : (i + 1) * 32] * scalings[i % len(scalings)]
@@ -353,15 +355,15 @@ def test_mxfp4_dequant_kernel_match_quark(
         reorder=False,
         real_quantized=True,
         float_dtype=float_dtype,
-        device="cuda",
+        device=DEVICE_TYPE,
     )
 
-    observer = qspec.observer_cls(qspec, device="cuda")
+    observer = qspec.observer_cls(qspec, device=DEVICE_TYPE)
 
     hidden_size = 512
     shape = (11008, hidden_size)
 
-    w = (torch.rand(shape, device="cuda", dtype=float_dtype) - 0.5) * 2
+    w = (torch.rand(shape, device=DEVICE_TYPE, dtype=float_dtype) - 0.5) * 2
 
     # Make it so that different groups have different scales.
     for i in range(hidden_size // 32):
@@ -373,7 +375,7 @@ def test_mxfp4_dequant_kernel_match_quark(
     scale, _ = observer._calculate_qparams()
     weight_quantizer.scale = scale
 
-    w_mxfp4 = weight_quantizer.to_real_quantize_params(w).to("cuda")
+    w_mxfp4 = weight_quantizer.to_real_quantize_params(w).to(DEVICE_TYPE)
     weight_quantizer.maybe_convert_and_transpose_scale()
 
     scale = weight_quantizer.scale

tests/quantization/test_torchao.py

@@ -8,6 +8,7 @@ import torch
 from vllm.model_executor.model_loader import get_model_loader
 from vllm.platforms import current_platform
 
+DEVICE_TYPE = current_platform.device_type
 DTYPE = ["bfloat16"]
 
 TORCHAO_AVAILABLE = importlib.util.find_spec("torchao") is not None
@@ -33,7 +34,7 @@ def test_pre_quantized_model(vllm_runner):
 @pytest.mark.parametrize(
     "pt_load_map_location",
     [
-        "cuda:0",
+        f"{DEVICE_TYPE}:0",
         # {"": "cuda"},
     ],
 )
@@ -60,7 +61,7 @@ def test_qwenvl_int8wo_model_loading_with_params(vllm_runner):
         model_name=model_name,
         quantization="torchao",
         dtype="bfloat16",
-        pt_load_map_location="cuda:0",
+        pt_load_map_location=f"{DEVICE_TYPE}:0",
         enforce_eager=True,
     ) as llm:
         output = llm.generate_greedy(["The capital of France is"], max_tokens=4)
@@ -81,7 +82,7 @@ def test_opt_125m_awq_int4wo_model_loading_with_params(vllm_runner):
         model_name=model_name,
         quantization="torchao",
         dtype="bfloat16",
-        pt_load_map_location="cuda:0",
+        pt_load_map_location=f"{DEVICE_TYPE}:0",
     ) as llm:
         output = llm.generate_greedy(["The capital of France is"], max_tokens=4)
 
@@ -112,7 +113,7 @@ def test_online_quant_config_dict_json(vllm_runner, enable_pickle):
     with vllm_runner(
         model_name=model_name,
         dtype="bfloat16",
-        pt_load_map_location="cuda:0",
+        pt_load_map_location=f"{DEVICE_TYPE}:0",
         quantization="torchao",
         hf_overrides=hf_overrides,
         enforce_eager=True,
@@ -158,7 +159,7 @@ def test_online_quant_config_file(vllm_runner):
         with vllm_runner(
             model_name=model_name,
             dtype="bfloat16",
-            pt_load_map_location="cuda:0",
+            pt_load_map_location=f"{DEVICE_TYPE}:0",
             quantization="torchao",
             hf_overrides=hf_overrides,
             enforce_eager=True,
@@ -248,7 +249,7 @@ def test_opt_125m_module_fqn_to_config_regex_model(vllm_runner):
     torch._dynamo.reset()
     model_name = "torchao-testing/opt-125m-ModuleFqnToConfig-v1-regex-0.14.0.dev"
     with vllm_runner(
-        model_name=model_name, dtype="bfloat16", pt_load_map_location="cuda:0"
+        model_name=model_name, dtype="bfloat16", pt_load_map_location=f"{DEVICE_TYPE}:0"
     ) as llm:
         output = llm.generate_greedy(["The capital of France is"], max_tokens=4)
 
@@ -278,7 +279,7 @@ def test_opt_125m_int4wo_model_running_preshuffled_kernel(vllm_runner, monkeypat
         model_name=model_name,
         quantization="torchao",
         dtype="bfloat16",
-        pt_load_map_location="cuda:0",
+        pt_load_map_location=f"{DEVICE_TYPE}:0",
         enforce_eager=True,
     ) as llm:
 
@@ -357,7 +358,7 @@ def test_opt_125m_int4wo_model_running_preshuffled_kernel_online_quant(
         model_name=model_name,
         quantization="torchao",
         dtype="bfloat16",
-        pt_load_map_location="cuda:0",
+        pt_load_map_location=f"{DEVICE_TYPE}:0",
         hf_overrides=hf_overrides,
         enforce_eager=True,
     ) as llm:

tests/test_config.py

@@ -34,6 +34,8 @@ from vllm.config.vllm import (
 )
 from vllm.platforms import current_platform
 
+DEVICE_TYPE = current_platform.device_type
+
 
 def test_compile_config_repr_succeeds():
     # setup: VllmBackend mutates the config object
@@ -504,8 +506,8 @@ def test_generation_config_loading():
 @pytest.mark.parametrize(
     "pt_load_map_location",
     [
-        "cuda",
-        {"": "cuda"},
+        DEVICE_TYPE,
+        {"": DEVICE_TYPE},
     ],
 )
 def test_load_config_pt_load_map_location(pt_load_map_location):

tests/v1/sample/test_topk_topp_sampler.py

@@ -127,7 +127,7 @@ def test_flashinfer_sampler():
 # =============================================================================
 
 
-@pytest.mark.skipif("CPU" in DEVICE_TYPE, reason="CUDA/XPU not available")
+@pytest.mark.skipif("cpu" in DEVICE_TYPE, reason="CUDA/XPU not available")
 class TestTritonTopkTopp:
     """Tests for the Triton top-k/top-p kernel."""
 

tests/v1/test_tensor_ipc_queue.py

@@ -14,6 +14,7 @@ import pytest
 import torch
 import torch.multiprocessing as torch_mp
 
+from vllm.platforms import current_platform
 from vllm.v1.engine.tensor_ipc import (
     TensorIpcData,
     TensorIpcReceiver,
@@ -21,6 +22,8 @@ from vllm.v1.engine.tensor_ipc import (
 )
 from vllm.v1.serial_utils import MsgpackDecoder, MsgpackEncoder
 
+DEVICE_TYPE = current_platform.device_type
+
 
 @pytest.fixture(scope="module", autouse=True)
 def setup_multiprocessing():
@@ -53,7 +56,7 @@ def encoder_process(
         encoder = MsgpackEncoder(oob_tensor_consumer=sender)
 
         if torch.cuda.is_available():
-            device = "cuda:0"
+            device = f"{DEVICE_TYPE}:0"
             tensor = torch.randn(
                 *tensor_data["shape"], dtype=tensor_data["dtype"], device=device
             )
@@ -384,7 +387,7 @@ def mixed_tensor_encoder_process(
 
         # Create only CUDA tensor for IPC (CPU will be serialized)
         # But actually, let's just send CUDA tensor directly
-        cuda_tensor = torch.randn(4, 5, device="cuda:0")
+        cuda_tensor = torch.randn(4, 5, device=f"{DEVICE_TYPE}:0")
 
         # Manually send via IPC to test the mechanism
         cuda_tensor_shared = cuda_tensor.share_memory_()
@@ -651,7 +654,7 @@ def test_ipc_disabled_mode():
 
     # If CUDA is available, test with CUDA tensor too
     if torch.cuda.is_available():
-        cuda_tensor = torch.randn(4, 5, device="cuda:0")
+        cuda_tensor = torch.randn(4, 5, device=f"{DEVICE_TYPE}:0")
         encoded_cuda = encoder.encode({"cuda_tensor": cuda_tensor})
         assert len(encoded_cuda) > 0
         assert tensor_queues[0].empty(), (