[platform] Add verify_quantization in platform.

vllm/config.py

@@ -393,17 +393,11 @@ def _parse_quant_hf_config(self):
 
     def _verify_quantization(self) -> None:
         supported_quantization = QUANTIZATION_METHODS
-        rocm_supported_quantization = [
-            "awq", "gptq", "fp8", "compressed_tensors", "compressed-tensors",
-            "fbgemm_fp8", "gguf"
-        ]
         optimized_quantization_methods = [
             "fp8", "marlin", "modelopt", "gptq_marlin_24", "gptq_marlin",
             "awq_marlin", "fbgemm_fp8", "compressed_tensors",
             "compressed-tensors", "experts_int8"
         ]
-        tpu_supported_quantization = ["tpu_int8"]
-        neuron_supported_quantization = ["neuron_quant"]
         if self.quantization is not None:
             self.quantization = self.quantization.lower()
 
@@ -438,32 +432,12 @@ def _verify_quantization(self) -> None:
                 raise ValueError(
                     f"Unknown quantization method: {self.quantization}. Must "
                     f"be one of {supported_quantization}.")
-            if current_platform.is_rocm(
-            ) and self.quantization not in rocm_supported_quantization:
-                raise ValueError(
-                    f"{self.quantization} quantization is currently not "
-                    f"supported in ROCm.")
-            if current_platform.is_tpu(
-            ) and self.quantization not in tpu_supported_quantization:
-                raise ValueError(
-                    f"{self.quantization} quantization is currently not "
-                    f"supported in TPU Backend.")
+            current_platform.verify_quantization(self.quantization)
             if self.quantization not in optimized_quantization_methods:
                 logger.warning(
                     "%s quantization is not fully "
                     "optimized yet. The speed can be slower than "
                     "non-quantized models.", self.quantization)
-            if (self.quantization == "awq" and current_platform.is_rocm()
-                    and not envs.VLLM_USE_TRITON_AWQ):
-                logger.warning(
-                    "Using AWQ quantization with ROCm, but VLLM_USE_TRITON_AWQ"
-                    " is not set, enabling VLLM_USE_TRITON_AWQ.")
-                envs.VLLM_USE_TRITON_AWQ = True
-            if current_platform.is_neuron(
-            ) and self.quantization not in neuron_supported_quantization:
-                raise ValueError(
-                    f"{self.quantization} quantization is currently not "
-                    f"supported in Neuron Backend.")
 
     def _verify_cuda_graph(self) -> None:
         if self.max_seq_len_to_capture is None:

vllm/platforms/cpu.py

@@ -19,6 +19,7 @@
 
 class CpuPlatform(Platform):
     _enum = PlatformEnum.CPU
+    device_name: str = "cpu"
     device_type: str = "cpu"
     dispatch_key: str = "CPU"
 

vllm/platforms/cuda.py

@@ -72,6 +72,7 @@ def wrapper(*args: _P.args, **kwargs: _P.kwargs) -> _R:
 
 class CudaPlatformBase(Platform):
     _enum = PlatformEnum.CUDA
+    device_name: str = "cuda"
     device_type: str = "cuda"
     dispatch_key: str = "CUDA"
 

vllm/platforms/hpu.py

@@ -12,6 +12,7 @@
 
 class HpuPlatform(Platform):
     _enum = PlatformEnum.HPU
+    device_name: str = "hpu"
     device_type: str = "hpu"
     dispatch_key: str = "HPU"
 

vllm/platforms/interface.py

@@ -56,11 +56,13 @@ def to_int(self) -> int:
 
 class Platform:
     _enum: PlatformEnum
+    device_name: str
     device_type: str
     # available dispatch keys:
     # check https://github.com/pytorch/pytorch/blob/313dac6c1ca0fa0cde32477509cce32089f8532a/torchgen/model.py#L134 # noqa
     # use "CPU" as a fallback for platforms not registered in PyTorch
     dispatch_key: str = "CPU"
+    supported_quantization: list[str] = []
 
     def is_cuda(self) -> bool:
         return self._enum == PlatformEnum.CUDA
@@ -171,6 +173,17 @@ def check_and_update_config(cls, vllm_config: VllmConfig) -> None:
         """
         pass
 
+    @classmethod
+    def verify_quantization(cls, quant: str) -> None:
+        """
+        Verify whether the quantization is supported by the current platform.
+        """
+        if cls.supported_quantization and \
+            quant not in cls.supported_quantization:
+            raise ValueError(
+                f"{quant} quantization is currently not supported in "
+                f"{cls.device_name}.")
+
 
 class UnspecifiedPlatform(Platform):
     _enum = PlatformEnum.UNSPECIFIED

vllm/platforms/neuron.py

@@ -10,7 +10,9 @@
 
 class NeuronPlatform(Platform):
     _enum = PlatformEnum.NEURON
+    device_name: str = "neuron"
     device_type: str = "neuron"
+    supported_quantization: list[str] = ["neuron_quant"]
 
     @classmethod
     def get_device_name(cls, device_id: int = 0) -> str:

vllm/platforms/openvino.py

@@ -23,6 +23,7 @@
 
 class OpenVinoPlatform(Platform):
     _enum = PlatformEnum.OPENVINO
+    device_name: str = "openvino"
     device_type: str = "openvino"
     dispatch_key: str = "CPU"
 

vllm/platforms/rocm.py

@@ -4,6 +4,7 @@
 
 import torch
 
+import vllm.envs as envs
 from vllm.logger import init_logger
 
 from .interface import DeviceCapability, Platform, PlatformEnum, _Backend
@@ -35,8 +36,13 @@
 
 class RocmPlatform(Platform):
     _enum = PlatformEnum.ROCM
+    device_name: str = "rocm"
     device_type: str = "cuda"
     dispatch_key: str = "CUDA"
+    supported_quantization: list[str] = [
+        "awq", "gptq", "fp8", "compressed_tensors", "compressed-tensors",
+        "fbgemm_fp8", "gguf"
+    ]
 
     @classmethod
     def get_default_attn_backend(cls, selected_backend: _Backend) -> _Backend:
@@ -79,3 +85,12 @@ def check_and_update_config(cls, vllm_config: VllmConfig) -> None:
                     "vllm.spec_decode.spec_decode_worker.create_spec_worker"
             else:
                 parallel_config.worker_cls = "vllm.worker.worker.Worker"
+
+    @classmethod
+    def verify_quantization(cls, quant: str) -> None:
+        super().verify_quantization(quant)
+        if quant == "awq" and not envs.VLLM_USE_TRITON_AWQ:
+            logger.warning(
+                "Using AWQ quantization with ROCm, but VLLM_USE_TRITON_AWQ"
+                " is not set, enabling VLLM_USE_TRITON_AWQ.")
+        envs.VLLM_USE_TRITON_AWQ = True

vllm/platforms/tpu.py

@@ -16,8 +16,10 @@
 
 class TpuPlatform(Platform):
     _enum = PlatformEnum.TPU
+    device_name: str = "tpu"
     device_type: str = "tpu"
     dispatch_key: str = "XLA"
+    supported_quantization: list[str] = ["tpu_int8"]
 
     @classmethod
     def get_default_attn_backend(cls, selected_backend: _Backend) -> _Backend:

vllm/platforms/xpu.py

@@ -16,6 +16,7 @@
 
 class XPUPlatform(Platform):
     _enum = PlatformEnum.XPU
+    device_name: str = "xpu"
     device_type: str = "xpu"
     dispatch_key: str = "XPU"