Support FP8 FA from Quark format

Author: BowenBao

vllm/model_executor/layers/quantization/quark/quark.py

@@ -153,6 +153,17 @@ def _check_scheme_supported(self,
         else:
             return False
 
+    def is_fp8_w8a8(self) -> bool:
+        # Returns True if all quantized layers in model are fp8 w8a8.
+        global_quant_config = self.quant_config.get("global_quant_config")
+        layer_quant_configs = self.quant_config.get("layer_quant_config")
+        for quant_config in (global_quant_config,
+                             *layer_quant_configs.values()):
+            if not self._is_fp8_w8a8(quant_config.get("weight"),
+                                     quant_config.get("input_tensors")):
+                return False
+        return True
+
     def _is_fp8_w8a8(self, weight_quant: Optional[Dict[str, Any]],
                      input_quant: Optional[Dict[str, Any]]) -> bool:
         # Confirm weights and input quantized.

vllm/model_executor/models/grok1.py

@@ -200,7 +200,7 @@ def __init__(
         self.hidden_size = config.hidden_size
         self.use_fp8 = isinstance(
             quant_config, Fp8Config) or (isinstance(quant_config, QuarkConfig)
-                                         and quant_config._is_fp8_w8a8)
+                                         and quant_config.is_fp8_w8a8())
         # Requires transformers > 4.32.0
         rope_theta = getattr(config, "rope_theta", 10000)
         self.attn = Grok1Attention(hidden_size=self.hidden_size,

vllm/model_executor/models/llama.py

@@ -87,7 +87,7 @@ def __init__(
         )
         self.use_fp8 = (isinstance(quant_config, Fp8Config) or
                         (isinstance(quant_config, QuarkConfig)
-                         and quant_config._is_fp8_w8a8)
+                         and quant_config.is_fp8_w8a8())
                         if current_platform.is_rocm() and not is_navi() else
                         False)
         if hidden_act != "silu":
@@ -201,7 +201,7 @@ def __init__(self,
         # For CUDA devices and Navi4x, attn_fp8 will be set to false.
         use_fp8 = isinstance(
             quant_config, Fp8Config) or (isinstance(quant_config, QuarkConfig)
-                                         and quant_config._is_fp8_w8a8)
+                                         and quant_config.is_fp8_w8a8())
         self.attn_fp8_out = envs.VLLM_USE_ROCM_CUSTOM_PAGED_ATTN_FP8_OUT \
                         and current_platform.is_rocm() \
                         and not is_navi() \
@@ -248,7 +248,7 @@ def __init__(
         self.hidden_size = config.hidden_size
         self.use_fp8 = (isinstance(quant_config, Fp8Config) or
                         (isinstance(quant_config, QuarkConfig)
-                         and quant_config._is_fp8_w8a8)
+                         and quant_config.is_fp8_w8a8())
                         if current_platform.is_rocm() and not is_navi() else
                         False)
         rope_theta = getattr(config, "rope_theta", 10000)