[Core] Default to using per_token quantization for fp8 when cutlass is supported. (#8651)

Signed-off-by: mgoin <michael@neuralmagic.com>
Co-authored-by: Michael Goin <mgoin@redhat.com>
Co-authored-by: mgoin <michael@neuralmagic.com>

vllm/model_executor/layers/quantization/fp8.py

@@ -355,7 +355,8 @@ class Fp8LinearMethod(LinearMethodBase):
             input_scale=layer.input_scale,
             bias=bias,
             cutlass_fp8_supported=self.cutlass_fp8_supported,
-            use_per_token_if_dynamic=False)
+            # Default to using per_token quantization if cutlass is supported
+            use_per_token_if_dynamic=self.cutlass_fp8_supported)
 
 
 class Fp8MoEMethod(FusedMoEMethodBase):