Add OnnxConfig

Author: simondanielsson

optimum/exporters/onnx/model_configs.py

@@ -506,6 +506,12 @@ class GemmaOnnxConfig(LlamaOnnxConfig):
     DUMMY_PKV_GENERATOR_CLASS = GemmaDummyPastKeyValuesGenerator
     MIN_TRANSFORMERS_VERSION = version.parse("4.38.0")
 
+@register_tasks_manager_onnx("gemma3", *[*COMMON_TEXT_GENERATION_TASKS, "text-classification"])
+class Gemma3OnnxConfig(LlamaOnnxConfig):
+    DUMMY_INPUT_GENERATOR_CLASSES = (DummyTextInputGenerator, GemmaDummyPastKeyValuesGenerator)
+    DUMMY_PKV_GENERATOR_CLASS = GemmaDummyPastKeyValuesGenerator
+    MIN_TRANSFORMERS_VERSION = version.parse("4.51.0")
+
 
 @register_tasks_manager_onnx("nemotron", *COMMON_TEXT_GENERATION_TASKS)
 class NemotronOnnxConfig(GemmaOnnxConfig):