update for amp config refactoring

ppcls/static/train.py

@@ -95,7 +95,9 @@ def main(args):
     device = paddle.set_device(global_config["device"])
 
     # amp related config
-    if 'AMP' in config:
+    amp_config = config.get("AMP", None)
+    use_amp = True if amp_config and amp_config.get("use_amp", True) else False
+    if use_amp:
         AMP_RELATED_FLAGS_SETTING = {
             'FLAGS_cudnn_exhaustive_search': 1,
             'FLAGS_conv_workspace_size_limit': 1500,
@@ -159,15 +161,15 @@ def main(args):
     # load pretrained models or checkpoints
     init_model(global_config, train_prog, exe)
 
-    if 'AMP' in config:
+    if use_amp:
+        # for AMP O2
         if config["AMP"].get("level", "O1").upper() == "O2":
             use_fp16_test = True
             msg = "Only support FP16 evaluation when AMP O2 is enabled."
             logger.warning(msg)
-        elif "use_fp16_test" in config["AMP"]:
-            use_fp16_test = config["AMP"].get["use_fp16_test"]
+        # for AMP O1
         else:
-            use_fp16_test = False
+            use_fp16_test = config["AMP"].get("use_fp16_test", False)
 
         optimizer.amp_init(
             device,