ultralytics 8.0.190 add thop>=0.1.1 to requirements.txt (#5162)

Co-authored-by: JohanWesto <Johan.westo@gmail.com>
Co-authored-by: Muhammad Rizwan Munawar <62513924+RizwanMunawar@users.noreply.github.com>
Co-authored-by: StephenBeirlaen <11806615+StephenBeirlaen@users.noreply.github.com>

ultralytics/engine/exporter.py

@@ -627,6 +627,9 @@ class Exporter:
         if builder.platform_has_fast_fp16 and self.args.half:
             config.set_flag(trt.BuilderFlag.FP16)
 
+        del self.model
+        torch.cuda.empty_cache()
+
         # Write file
         with builder.build_engine(network, config) as engine, open(f, 'wb') as t:
             # Metadata