def _fill_device(self):
        """Fill only the device in the system config accelerators and leave the execution providers None."""
        if not self.system_config.config.accelerators:
            self.system_config.config.accelerators = [{"device": "cpu"}]
        else:
            for accelerator in self.system_config.config.accelerators:
                if not accelerator.device:
                    accelerator.device = "cpu"
                    accelerator.execution_providers = None
Fill only the device in the system config accelerators and leave the execution providers None.
olive/systems/accelerator_creator.py