@abstractmethod<EOL><INDENT>def execute_no_wait(self, cmd, walltime, envs={}, *args, **kwargs):<DEDENT>
pass<EOL>
Execute asynchronousely without waiting for exitcode

        Args:
            - cmd (string): Command string to execute over the channel
            - walltime (int) : Timeout in seconds

        KWargs:
            - envs (dict) : Environment variables to push to the remote side

        Returns:
            - the type of return value is channel specific