Rename time_to_next_job to last_submit_time to reduce confusion

    def run_simulation(self, jobs, timesteps):

        """ Generator that yields after each simulation tick """

        time_to_next_job = 0

        last_submit_time = 0

        self.timesteps = timesteps

        if self.debug: 

            limits = self.get_gauge_limits()

            print(limits)

        for _ in range(timesteps):

            while self.current_time >= time_to_next_job and jobs:

            while self.current_time >= last_submit_time and jobs:

                job = jobs.pop(0)

                self.schedule([job])

                if jobs: # Update time to next job based on the next job's scheduled time

                    time_to_next_job = job['submit_time']

                else: # No more jobs, set to infinity or some large number to avoid triggering again

                    time_to_next_job = float('inf')

                if jobs:

                    last_submit_time = job['submit_time']

                else: # No more jobs, set to infinity to avoid triggering again

                    last_submit_time = float('inf')

            yield self.tick()

            # Stop the simulation if no more jobs running or are in the queue