Updated .npz loading. Broken Multi-Part-sim.py removed from tests/smoke.py

    # Read telemetry data (either npz file or via custom data loader)

    if args.replay[0].endswith(".npz"):  # Replay .npz file

        print(f"Loading {args.replay[0]}...")

        jobs = td.load_snapshot(args.replay[0])

        jobs, timestep_start_from_file, timestep_end_from_file, args_from_file = td.load_snapshot(args.replay[0])

        print("Intended to run with:" +\

              f"\n--system {args_from_file.system} " +\

              f"-ff {args_from_file.fastforward} " +\

              f"-t {args_from_file.time}\n" +\

              f"All Args:\n{args_from_file}"

              )

        if args.time is None:

            print("Set --time (necessary) and possibly --fasforward, to run .npz replay successfully!")

            exit()

        if args.scale:

            for job in tqdm(jobs, desc=f"Scaling jobs to {args.scale} nodes"):

    else:  # custom data loader

        print(*args.replay)

        jobs, timestep_start_from_data, timestep_end = td.load_data(args.replay)

        td.save_snapshot(jobs, filename=DIR_NAME)

        timestep_start += timestep_start_from_data  # + timestep_start_from_data

        timestep_start += timestep_start_from_data

        td.save_snapshot((jobs, timestep_start, timestep_end, args), filename=DIR_NAME)

    # Set number of timesteps based on the last job running which we assume

    # is the maximum value of submit_time + wall_time of all the jobs

    # If no arguments are given, run all tests

    if not args.tests:

        synthetic_workload_tests()

        hetero_tests()

        #hetero_tests()

        execute_system_tests(SYSTEMS.keys())

    else:

        # Validate each test name