message: updating simple pytorch tutorial
diff: @@ -11,12 +11,14 @@ from pycylon import CylonContext
  from pycylon import Table
  from pycylon.csv import csv_reader
  -ctx: CylonContext = CylonContext(config=None)
  +ctx: CylonContext = CylonContext(config='mpi')
  base_path = "/tmp"
  -user_devices_file = os.path.join(base_path, 'user_device_tm_1.csv')
  -user_usage_file = os.path.join(base_path, 'user_usage_tm_1.csv')
  +rank = ctx.get_rank()
  +
  +user_devices_file = os.path.join(base_path, f'user_device_tm_{rank+1}.csv')
  +user_usage_file = os.path.join(base_path, f'user_usage_tm_{rank+1}.csv')
  user_devices_data: Table = csv_reader.read(ctx, user_devices_file, ',')
  user_usage_data: Table = csv_reader.read(ctx, user_usage_file, ',')
  @@ -34,7 +36,7 @@ user_devices_data.show_by_range(1, 5, 0, 4)
  print("-------------------------------------")
  user_usage_data.show_by_range(1, 5, 0, 4)
  -new_tb: Table = user_devices_data.join(ctx, table=user_usage_data, join_type='inner', algorithm='sort', left_col=0,
  +new_tb: Table = user_devices_data.distributed_join(ctx, table=user_usage_data, join_type='inner', algorithm='sort', left_col=0,
  right_col=3)
  print("----------------------")
  