old_contents: #!/usr/bin/env python
  """
  Created on Fri Mar 14 15:25:36 2014
  
  @author: ibackus
  """
  
  import time
  
  t0 = time.time()
  import matplotlib.pyplot as plt
  import numpy as np
  import datetime
  import sys
  
  t1 = time.time()
  print 'Importing took {} s'.format(t1-t0)
  
  if len(sys.argv) < 2:
      
      print 'USAGE:     walltime filename'
      
  else:
      
      fname = sys.argv[-1]
      log_file = np.genfromtxt(fname, comments='#', delimiter=' ')
      walltime_total = datetime.timedelta(seconds = log_file[:,-1].sum())
      walltime_avg = datetime.timedelta(seconds = log_file[:,-1].mean())
  
      print 'Total walltime: '
      print str(walltime_total)
      print 'Average walltime per step:'
      print str(walltime_avg)
      
      plt.plot(log_file[:,-1],'x')
  
      t2 = time.time()
      print 'Running took an extra {} s'.format(t2-t1)
      print 'For a total of {} s'.format(t2 - t0)
      
      plt.show()
new_contents: #!/usr/bin/env python
  """
  Created on Fri Mar 14 15:25:36 2014
  
  @author: ibackus
  """
  
  import matplotlib.pyplot as plt
  import numpy as np
  import datetime
  import sys
  
  if len(sys.argv) < 2:
      
      print 'USAGE:     walltime filename'
      
  else:
      
      fname = sys.argv[-1]
      log_file = np.genfromtxt(fname, comments='#', delimiter=' ')
      walltime_total = datetime.timedelta(seconds = log_file[:,-1].sum())
      walltime_avg = datetime.timedelta(seconds = log_file[:,-1].mean())
  
      print 'Total walltime: '
      print str(walltime_total)
      print 'Average walltime per step:'
      print str(walltime_avg)
      
      plt.plot(log_file[:,-1],'x')
      plt.show()
subject: Revert "Print statements added for profiling"