message: Use an easier to read time readout
diff: from tensorflow.compiler.plugin.poplar.driver.trace_pb2 import IpuTraceEvent
  from tensorflow.core.protobuf import config_pb2
  +import time
  +
  def create_ipu_config(profiling=False, num_ipus=None, tiles_per_ipu=None):
  """Create the IPU options for an IPU model device.
  @@ -71,10 +73,12 @@ def extract_all_strings_from_event_trace(events):
  for e in events:
  evt = IpuTraceEvent.FromString(e)
  - result = result + ("-" * 70) + "\n==> Event @" + str(evt.timestamp) + ": "
  + result = result + ("-" * 70) + "\n=> @ " + \
  + time.strftime('%F %T %z', time.localtime(evt.timestamp)) + ": "
  if evt.type == IpuTraceEvent.COMPILE:
  - evt_str = "Compile: " + evt.module_name + "\n" + evt.data_str
  + evt_str = "Compile: " + evt.module_name + "\n" + \
  + "Duration: " + str(evt.data_int) + " us\n" + evt.data_str
  elif evt.type == IpuTraceEvent.HOST_TO_DEVICE_TRANSFER:
  evt_str = "Host->Device\nHandle = " + evt.data_str + "\n"
  #"Bytes = " + str(evt.data_int)
  