message: Added comm to read/write functions
diff: @@ -40,17 +40,18 @@ class TestAdiosWriteReadStringfullAPI(unittest.TestCase):
  adEngine.Close()
  def test_write_read_string_highAPI(self):
  + comm = MPI.COMM_WORLD
  theString = 'hello adios'
  bpFilename = 'string_test_highAPI.bp'
  varname = 'mystringvar'
  NSteps = 3
  - with adios2.open(bpFilename, "w") as fh:
  + with adios2.open(bpFilename, "w", comm) as fh:
  for step in range(NSteps):
  fh.write(varname, theString + str(step), end_step=True)
  - with adios2.open(bpFilename, "r") as fh:
  + with adios2.open(bpFilename, "r", comm) as fh:
  for fstep in fh:
  step = fstep.current_step()
  result = fstep.read(varname)
  