comm = MPI.COMM_WORLD
rank = comm.Get_rank()
# buf1 =
# buf2 = bytearray([0]*100)
filename = 'temp.txt'
def extent_fn(dtype):
print 'dtype: %s' % dtype
return 4
print MPI.Register_datarep('rep', None, None, extent_fn)
# print MPI.Register_datarep('native', None, None, extent_fn)
# open the file for read and write, create it if it does not exist,
# and delete it on close
fh = MPI.File.Open(comm,
filename,
amode=MPI.MODE_CREATE | MPI.MODE_RDWR
| MPI.MODE_DELETE_ON_CLOSE)
etype = MPI.INT
filetype = MPI.INT
# set the file view
# fh.Set_view(0, etype, filetype, 'rep')
fh.Set_view(0, etype, filetype, 'external32')
