[Pympi-users] mpi.gather to concatenate local lists into a global list

[Julian C. <rjc...@cs...>]

Pat

Another question re something I can't seem to get right: If CancelArray is a
local list (each of length 5 here), I would expect to be able to gather them
onto the root using:
>>> GCancelArray = mpi.gather(CancelArray)
However I always get errors. I looked through the docs and can't see
anything wrong. See below:

tks again

Julian Cook

>>> mpi.synchronizedWrite(mpi.rank,CancelArray,"\n")

0 [-789.73324828817942, -464.6985882238028,
16.309153244928655, -266.37351222857797, 18.729736717962286]
1 [22.883099073570527, -13.504610959914903, -29.992427874816066,
66.603246745603798, 17.72761679717194]
..
..
8 [-447.53648850008159, -1918.500086573147,
17.697240048083117, -30.830132520298719, 19.180049636673306]
9
[-713.58277359050896, -15.962444427288318, -305.60046463383247, -207.9735194
3615666, -132.35710231581811]

>>> GCancelArray = mpi.gather(CancelArray)
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
EOFError

>>> GCancelArray = mpi.gather([CancelArray])
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
EOFError