[yt-svn] [yt_analysis/yt] Streamline 3D parallel (issue #452)

[Anonymous]

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New issue 452: Streamline 3D parallel
https://bitbucket.org/yt_analysis/yt/issue/452/streamline-3d-parallel

Anonymous:

Hi, it seems streamline doesn't work in parallel. I used your code (http://yt-project.org/doc/visualizing/streamlines.html) for simple tests and run into this traceback: (i run it only with two processors so i would be as clear as possible)

Traceback (most recent call last):
  File "first_stream.py", line 16, in <module>
Traceback (most recent call last):
  File "first_stream.py", line 16, in <module>
    streamlines.integrate_through_volume()
    streamlines.integrate_through_volume()
  File "/user/yt-x86_64/src/yt-hg/yt/visualization/streamlines.py", line 144, in integrate_through_volume
  File "/user/yt-x86_64/src/yt-hg/yt/visualization/streamlines.py", line 144, in integrate_through_volume
    self._finalize_parallel(None)
      File "/user/yt-x86_64/src/yt-hg/yt/utilities/parallel_tools/parallel_analysis_interface.py", line 203, in passage
self._finalize_parallel(None)
  File "/user/yt-x86_64/src/yt-hg/yt/utilities/parallel_tools/parallel_analysis_interface.py", line 203, in passage
    return func(self, data, **kwargs)
  File "/user/yt-x86_64/src/yt-hg/yt/visualization/streamlines.py", line 149, in _finalize_parallel
    self.magnitudes = self.comm.mpi_allreduce(self.magnitudes, op='sum')
  File "/user/yt-x86_64/src/yt-hg/yt/utilities/parallel_tools/parallel_analysis_interface.py", line 203, in passage
    return func(self, data, **kwargs)
  File "/user/yt-x86_64/src/yt-hg/yt/visualization/streamlines.py", line 149, in _finalize_parallel
    return func(self, data, **kwargs)
  File "/user/yt-x86_64/src/yt-hg/yt/utilities/parallel_tools/parallel_analysis_interface.py", line 653, in mpi_allreduce
    self.magnitudes = self.comm.mpi_allreduce(self.magnitudes, op='sum')
  File "/user/yt-x86_64/src/yt-hg/yt/utilities/parallel_tools/parallel_analysis_interface.py", line 203, in passage
    return func(self, data, **kwargs)
  File "/user/yt-x86_64/src/yt-hg/yt/utilities/parallel_tools/parallel_analysis_interface.py", line 653, in mpi_allreduce
    return self.comm.allreduce(data, op)
  File "Comm.pyx", line 1228, in mpi4py.MPI.Comm.allreduce (src/mpi4py.MPI.c:80799)
  File "msgpickle.pxi", line 804, in mpi4py.MPI.PyMPI_allreduce (src/mpi4py.MPI.c:36192)
  File "msgpickle.pxi", line 772, in mpi4py.MPI._py_reduce (src/mpi4py.MPI.c:35754)
  File "Op.pyx", line 28, in mpi4py.MPI.Op.__call__ (src/mpi4py.MPI.c:60286)
  File "opimpl.pxi", line 13, in mpi4py.MPI._op_SUM (src/mpi4py.MPI.c:13919)
TypeError: unsupported operand type(s) for +: 'NoneType' and 'NoneType'
    return self.comm.allreduce(data, op)
  File "Comm.pyx", line 1228, in mpi4py.MPI.Comm.allreduce (src/mpi4py.MPI.c:80799)
  File "msgpickle.pxi", line 804, in mpi4py.MPI.PyMPI_allreduce (src/mpi4py.MPI.c:36192)
  File "msgpickle.pxi", line 772, in mpi4py.MPI._py_reduce (src/mpi4py.MPI.c:35754)
  File "Op.pyx", line 28, in mpi4py.MPI.Op.__call__ (src/mpi4py.MPI.c:60286)
  File "opimpl.pxi", line 13, in mpi4py.MPI._op_SUM (src/mpi4py.MPI.c:13919)
TypeError: unsupported operand type(s) for +: 'NoneType' and 'NoneType'


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