[yt-users] error Zero sized dimension for non-unlimited dimension

[Jean-Claude Passy]

Dear all,

I am encountering some issues when running the script enclosed:

######################################################################################################
loading DM_part/DD0001/CommonEnvelope0001

yt         INFO       2010-06-03 17:36:57,270 Storing the binary hierarchy

yt         INFO       2010-06-03 17:36:57,523 Gathering a field list 
(this may take a moment.)

Traceback (most recent call last):

  File "script2body.py", line 39, in <module>

    region = data.h.region([0.5, 0.5, 0.5], [0.0, 0.0, 0.0], [1.0, 1.0, 
1.0])

  File 
"/rpod2/jcpassy/yt-x86_64/src/yt-trunk-svn/yt/lagos/OutputTypes.py", 
line 150, in _get_hierarchy

    self.__hierarchy = self._hierarchy_class(self, 
data_style=self.data_style)

  File 
"/rpod2/jcpassy/yt-x86_64/src/yt-trunk-svn/yt/lagos/HierarchyType.py", 
line 374, in __init__

    AMRHierarchy.__init__(self, pf, data_style)

  File 
"/rpod2/jcpassy/yt-x86_64/src/yt-trunk-svn/yt/lagos/HierarchyType.py", 
line 64, in __init__

    self._detect_fields()

  File 
"/rpod2/jcpassy/yt-x86_64/src/yt-trunk-svn/yt/lagos/HierarchyType.py", 
line 615, in _detect_fields

    self.save_data(list(field_list),"/","DataFields",passthrough=True)

  File 
"/rpod2/jcpassy/yt-x86_64/src/yt-trunk-svn/yt/lagos/HierarchyType.py", 
line 192, in _save_data

    arr = myGroup.create_dataset(name,data=array)

  File 
"/rpod2/jcpassy/yt-x86_64/lib/python2.6/site-packages/h5py-1.2.0-py2.6-linux-x86_64.egg/h5py/highlevel.py", 
line 353, in create_dataset

    return Dataset(self, name, *args, **kwds)

  File 
"/rpod2/jcpassy/yt-x86_64/lib/python2.6/site-packages/h5py-1.2.0-py2.6-linux-x86_64.egg/h5py/highlevel.py", 
line 856, in __init__

    space_id = h5s.create_simple(shape, maxshape)

  File 
"/rpod2/jcpassy/yt-x86_64/lib/python2.6/site-packages/h5py-1.2.0-py2.6-linux-x86_64.egg/h5py/_sync.py", 
line 88, in wrap

    return func(*args, **kwds)

  File "h5s.pyx", line 106, in h5py.h5s.create_simple (h5py/h5s.c:973)

h5py._stub.ValueError: Zero sized dimension for non-unlimited dimension 
(Function arguments: Bad value)
######################################################################################################

The weird thing is that if I run the script again, it works and then 
breaks when trying to read the next file 
(DM_part/DD0001/CommonEnvelope0001), and so on... Data contain only 2 
particles without gas and as far as I remember, I could execute those 
commands without problems before.

I would appreciate if someone could help me with that.
Thanks a lot,

Jean-Claude
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