[yt-users] error when running on cluster nodes

[Tsz Ka Li]

Hi all,
I run into an error which occurs when I submit a yt script to run on 
cluster nodes. The script runs successfully from the command line 
though, and I am NOT running MPI here. The error is as follows:

/Traceback (most recent call last):
   File "MergerTree.py", line 1, in <module>
     from yt.mods import *
   File "/turing/home/tszkali2/yt-ppc64/src/yt-hg/yt/mods.py", line 92, 
in <module>
     from yt.visualization.api import \
   File 
"/turing/home/tszkali2/yt-ppc64/src/yt-hg/yt/visualization/api.py", line 
34, in <module>
     from plot_collection import \
   File 
"/turing/home/tszkali2/yt-ppc64/src/yt-hg/yt/visualization/plot_collection.py", 
line 26, in <module>
     from matplotlib import figure
   File 
"/turing/home/tszkali2/yt-ppc64/lib/python2.6/site-packages/matplotlib/figure.py", 
line 16, in <module>
     import artist
   File 
"/turing/home/tszkali2/yt-ppc64/lib/python2.6/site-packages/matplotlib/artist.py", 
line 6, in <module>
     from transforms import Bbox, IdentityTransform, TransformedBbox, 
TransformedPath
   File 
"/turing/home/tszkali2/yt-ppc64/lib/python2.6/site-packages/matplotlib/transforms.py", 
line 34, in <module>
     from matplotlib._path import affine_transform
ImportError: 
/turing/home/tszkali2/yt-ppc64/lib/python2.6/site-packages/matplotlib/_path.so: 
undefined symbol: 
_ZZN2Py15PythonExtensionINS_22ExtensionModuleBasePtrEE9behaviorsEvE1p/

Apparently it is related to matplotlib. I tried to do something similar 
to the instructions on the wiki for CrayXT5 Installation
(http://yt.enzotools.org/wiki/CrayXT5Installation) in the section 
'Running on a compute node', but I still got the same error.

Does anyone have ideas on what this means? I appreciate any help from you.

Thanks,
Tsz Ka
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