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<p>Hi Andrea,</p>
<p>In my experience this is not uncommon on (modern) Windows
computers if many installed applications have added their paths to
the system path in front of the VTK DLLs path. Windows will test
many directories searching for the DLLs it needs to load. <br>
</p>
<p>Typing "SET" from command line should show you where VTK is in
the path. Windows adds the user path at the end of the system
path, so if VTK was manually added to the user path, it might be
likely at the very end of a long list of other paths.</p>
<p>The utility Process Monitor
(<a class="moz-txt-link-freetext" href="https://technet.microsoft.com/en-us/sysinternals/bb896645">https://technet.microsoft.com/en-us/sysinternals/bb896645</a>) can
also be used to see all the tests/searches the system will perform
during "import vtk"</p>
<p>I hope this might help,<br>
</p>
<p>Best Regards,</p>
<p>Andrea<br>
</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 17-Aug-16 5:17 PM, Andrea Gavana
wrote:<br>
</div>
<blockquote
cite="mid:CAEf70bwq3dYaTXo2r8p60Pc1M9sRWkYWFNfNyvnTV7Egri2fuw@mail.gmail.com"
type="cite">
<div dir="ltr"><span style="font-size:12.8px">Hello,</span>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px"> I have recently installed VTK
7.0 to be used via Python 2.7 using the excellent resources
from Christoph Gohlke (<a moz-do-not-send="true"
href="http://www.lfd.uci.edu/%7Egohlke/pythonlibs/"
target="_blank">http://www.lfd.uci.edu/~<wbr>gohlke/pythonlibs/</a>).
I have a considerably powerful machine at work - 96 GB RAM, 8
cores, 64 bit Windows 7 Enterprise. However, executing the
simple command below:</div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px">import vtk</div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px">takes more than 7 seconds on this
machine. I understand that there are quite a few modules to
import in the VTK hierarchy, but I was not expecting such a
dramatically slow operation. I also understand that this may
not be the perfect forum to post such a question, but maybe
someone else has encountered a similar behavior and he/she has
some explanation for it.</div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px">Any suggestion is more than
welcome, thank you in advance. I paste below the results of
profiling the simple import statement using the Python
profiler in this way:</div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px">python -m cProfile
test_import_vtk.py</div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px">Andrea.</div>
<div style="font-size:12.8px"><br>
</div>
<div style="font-size:12.8px"><font face="monospace, monospace"><br>
</font></div>
<div style="font-size:12.8px">
<div><font face="monospace, monospace"><b>File Name
Import Time (seconds)</b></font></div>
<div><font face="monospace, monospace">vtkIOImage.py
0.190</font></div>
<div><font face="monospace, monospace">vtkIOExodus.py
0.151</font></div>
<div><font face="monospace, monospace">vtkCommonCore.py
0.147</font></div>
<div><font face="monospace, monospace">vtkRenderingOpenGL2.py
0.124</font></div>
<div><font face="monospace, monospace">vtkRenderingFreeType.py
0.120</font></div>
<div><font face="monospace, monospace">vtkIOInfovis.py
0.113</font></div>
<div><font face="monospace, monospace">vtkIOParallel.py
0.106</font></div>
<div><font face="monospace, monospace">vtkIONetCDF.py
0.103</font></div>
<div><font face="monospace, monospace">vtkCommonColor.py
0.102</font></div>
<div><font face="monospace, monospace">vtkFiltersStatistics.py
0.101</font></div>
<div><font face="monospace, monospace">vtkFiltersVerdict.py
0.100</font></div>
<div><font face="monospace, monospace">vtkGeovisCore.py
0.100</font></div>
<div><font face="monospace, monospace">vtkIOAMR.py
0.100</font></div>
<div><font face="monospace, monospace">vtkIOXMLParser.py
0.099</font></div>
<div><font face="monospace, monospace">vtkIOMovie.py
0.097</font></div>
<div><font face="monospace, monospace">vtkCommonDataModel.py
0.096</font></div>
<div><font face="monospace, monospace">vtkCommonMath.py
0.091</font></div>
<div><font face="monospace, monospace">vtkCommonMisc.py
0.091</font></div>
<div><font face="monospace, monospace">vtkInteractionWidgets.py
0.091</font></div>
<div><font face="monospace, monospace">vtkRenderingVolume.py
0.090</font></div>
<div><font face="monospace, monospace">vtkCommonComputationalGeometry<wbr>.py
0.088</font></div>
<div><font face="monospace, monospace">vtkFiltersModeling.py
0.087</font></div>
<div><font face="monospace, monospace">vtkIOMINC.py
0.087</font></div>
<div><font face="monospace, monospace">vtkIOSQL.py
0.087</font></div>
<div><font face="monospace, monospace">vtkInfovisCore.py
0.087</font></div>
<div><font face="monospace, monospace">vtkFiltersHybrid.py
0.085</font></div>
<div><font face="monospace, monospace">vtkIOPLY.py
0.085</font></div>
<div><font face="monospace, monospace">vtkFiltersCore.py
0.084</font></div>
<div><font face="monospace, monospace">vtkImagingGeneral.py
0.084</font></div>
<div><font face="monospace, monospace">vtkRenderingLabel.py
0.083</font></div>
<div><font face="monospace, monospace">vtkImagingMath.py
0.082</font></div>
<div><font face="monospace, monospace">vtkInfovisLayout.py
0.082</font></div>
<div><font face="monospace, monospace">vtkCommonExecutionModel.py
0.081</font></div>
<div><font face="monospace, monospace">vtkIOCore.py
0.081</font></div>
<div><font face="monospace, monospace">vtkFiltersGeneric.py
0.080</font></div>
<div><font face="monospace, monospace">vtkIOEnSight.py
0.080</font></div>
<div><font face="monospace, monospace">vtkViewsContext2D.py
0.080</font></div>
<div><font face="monospace, monospace">vtkFiltersAMR.py
0.079</font></div>
<div><font face="monospace, monospace">vtkFiltersParallelImaging.py
0.079</font></div>
<div><font face="monospace, monospace">vtkImagingCore.py
0.079</font></div>
<div><font face="monospace, monospace">vtkImagingFourier.py
0.079</font></div>
<div><font face="monospace, monospace">vtkInteractionImage.py
0.079</font></div>
<div><font face="monospace, monospace">vtkInteractionStyle.py
0.079</font></div>
<div><font face="monospace, monospace">vtkRenderingContext2D.py
0.079</font></div>
<div><font face="monospace, monospace">vtkImagingColor.py
0.078</font></div>
<div><font face="monospace, monospace">vtkRenderingImage.py
0.078</font></div>
<div><font face="monospace, monospace">vtkRenderingVolumeOpenGL2.py
0.078</font></div>
<div><font face="monospace, monospace">vtkFiltersPython.py
0.077</font></div>
<div><font face="monospace, monospace">vtkIOParallelXML.py
0.077</font></div>
<div><font face="monospace, monospace">vtkImagingStatistics.py
0.077</font></div>
<div><font face="monospace, monospace">vtkViewsInfovis.py
0.077</font></div>
<div><font face="monospace, monospace">vtkFiltersSources.py
0.076</font></div>
<div><font face="monospace, monospace">vtkIOVideo.py
0.076</font></div>
<div><font face="monospace, monospace">vtkFiltersFlowPaths.py
0.075</font></div>
<div><font face="monospace, monospace">vtkFiltersParallel.py
0.075</font></div>
<div><font face="monospace, monospace">vtkFiltersSMP.py
0.075</font></div>
<div><font face="monospace, monospace">vtkFiltersSelection.py
0.075</font></div>
<div><font face="monospace, monospace">vtkIOImport.py
0.075</font></div>
<div><font face="monospace, monospace">vtkImagingHybrid.py
0.075</font></div>
<div><font face="monospace, monospace">vtkRenderingAnnotation.py
0.075</font></div>
<div><font face="monospace, monospace">vtkDomainsChemistry.py
0.073</font></div>
<div><font face="monospace, monospace">vtkFiltersImaging.py
0.073</font></div>
<div><font face="monospace, monospace">vtkRenderingCore.py
0.073</font></div>
<div><font face="monospace, monospace">vtkIOExport.py
0.072</font></div>
<div><font face="monospace, monospace">vtkIOLegacy.py
0.072</font></div>
<div><font face="monospace, monospace">vtkRenderingContextOpenGL2.py
0.072</font></div>
<div><font face="monospace, monospace">vtkCommonTransforms.py
0.071</font></div>
<div><font face="monospace, monospace">vtkFiltersGeneral.py
0.071</font></div>
<div><font face="monospace, monospace">vtkIOLSDyna.py
0.071</font></div>
<div><font face="monospace, monospace">vtkImagingMorphological.py
0.071</font></div>
<div><font face="monospace, monospace">vtkImagingStencil.py
0.071</font></div>
<div><font face="monospace, monospace">vtkIOXML.py
0.070</font></div>
<div><font face="monospace, monospace">vtkImagingSources.py
0.070</font></div>
<div><font face="monospace, monospace">vtkFiltersGeometry.py
0.069</font></div>
<div><font face="monospace, monospace">vtkFiltersHyperTree.py
0.069</font></div>
<div><font face="monospace, monospace">vtkFiltersProgrammable.py
0.069</font></div>
<div><font face="monospace, monospace">vtkCommonSystem.py
0.068</font></div>
<div><font face="monospace, monospace">vtkParallelCore.py
0.067</font></div>
<div><font face="monospace, monospace">vtkDomainsChemistryOpenGL2.py
0.066</font></div>
<div><font face="monospace, monospace">vtkFiltersExtraction.py
0.066</font></div>
<div><font face="monospace, monospace">vtkRenderingLOD.py
0.065</font></div>
<div><font face="monospace, monospace">vtkFiltersTexture.py
0.063</font></div>
<div><font face="monospace, monospace">vtkViewsCore.py
0.061</font></div>
<div><font face="monospace, monospace">vtkChartsCore.py
0.060</font></div>
<div><font face="monospace, monospace">vtkIOGeometry.py
0.059</font></div>
<div><font face="monospace, monospace"><br>
</font></div>
<div><font face="monospace, monospace"><b>Total
7.119</b></font></div>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
++++++++++++++++++++++++++++++++++++
Andrea Borsic Ph.D.
CEO & Founder NE Scientific LLC
Tel: +1 603 676 7450
Web: <a class="moz-txt-link-abbreviated" href="http://www.ne-scientific.com">www.ne-scientific.com</a>
Twitter: <a class="moz-txt-link-freetext" href="https://twitter.com/ne_scientific">https://twitter.com/ne_scientific</a></pre>
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