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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>We have a fairly complex system with multiple actors, and
for each actor there are multiple transformations down its pipeline.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>It looks as though we are running into memory limitations
as, when we turn on more than 3 or 4 actors, we end up with the image not being
rendered properly. This manifests itself as a rendering of a plane being a
fixed colour instead of using the LUT, or strange values in the output of a
contoured grid, or nothing being displayed, whereas with fewer actors switched
on everything is fine.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>First question: is there any way that issues like this can
be detected programmatically? This would allow us to tell users to simplify
their options, or to implement memory management transparently to them.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Now we’re looking at doing some memory management to improve
things a bit, and the option seems to be between deleting components in the
rendering chain, or freeing up memory with ReleaseDataFlag, and I’m
weighing up the pros and cons of each one. ReleaseData has the benefit of keeping
the network intact, whereas with Delete we need to delete redundant components
once rendered, and then recreate the network if the input data changes or other
relevant parameters change. If we use Delete, does it free up much more memory
than ReleaseData? Is it any slower, with the extra processing involved in
recreating the network? Are there any other relevant issues I should consider?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>We are using VTK 4.2.2 within a VS2005 .Net environment.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Many thanks for any help.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Tim<o:p></o:p></span></font></p>
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