<div dir="ltr">Ianl, <div><br></div><div>It looks like there is something going on with GPU determining how to handle the data well so it seems to be swapping data in-out from main-memory. You probably want to play some more with <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">ImageSampleDistance (set it to 2.0). Also SmartVolumeMapper may help as well. </span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">- aashish</span></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Mar 21, 2018 at 11:53 AM, ianl <span dir="ltr"><<a href="mailto:ilindsay@insigniamedical.co.uk" target="_blank">ilindsay@insigniamedical.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Two volumes in different VTK windows<br>
<br>
I see the same issue with the AMD FirePro V5900 card (also 2GB) we have<br>
here, but much less pronounced. Volumes of a smaller size seem to trigger<br>
the problem more easily, so it seems as though the 900 slice sets are over<br>
some threshold for that card and are generally slower so it is difficult to<br>
tell. We don't have any NVidia cards unfortunately at the moment to test<br>
with.<br>
<div class="HOEnZb"><div class="h5"><br>
<br>
<br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><font face="trebuchet ms, sans-serif"><i>| Aashish Chaudhary <br>| Technical Leader         <br>| Kitware Inc.            <br></i></font><div><i><font face="trebuchet ms, sans-serif">| </font><a href="http://www.kitware.com/company/team/chaudhary.html" target="_blank">http://www.kitware.com/company/team/chaudhary.html</a></i></div></div></div>
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