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    <p>Let me add a possible answer: Do you think it might be worthwile
      to try compiling Paraview with Mesa on Windows (version 7)? As it
      seems that the "native" OpenGL support is not really stable with
      the latest driver - is there a chance that going through Mesa 3D
      would improve the situation? Or is it even impossible, so I should
      better not even bother trying?</p>
    <p>Thanks for any helpful hint!</p>
    <p>I mean: It is possible to do some limited working with a
      "ticklish software" that tends to crash regularly (first of all:
      always save everything immediately!), but it is not really so much
      fun...<br>
    </p>
    <p>Regards,</p>
    <p>Cornelis<br>
    </p>
    <div class="moz-cite-prefix">Am 29.08.2017 um 19:20 schrieb Cornelis
      Bockemühl:<br>
    </div>
    <blockquote
cite="mid:CACqg2jccEeONfS=LHD2gf=sisEX180HNsb=1kTuKPkjR7XHR1g@mail.gmail.com"
      type="cite">
      <div dir="auto">A little after a couple of days: It turns out that
        while the display is now complete, the program behaves now
        rather "ticklish" Doing too much of zooming, panning etc with a
        large model leads to crushes of the graphics driver (the message
        says explicitly!), the PV prog window becomes completely white
        and the program does not react any more; has to be killed with
        the task manager.
        <div dir="auto"><br>
        </div>
        <div dir="auto">So better save as the first action after a
          lengthy calculation, and only then try everytjing else to
          investigate the result.</div>
        <div dir="auto"><br>
        </div>
        <div dir="auto">Regards, Cornelis</div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">Am 26.08.2017 23:37 schrieb "Cornelis
          Bockemühl" <<a moz-do-not-send="true"
            href="mailto:cornelis.bockemuehl@gmail.com">cornelis.bockemuehl@gmail.com</a>>:<br
            type="attribution">
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="auto">Thanks Ken, this solved indeed already the
              problem!
              <div dir="auto"><br>
              </div>
              <div dir="auto">It was actually already my first guess, so
                I went to the Intel site and installed from there a tool
                that was supposed to check for potential driver updates
                - which found nothing!</div>
              <div dir="auto"><br>
              </div>
              <div dir="auto">The driver that actually helped came
                finally from the Lenovo site.</div>
              <div dir="auto"><br>
              </div>
              <div dir="auto">Regards, Cornelis</div>
            </div>
            <div class="gmail_extra"><br>
              <div class="gmail_quote">Am 26.08.2017 07:42 schrieb "Ken
                Martin" <<a moz-do-not-send="true"
                  href="mailto:ken.martin@kitware.com" target="_blank">ken.martin@kitware.com</a>>:<br
                  type="attribution">
                <blockquote class="gmail_quote" style="margin:0 0 0
                  .8ex;border-left:1px #ccc solid;padding-left:1ex">
                  <div dir="ltr">If possible can you try updating the
                    Intel driver for your HD4000 and see if that makes a
                    difference?
                    <div><br>
                    </div>
                    <div><a moz-do-not-send="true"
href="https://downloadcenter.intel.com/product/81499/Intel-HD-Graphics-4000"
                        target="_blank">https://downloadcenter.intel.c<wbr>om/product/81499/Intel-HD-Grap<wbr>hics-4000</a><br>
                    </div>
                    <div><br>
                    </div>
                    <div><br>
                    </div>
                  </div>
                  <div class="gmail_extra"><br>
                    <div class="gmail_quote">On Fri, Aug 25, 2017 at
                      11:11 PM, Cornelis Bockemühl <span dir="ltr"><<a
                          moz-do-not-send="true"
                          href="mailto:cornelis.bockemuehl@gmail.com"
                          target="_blank">cornelis.bockemuehl@gmail.com</a><wbr>></span>
                      wrote:<br>
                      <blockquote class="gmail_quote" style="margin:0 0
                        0 .8ex;border-left:1px #ccc
                        solid;padding-left:1ex">
                        <div dir="ltr"><span style="font-size:12.8px">Hello
                            all,</span>
                          <div style="font-size:12.8px"><br>
                          </div>
                          <div style="font-size:12.8px">With some
                            self-written plugin I am generating rather
                            large "unstructured grids". With a model
                            with something more than 700'000 blocks I
                            realized that on my Lenovo notebook I did
                            not get a complete display of all the
                            blocks, so I made tests with subsets of the
                            data. It turns out that with less than 1000
                            blocks everything works fine, with 20'000
                            blocks there are already some "reductions"
                            and finally with the full model even more:
                            see the attached Powerpoint with screenshots
                            (plus details about my system and the
                            Paraview version).</div>
                          <div style="font-size:12.8px"><br>
                          </div>
                          <div style="font-size:12.8px">My question is
                            now if there is possibly some kind of
                            "graphic card overflow" happening? I could
                            so far not test the software with the same
                            model on another computer.</div>
                          <div style="font-size:12.8px"><br>
                          </div>
                          <div style="font-size:12.8px">And whatever the
                            reason is: is there something that I can do
                            about it?</div>
                          <div style="font-size:12.8px"><br>
                          </div>
                          <div style="font-size:12.8px">It is to say
                            that the unstructured grid is a bit
                            "unconventional" by the fact that often
                            adjacent blocks do not have common edges and
                            points, sharing thus only common partial
                            faces. With this one possibility would be
                            that Paraview cannot properly carry out
                            certain optimizations that are relying on
                            the fact that neighbor blocks "normally"
                            (??) share a face, edges and points. However
                            I do not know whether this is an issue or
                            not!? In this case it might be an option to
                            change the entire data set to a set of just
                            cubes that happen to touch each other.</div>
                          <div style="font-size:12.8px"><br>
                          </div>
                          <div style="font-size:12.8px">Regards,
                            Cornelis</div>
                          <span
                            class="m_3042682579759502960m_-5033135493522682209HOEnZb"><font
                              color="#888888">
                              <div><br>
                              </div>
                              -- <br>
                              <div
class="m_3042682579759502960m_-5033135493522682209m_4444340612783606523gmail_signature">Cornelis
                                Bockemühl<br>
                                Basel, Schweiz<br>
                              </div>
                            </font></span></div>
                        <br>
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                    <div><br>
                    </div>
                    -- <br>
                    <div
                      class="m_3042682579759502960m_-5033135493522682209gmail_signature"
                      data-smartmail="gmail_signature">
                      <div dir="ltr">
                        <div>Ken Martin PhD
                          <div>Distinguished Engineer<br>
                            <span style="font-size:12.8px">Kitware Inc.</span><br>
                          </div>
                          <div>28 Corporate Drive<br>
                            Clifton Park NY 12065<br>
                            <div><br>
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