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    I've hit that before. the RAW reader uses MPI-I/O, and MPI uses
    signed int everywhere in its API, so there are limits that you end
    up hitting. For instance to partition the data among processors one
    must give MPI-I/O the starting offset of the data in the file as a
    signed int, and that is limited to 2^31. <br>
    <br>
    Burlen<br>
    <br>
    <div class="moz-cite-prefix">On 11/22/2016 11:20 AM, Berk Geveci
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAE32kpXkG-By9FHTS61ReWKFjWjg1FRTd8XOq-zKWFw9d-NHvg@mail.gmail.com"
      type="cite">
      <div dir="ltr">Hmmm that happens to be around 4 GB which makes me
        wonder if there is a limit somewhere in that reader... Any
        chance you can try this on a Linux machine?</div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Thu, Nov 17, 2016 at 10:30 AM, Keyes
          S.D. <span dir="ltr"><<a moz-do-not-send="true"
              href="mailto:S.D.Keyes@soton.ac.uk" target="_blank">S.D.Keyes@soton.ac.uk</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear all,<br>
            <br>
            I am encountering issues when trying to import large 8 bit
            RAW volumes to Paraview 5.1.2 (64 bit).<br>
            <br>
            The file I wish to import has xyz dimensions of
            2000x2000x1920 voxels (Unsigned char), 7.5GB.  I am running
            a machine with 192 GB RAM and 12 CPU cores.<br>
            <br>
            I can import up to a 2000x2000x1000 crop of this file, but I
            encounter the following message when I attempt larger z
            dimensions:<br>
            <br>
            ERROR: In C:\bbd\df0abce0\source-<wbr>paraview\VTK\IO\Image\<wbr>vtkImageReader2.cxx,
            line 592<br>
            <br>
            vtkPVImageReader (0000000007767F90): Initialize: Could not
            open file \\cseg_2\ERC\SLS_201606\Myco_<wbr>2\CT2PpR3h1_\Hyphalseg_Raw_<wbr>2000_2000_1920_8bit_SKELETON_<wbr>FILT_PARAVIEW_TEST.raw<br>
            <br>
            <br>
            I cannot find an obvious memory ceiling within the paraview
            settings - any ideas as to whether there is some effective
            upper limit to import file size?<br>
            <br>
            Sam<br>
            <br>
            Samuel D Keyes, MEng, PhD<br>
            New Frontiers Fellow<br>
            Bioengineering / μVIS Centre for Computed Tomography<br>
            University of Southampton<br>
            E: <a moz-do-not-send="true"
              href="mailto:S.D.Keyes@soton.ac.uk">S.D.Keyes@soton.ac.uk</a><<a
              moz-do-not-send="true"
href="https://www.outlook.soton.ac.uk/owa/redir.aspx?SURL=dhUg3da8XR77LeItLDzJQwhAwmH0Wx6PHrXeKfxx2tOD3LCr737TCG0AYQBpAGwAdABvADoAUwAuAEQALgBLAGUAeQBlAHMAQABzAG8AdABvAG4ALgBhAGMALgB1AGsA&URL=mailto%3aS.D.Keyes%40soton.ac.uk"
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            T: 07898720248<br>
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