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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"
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