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So your mesh has more than 1000 elements. I think that the way the python script is written the boundary conditions in a rea file is not correct. I had this issue in the past.<br class="">
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<div class="">On Nov 14, 2017, at 9:02 AM, <a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">
nek5000-users@lists.mcs.anl.gov</a> wrote:</div>
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<div dir="ltr" class="">Its a 25X25 square grid in 2D. Im trying to extrude this with 10 elements in the z direction.<br class="">
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<div dir="ltr" class="">On Tue, Nov 14, 2017 at 8:13 AM <<a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">nek5000-users@lists.mcs.anl.gov</a>> wrote:<br class="">
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<div style="word-wrap:break-word" class="">What is the number of elements in your mesh?</div>
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<div class="">On Nov 13, 2017, at 11:40 PM, <a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank" class="">
nek5000-users@lists.mcs.anl.gov</a> wrote:</div>
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<p dir="ltr" class="">Gmsh to .rea using CPraveen's python mesh converter.</p>
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<div dir="ltr" class="">On Mon, Nov 13, 2017, 10:52 PM <<a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank" class="">nek5000-users@lists.mcs.anl.gov</a>> wrote:<br class="">
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Looks like the boundary conditions in your .rea file are somehow messed up. How do you generate you .rea?<br class="">
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-----Original message-----<br class="">
> <a href="mailto:From%3Anek5000-users@lists.mcs.anl.gov" target="_blank" class="">
From:nek5000-users@lists.mcs.anl.gov</a> <<a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank" class="">nek5000-users@lists.mcs.anl.gov</a>><br class="">
> Sent: Tuesday 14th November 2017 4:47<br class="">
> To: <a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank" class="">nek5000-users@lists.mcs.anl.gov</a><br class="">
> Subject: [Nek5000-users] n2to3 mesh size error<br class="">
><br class="">
> Hi all,<br class="">
><br class="">
> I keep running into an error whenever I want to use n2to3 to extrude my mesh from 2 dimensions to 3. My workflow is as follows:<br class="">
><br class="">
> gmsh .geo file -> gmsh .msh file -> .rea file -> n2to3 > .rea (3D) file.<br class="">
><br class="">
> Now if the original 2D .rea file obtained from gmsh contains less than 1000 elements, n2to3 fails with the error<br class="">
><br class="">
> At line 651 of file n2to3.f (unit = 10, file = msh_test.rea)<br class="">
> Fortran runtime error: Bad value during integer read<br class="">
><br class="">
> However, should this not be the case (mesh size > 1000) its all smooth sailing. The trouble is with a mesh of that size my processor and memory requirements quickly blow up.<br class="">
><br class="">
> Incidentally, genmap fails under almost exactly the same conditions.<br class="">
><br class="">
> Is there a lower limit to mesh size issue for nek5000 that Im missing here?<br class="">
><br class="">
> Sincerely,<br class="">
> --<br class="">
> Amitvikram Dutta<br class="">
> Graduate Research Assistant<br class="">
> Fluid Mechanics Research Lab<br class="">
> University of Waterloo<br class="">
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<p dir="ltr" class=""><b class=""><font color="#000033" class="">Amitvikram Dutta</font></b></p>
<p dir="ltr" class="">Graduate Research Assistant</p>
<p dir="ltr" class="">Fluid Mechanics Research Lab</p>
<p dir="ltr" class="">University of Waterloo</p>
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<p dir="ltr" class=""><b class=""><font color="#000033" class="">Amitvikram Dutta</font></b></p>
<p dir="ltr" class="">Graduate Research Assistant</p>
<p dir="ltr" class="">Fluid Mechanics Research Lab</p>
<p dir="ltr" class="">University of Waterloo</p>
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