[vtkusers] vtkUnstructuredGrid::FindCell() fails to find pyramid cells on a Fujitsu FX10 (non-x86) platform?

[Andy Bauer]

Thanks for this fix.  I'll check it out.

Andy

On Tue, Apr 17, 2012 at 2:23 AM, Takuya OSHIMA
<oshima at eng.niigata-u.ac.jp>wrote:

> Hi Andy,
>
> Thank you for your reply. In fact I was using different versions of
> vtkPyramid for the SPARC and the x86 platforms (the former from
> exactly PV 3.14.1, the latter from a bit older git-master version
> around Jan.-Feb. of this year) and had missed a recent commit
> 6332bbee82445ed5a3c6cce81c0675f152ee8649 that was supposed to fix
> gradient issue at apex of a pyramid. Obviously, the commit requires
> another fix as attached. With the fix my program now works.
>
> I attached the same patch to the corresponding entry in the tracker:
> http://vtk.org/Bug/view.php?id=12917
>
> Thanks,
> Takuya
>
> Takuya OSHIMA, Ph.D.
> Faculty of Engineering, Niigata University
> 8050 Ikarashi-Ninocho, Nishi-ku, Niigata, 950-2181, JAPAN
>
>
> From: Andy Bauer <andy.bauer at kitware.com>
> Subject: Re: [vtkusers] vtkUnstructuredGrid::FindCell() fails to find
> pyramid cells on a Fujitsu FX10 (non-x86) platform?
> Date: Mon, 16 Apr 2012 09:30:32 -0400
>
> > Hi,
> >
> > I wonder if it's a tolerance issue in vtkPyramid::EvaluatePosition().
>  The
> > tolerance is set to 0.001.  You could try increasing that value as well
> as
> > increasing the 1.001 values and see if that solves your problem.
> >
> > Andy
> >
> > On Mon, Apr 16, 2012 at 8:43 AM, Takuya OSHIMA
> > <oshima at eng.niigata-u.ac.jp>wrote:
> >
> >> Hi,
> >>
> >> We have built VTK as a part of ParaView 3.14.1 on a Fujitsu FX10
> >> platform (SPARC64 IXfx). The built library mostly works, but for my
> >> program vtkUnstructuredGrid::FindCell() fails to find pyramid cells in
> >> my hex/pyramid/tetra-composite mesh. Contrarily, the same program
> >> works as expected on a x86 platform (Mac OS X 64bit).
> >>
> >> I have searched through the FindCell() code for cell type specific
> >> function calls and had a suspicion that vtkPyramid::EvaluatePosition()
> >> (which FindCell() should internally be calling as a virtual function)
> >> had an uninitialized variable or something but could not find anything
> >> wrong. So far I am completely lost.
> >>
> >> Has anyone experienced (and solved) a similar problem? Any ideas or
> >> thoughts?
> >>
> >> Platform: Fujitsu FX10 (SPARC64 IXfx)
> >> VTK version: VTK included in ParaView 3.14.1
> >> CMake version: 2.8.7
> >> Compiler: Fujitsu's FCCpx (cross-compilation on an x86 Linux platform)
> >> FCCpx_ENV (the compiler options): -Kfast -Xg -std=gnu++98
> >>
> >> Thanks,
> >> Takuya
> >>
> >> Takuya OSHIMA, Ph.D.
> >> Faculty of Engineering, Niigata University
> >> 8050 Ikarashi-Ninocho, Nishi-ku, Niigata, 950-2181, JAPAN
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