[vtk-developers] TestFixedPointRayCasterLinearCropped failure

Bill Lorensen bill.lorensen at gmail.com
Sun Feb 24 13:25:12 EST 2013


I can't get to to fail on my fedora system. I get a 0 error no matter how
many threads I specify. I'll try a couple of other systems I have access to.

On Sun, Feb 24, 2013 at 1:17 PM, David Gobbi <david.gobbi at gmail.com> wrote:

> I haven't been able to find the old mailing list discussions about
> this topic, but here is the original bug report that I made in 2011
> when I noticed the failing regression test.  It gives instructions
> that any developer can use to reproduce the bug.
> http://www.vtk.org/Bug/view.php?id=12115
>
> A more recent report from a user who saw the same bug.
> http://www.vtk.org/Bug/view.php?id=13420
>
> I've already fixed a few issues in this volume mapper related to
> 32-bit overflow, but this threading bug should probably get the
> attention of someone who is more familiar with the code.
>
>  - David
>
>
> On Sun, Feb 24, 2013 at 10:34 AM, David Gobbi <david.gobbi at gmail.com>
> wrote:
> > Bill,
> >
> > I can reproduce the failure on any computer by increasing the
> > DefaultNumberOfThreads in the multithreader.
> >
> > Also, this is the "fixed point" mapper, it uses integer arithmetic.
> > It should produce _identical_ results on all platforms.
> >
> > I'll see if I can dig up some of my earlier list postings on it.  I've
> > spent many hours investigating this issue, both by myself and with
> > other VTK users.
> >
> >  - David
> >
> > On Sun, Feb 24, 2013 at 9:57 AM, Bill Lorensen <bill.lorensen at gmail.com>
> wrote:
> >> David,
> >>
> >> What makes you think this is a threading issue? The failng error is
> pretty
> >> low, <20 on all failing systems and the images look visually similar.
> >> http://open.cdash.org/testDetails.php?test=178462199&build=2824975
> >>
> >> Bill
> >>
> >> --
> >> Unpaid intern in BillsBasement at noware dot com
>



-- 
Unpaid intern in BillsBasement at noware dot com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/vtk-developers/attachments/20130224/bb1f46fa/attachment.html>


More information about the vtk-developers mailing list