[Insight-developers] CMAKE_BUILD_TYPE=Release and-frename-registers

[Bill Lorensen]

Gaetan,

Please update your build and see if my changes fix your problem. I turned
off optimization for code in vxl/v3p that is run at program startup.

Bill

On 9/1/06, Lorensen, William E (GE, Research) <lorensen at crd.ge.com> wrote:
>
> Gaetan,
>
> There was a problem in the vnl upgrade that caused infinite loop at
> startup of some tests. This was introduced by the vnl thread-safe upgrade in
> late July. However, that problem shoud have been fixed around August 4. I
> suspect that there is a similar problem in another netlib routine.
>
> I found the original problem by running a test from gdb and interupting
> the test after a short time. The traceback showed be the code that was
> looping.
>
> Bill
>
>
> -----Original Message-----
> From: insight-developers-bounces+lorensen=crd.ge.com at itk.org
> [mailto:insight-developers-bounces+lorensen=crd.ge.com at itk.org]On Behalf
> Of Gaetan Lehmann
> Sent: Thursday, August 31, 2006 11:12 AM
> To: Luis Ibanez
> Cc: insight-developers at itk.org
> Subject: Re: [Insight-developers] CMAKE_BUILD_TYPE=Release
> and-frename-registers
>
>
> On Thu, 31 Aug 2006 16:32:06 +0200, Luis Ibanez <luis.ibanez at kitware.com>
> wrote:
>
> >
> > Hi Gaetan,
> >
> > A while ago (three or four years) we confirmed that -O2 optimization
> > was not enough for getting the full advantage of the templated code
> > in ITK.   Since then we have use -O3 level. At the time the test we
> > done in particular in relation to the ImageIterators, which as you
> > know are a critical component of all ITK filters.
> >
> > Do you have a specific reason for not using O3 ?
> >
>
> Yes: the tests are not passing
> I think that's because -O3 activate the option -frename-registers.
> If I try to set this option by hand in cmake, I get the error message
>
>    -frename-registers causes runtime bugs.  It must be removed from your
> compilation options.
>
> So I guess that's a known problem :-)
>
> For example on
>
> http://www.itk.org/Testing/Sites/marvin.jouy.inra.fr/Mandriva2006.0-i586-gcc4.0.1-ExplicitInstantiation-Release/20060809-0100-Nightly/Test.html
> , you can see several (and some other errors caused by explicit
> instantiation). I still get the same timeouts (even without explicit
> instantiation) when compiled with -O3.
>
> Everything is fine with -O2 -finline-functions. The only option disabled
> in that case, compared to -O3, is -frename-registers.
>
> > ---
> >
> >
> > Also, when you say that the test are running "for ever", do you mean
> > the build process (compilation + linking) or the actual run-time
> > execution of the test ?
>
> the execution of the tests - see the link above
>
> >
> > Note that we have machines submitting to the Dahsboard that complete
> > in 3 hours the full build of ITK with Testing, Examples and the
> > wrapping for Tcl, Python and Java starting from a scratch.
> >
>
> I have the same build, on the same host, but in debug mode. Everything is
> fine in Debug mode: there is no timeout
>
> Gaetan
>
>
>
> >
> > ---
> >
> > Please let us know,
> >
> >
> >     Thanks
> >
> >
> >        Luis
> >
> >
> > --------------------
> > Gaetan Lehmann wrote:
> >>  Hi,
> >>  For some time, some tests produced by my release build are running
> >> for  ever (I have even stop submitting to the dashboard, because the
> >> tests are  too long).
> >> It seems that everything is fine when building with the default options
> >> of  my distro:
> >>    -O2 -g -pipe -Wp,-D_FORTIFY_SOURCE=2 -fomit-frame-pointer
> >> -march=i586  -mtune=pentiumpro -fasynchronous-unwind-tables
> >>   The only important difference seems to be the -O2 instead of the -O3
> >> used  by default for the Release CMAKE_BUILD_TYPE.
> >> According to gcc man:
> >>    -O3 Optimize yet more.  -O3 turns on all optimizations specified by
> >> -O2
> >>       and also turns on the -finline-functions and -frename-registers
> >>       options.
> >>  But -frename-registers is a rejected option in ITK, so shouldn't
> >> CMAKE_BUILD_TYPE=Release set the gcc options to
> >>    -O2 -finline-functions -DNDEBUG
> >>  instead of
> >>    -O3 -DNDEBUG
> >>  ?
> >>  Thanks,
> >>  Gaetan
> >>
> >
>
>
>
> --
> Gaëtan Lehmann
> Biologie du Développement et de la Reproduction
> INRA de Jouy-en-Josas (France)
> tel: +33 1 34 65 29 66    fax: 01 34 65 29 09
> http://voxel.jouy.inra.fr
> _______________________________________________
> Insight-developers mailing list
> Insight-developers at itk.org
> http://www.itk.org/mailman/listinfo/insight-developers
> _______________________________________________
> Insight-developers mailing list
> Insight-developers at itk.org
> http://www.itk.org/mailman/listinfo/insight-developers
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.itk.org/mailman/private/insight-developers/attachments/20060901/3a807cd6/attachment.htm