Re: TBB license change and package rebuilds - openmp issues

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Friday, 09 September 2016 at 18:22, Orion Poplawski wrote:
> On 09/09/2016 08:24 AM, Jerry James wrote:
> > There is no soname bump in this release, but one section of the API
> > changed in a backwards-incompatible way.  
> 
> If they broke ABI, why wasn't the soname bumped?
> 
> > If the suitesparse maintainer does not object, I would also like to
> > fix something I noticed in the build logs.  GCC complains about
> > unrecognized pragmas.
> > - #pragma ivdep: I propose to change all instances of this to #pragma GCC ivdep.
> > - #pragma novector: there is no GCC equivalent, so nothing can be done here.
> > - #pragma omp ...: I propose to build CHOLMOD with -fopenmp so these
> > will be defined and used.
> 
> I'm concerned about this last change - if I understand it correctly everything
> that link to CHOLMOD will now need to use -fopenmp as well.  I'm not
> necessarily opposed to this, but it does have larger ramifications.  I know in
> various places libraries will provide both serial and openmp versions.  I
> wonder if it's time for Fedora to work out a scheme for this, or perhaps
> simply embrace the multi-core age and accept openmp versions as standard.

I'd be wary against making it default. Thread-safety is still not
universal and sometimes multi-threading makes things slower.

Regards,
Dominik
-- 
Fedora http://fedoraproject.org/wiki/User:Rathann
RPMFusion http://rpmfusion.org
"Faith manages."
        -- Delenn to Lennier in Babylon 5:"Confessions and Lamentations"
--
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxxx
https://lists.fedoraproject.org/admin/lists/devel@xxxxxxxxxxxxxxxxxxxxxxx




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Fedora Announce]     [Fedora Kernel]     [Fedora Testing]     [Fedora Formulas]     [Fedora PHP Devel]     [Kernel Development]     [Fedora Legacy]     [Fedora Maintainers]     [Fedora Desktop]     [PAM]     [Red Hat Development]     [Gimp]     [Yosemite News]
  Powered by Linux