On Mon, Oct 3, 2011 at 3:02 PM, Florian Weimer <f...@deneb.enyo.de> wrote: > * Adam Borowski: > >>> I would defend static libs for scientific apps. Static libs show a >>> significant performance benefit (2-40%, median around 5-10% but sometimes >>> far more with C++ apps) and so are standard in HPC still; >> >> If you see that big a difference, you do a lot of cross-file calls in >> tight loops. > > Not necessarily. -fPIC and -fPIE force calls to global functions > defined in the same translation unit to go through the PLT. They > aren't translated to direct IP-relative calls. For -fPIC, this is > required by the ELF specification (no kidding, this might seem strange > today).
Could we add a gcc flag and be non conformant ? I suppose it is only for using LD_PRELOAD. Bastien > > -- > To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org > with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org > Archive: http://lists.debian.org/87d3eefcsv....@mid.deneb.enyo.de > > -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAE2SPAaWyJb7GGnQT4cj+A0c9748a0CtSB8XMij5gP=vfdd...@mail.gmail.com
