On Dec 19, 7:22 pm, Dima Pasechnik <dimp...@gmail.com> wrote: > On Dec 18, 7:58 pm, Volker Braun <vbraun.n...@gmail.com> wrote:> The tuning > is done in the "configure" script. I would have thought that if > > No, I don't think so. Atlas's INSTALL.txt says: > > "For the impatient, here is the basic outline: > ************************************************** > mkdir my_build_dir ; cd my_build_dir > /path/to/ATLAS/configure [flags] > make ! tune and compile library > ...." > > And I actually had success with this.... > > > that fails and you run "make" then you'd just build ATLAS with broken > > timings. Do you have a reference? > > can't find it now. But I'm pretty sure that's how it is. >
http://math-atlas.sourceforge.net/errata.html#tol It says that a restart is needed in this case. Not from scratch, but as explained here: http://math-atlas.sourceforge.net/errata.html#restart So I wasn't completely right - this restart is even "warmer" than the one I was proposing, and certainly much "warmer" than reconfiguring from the very beginning, as spkg does currently. Dima > > > > > > > > > > I'm still working on an updated ATLAS spkg that gives up automatic tuning > > after 2 tries and then proceeds to build with specific arch configurations. > > The latter can't fail but may not give the best performance. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org