[petsc-dev] [GPU] Performance on Fermi

[Jed Brown]

On Fri, 27 Aug 2010 16:06:30 -0500, Keita Teranishi <keita at cray.com> wrote:
> Barry,
> 
> The CPU timing I reported was after recompiling the code (I removed PETSC_USE_DEBUG and GDB macros from petscconf.h).  

Unless you were manually overriding compiler flags, it still wasn't
optimized.  Please just reconfigure a new PETSC_ARCH --with-debugging=0.
It's as easy as

  foo-dbg/conf/reconfigure-foo-dbg.py --with-debugging=0 PETSC_ARCH=foo-opt
  make PETSC_ARCH=foo-opt

Jed