phoronix-test-suite : Phoronix's comprehensive, cross-platform testing and benchmark suite ( http://www.phoronix-test-suite.com )
shoc : Scalable Heterogeneous Computing Benchmark Suite ( http://keeneland.gatech.edu/software/keeneland/shoc )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a spike
For Paludis use this rsync : rsync://gentoo.zugaina.org/spike-portage
If you have a problem : ycarus(-at-)zugaina.org