The Intel Approximate
Math (AM) library has free SSE/SSE2 implementation for math
functions such as
sin(), log(), exp(); most interestingly,
it comes with documentation, relative error comparison, and a clock
cycle analysis for P3 and P4 CPUs.
gcc -mveclibabi=acml/svml should be explored next...
Upgraded from Karmic to Lucid and reboot failed; turned out an extra
usbfs (probably not needed
anymore) broke the boot
process: no error message, no
way to get to a console, recovery boot failed with same symptom, last
Running /scripts/init-bottom. Felt almost as
helpless as with Windoze...
upstart is a complicated beast.