On 2008/10/03 11:14 -0700, sdfgsdhdshd wrote: > Anthony Boyd-2 wrote: > >> -djob-count=[number of cores] > > > > I don't think that job count changes things when you process a single > > input file though. If you specify multiple input files to process > > then lilypond will fork off into different jobs to get the work done. > > > > Are the new processes only on one processor? or several?
It's up to the operating system kernel to spread the load on all CPUs (or CPU cores); e.g. if you run "lilypond -djob-count=2" and you have no other processor time-consuming tasks at the same time (if this can ever happen on Vista :-P) on a dual core CPU, the kernel should spread each lilypond process on one different core. The reality may be a bit more complex, but this is roughly the principle. It may be possible to parallelize some portions of LilyPond code to take advantage of multi-core machines, which gradually become quite common, I'm tempted to have a look at it in the next months, but don't hold your breath :-) Cheers, John _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user
