>>>>> "Han-Wen" == Han-Wen Nienhuys <hanw...@gmail.com> writes:
Han-Wen> On Mon, Aug 31, 2009 at 8:03 PM, Peter Han-Wen> Chubb<lily.u...@chubb.wattle.id.au> wrote: >> I think you'll find the main difference is in size of L2/L3 cache, >> and amount of RAM. Lily (like many object-oriented programs) tends >> to have quite a deep stack, and to use lots of memory --- which it >> visits in what looks to the processor like random orders --- so >> small caches generate lots of cache misses, which slows things >> down. If you run out of RAM and have to swap, things get even >> worse. Han-Wen> More importantly: LilyPond is single-threaded, so the number Han-Wen> of cores is irrelevant. That doesn't explain why going from the Core Duo to the Xeon dropped the time from 11 minutes to 4 minutes. The reason, as I said, is the increased cache size. -- Dr Peter Chubb www.nicta.com.au peter DOT chubb AT nicta.com.au http://www.ertos.nicta.com.au ERTOS within National ICT Australia _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user
