On Jan 11, 9:41 am, Hrvoje Niksic <[EMAIL PROTECTED]> wrote: > Bruno Desthuilliers <[EMAIL PROTECTED]> > writes: > > > fact 1: CPython compiles source code to byte-code. > > fact 2: CPython executes this byte-code. > > fact 3: Sun's JDK compiles source code to byte-code. > > fact 4: Sun's JDK executes this byte-code. > > > Care to prove me wrong on any of these points ? Don't bother: you > > can't. > > Fact 4 is misleading because it is only one option available to Sun's > JDK. Sun's JDK is also capable of transforming the byte-code to > native code and letting the processor execute that instead of the > original byte code, and that is where the most significant speed > increase comes from. Most importantly, it does so automatically, by > default, with no programmer intervention or configuration, and with > 100% compatibility, so it doesn't compare well to Python accelerators > like psyco.
Plus, IIRC Java's JIT is not limited to optimizing special cases, while psyco helps primarily with number-crunching code (admittedly an important special case) and can have zero or even (small) negative effect on arbitrary Python programs. George -- http://mail.python.org/mailman/listinfo/python-list
