On Sat, 2013-03-02 at 16:55 +0100, John Colvin wrote: […] > I'm not sure that's entirely fair. PyPy is fast because it > implements a JIT, not because it's written in RPython.
The second sentence is almost entirely true, the first I am not so sure. Armin Rigo used to manage Psycho which was an amendment to the CPython code base to include a JIT. He quit trying to keep that going and so CPython doesn't have a JIT of any real importance. Unladen Swallow dissapeared. The JIT framework is an integral part of RPython rather than being specific only to PyPy. The point is that for I/O bound systems all languages are more or less equivalent, for computational intensive code, JITs are needed for virtual machine based systems or they will not compete. -- Russel. ============================================================================= Dr Russel Winder t: +44 20 7585 2200 voip: sip:[email protected] 41 Buckmaster Road m: +44 7770 465 077 xmpp: [email protected] London SW11 1EN, UK w: www.russel.org.uk skype: russel_winder
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