On Dec 12, 6:58 am, bearophileh...@lycos.com wrote: > sturlamolden: > > > On a recent benchmark Java 6 -server beats C compiled by GCC 4.2.3 And > > most of that magic comes from an implementation of a dynamically typed > > language (Smalltalk). [...] > >http://shootout.alioth.debian.org/u32q/benchmark.php?test=all〈=all > > That is indeed a nice result, JavaVM has come a long way from the > first one used for applets. That result comes mostly from the fact > that this is a test on a 4-core CPU, that is less easy to manage from > C. You can see that in the single 64-bit core > tests:http://shootout.alioth.debian.org/u64/benchmark.php?test=all〈=all
Whether or not it's less easy to manage from C is unclear, but you are correct to point out few of those C programs have been updated to exploit quadcore - so the reasonable comparison is with C++. And the benchmarks game also provides x86 measurements with programs forced onto a single core which shows GCC ahead http://shootout.alioth.debian.org/u32/benchmark.php?test=all&lang=all > And take a look at the memory used too, up to 34 times higher for the > JVM on the 4-core CPU. > > In the next years people that use low-level languages like C may need > to invent a new language fitter for multi-core CPUs, able to be used > on GPUs too (see the OpenCL), less error-prone than C, able to use the > CPU vector instructions efficiently. (The D language is probably unfit > for this purpose, because even if it's meant to be a system language, > I don't think it can be used much to replace C everywhere it's used > now.) A C+ maybe? :-) > > I agree that CPython may quite enjoy having something built-in like > Psyco, but it's a lot of work for an open source project. Probably > with 1/3 or 1/2 of the work poured on PyPy you may create that > improvement for CPython. Maybe PyPy will someday produce some fruit, > but I think they have used the wrong strategy: instead of trying to > create something very new that someday will work, it's often better to > try to improve something that today everybody uses, AND try to be > useful from almost the very beginning. > > Bye, > bearophile -- http://mail.python.org/mailman/listinfo/python-list
