On 20 Jan, 2008, at 16:27, [EMAIL PROTECTED] wrote:
Ronald> What is interesting though is the difference between 32- bit andRonald> 64-bit code: Ronald> Python 2.5.2a0 (60124) Ronald> 32-bit: 52083 Ronald> 64-bit: 60871 Ronald> 64-bit code is significantly faster here (all of this on a Ronald> MacBook Pro 2.33Ghz/3GByte)Thanks. Is that something available on the entire line of Core 2 Duo CPUs? Is it something I can enable on my dual processor G5 or my G4 PowerBook? Ifso, let me know and I'll add more rows.
All Core2 systems are capable of running 64-bit code. I currently build 64-bit
interpreters using this command-line:./configure --disable-toolbox-glue CFLAGS="-arch x86_64" LDFLAGS="- arch x86_64" OPT="-arch x86_64 -O3 -fwrapv"
(and then the make/make install dance). G4 systems cannot run 64-bit code, G5's are the only PPC systems capable of running 64-bit code.
The framework that Apple ships with leopard is 64-bit as well, but they don't ship a 64-bit commandline interpreter with it. That's easy enough to fix, but I haven't managed to actually make time to do that.
Another long term plan, but probably shorter-term now that I know how much difference running in 64-bit mode makes, is creating a patch for python-2.6 that makes is possible to do a 4-way universal build on Leopard systems.
Ronald
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