I think PyCUDA should attempt to build correctly as 64bit so once the python64 bugs are shaken out, PyCUDA will be able to build on Mac OS X without special flags etc.
My understanding from multiple build attempts is that there is a bug in the various Mac 64bit python implementations causing them to run in 32bit even when forced 64; this should eventually get fixed (if it has not already). I admit after many days of frustration, I have not tried to build on mac64 in about 2 months; perhaps I will give it another go this week and report here to the list. The ability to devel on Macs is very useful, since newer macs include CUDA capable hardware... and there are lots of scientists with macs... Judging by the old queries on the mailing list, there are many people who have spent time fiddling with PyCUDA on mac64... so there must be significant interest in this feature. On Sun, Sep 19, 2010 at 8:55 PM, Andreas Kloeckner <[email protected]>wrote: > On Thu, 16 Sep 2010 14:37:31 -0400, gerald wrong <[email protected]> > wrote: > > Looking at PyCUDA setup.py, I found this: > > > > if 'darwin' in sys.platform: > > # prevent from building ppc since cuda on OS X is not compiled > for > > ppc > > # also, default to 32-bit build, since there doesn't appear to be > a > > # 64-bit CUDA on Mac yet. > > if "-arch" not in conf["CXXFLAGS"]: > > conf["CXXFLAGS"].extend(['-arch', 'i386', '-m32']) > > if "-arch" not in conf["LDFLAGS"]: > > conf["LDFLAGS"].extend(['-arch', 'i386', '-m32']) > > > > Since 64bit CUDA support on Mac OS X is a reality since at least CUDA3.1, > > this should be changed. I know there are other problems regarding 32/64 > > python stopping 64bit mac users at the moment (including myself), but > since > > changes are being made to the PyCUDA code to make it compatible with > CUDA3.2 > > anyway... > > It looks like this should just be killed wholesale--right? Or is there > anything more appropriate that it should be changed to? > > Andreas > >
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