On Fri, 2010-10-08 at 15:42 -0400, DJ Delorie wrote: > > Any idea of the loss of performance given that virtually all PCs > > these days are actually 64 bit machines? > > My dual-core 3.2GHz machine supports 64-bit, but I installed a 32-bit > OS for compatibility. So, 64-bit math is a performance hit for me.
I'm not certain that is true.. or are you compiling with CFLAGS for a non 64-bit CPU? I thought the 32/64 bit OS issue was mostly to do with address pointers, rather than aritmetic. I was fairly sure one could execute 64bit native CPU arithmetic instructions under a 32-bit OS, just that the executable would not be portable to machines which didn't support those instructions. -- Peter Clifton Electrical Engineering Division, Engineering Department, University of Cambridge, 9, JJ Thomson Avenue, Cambridge CB3 0FA Tel: +44 (0)7729 980173 - (No signal in the lab!) Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me) _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user