[linux-audio-user] Re: 64bit vs 32bit (was: Re: AMD64 question: update)

2006/7/12, Roberto Gordo Saez <roberto.gordo(a)gmail.com>om>: Okay, I don't have space (and time) for a second partition. And while I understand that my testing might not be the optimum test, I think your's isn't either: Because you compare fully using a 64bit system with using a 64bit system in 32bit-mode. It is like comparing a big motorcycle with the same motorcycle but slowed down. For sure the slowed-down version will not be as fast. Also german IT-newspaper c't has made some comparisons when opteron64 and intel xeons with 64bit went onto the market Their result was that the amd64 are faster than the intel64. And surprisingly enough the amd64 in 32-bit mode where almost as fast as in 64-bit mode while the intels where significantly slower in 32-bit mode than in 64-bit mode... I am thinking about some other test, as someone mentioned registers and memory and stuff, which I think are good to recognise, but for the "real" computing speed maybe a mathematical test would be better? A test that wouldn't need lots of memory and lots of registers and doesn't have lots of cache-misses? Like computing pi to a certain number of relevant numbers? And, yes, I am comparing apples with oranges. But that was the question at least here in the lab: Comparing single-turion64 with double Xeon32. And guess what: On rather simple code, without special SSE/MMX/etc optimisation, with the same compilerflags, the turion was significantly faster. So I would like to prove this observation by a good test. But comparing a retarded 64bit system with a full 64bit system isn't the solution. (Who would for example shut down half of the heating of his toaster anyway?) Arnold -- visit http://dillenburg.dyndns.org/~arnold/ --- Wenn man mit Raubkopien Bands wie Brosis oder Britney Spears wirklich verhindern könnte, würde ich mir noch heute einen Stapel Brenner und einen Sack Rohlinge kaufen.