"Mathias Gaunard" <mathias.gaunard@ens-lyon.org> wrote in message news:imsv07$67b$1@dough.gmane.org...
I'm not giving you any examples yet, because the high-level SIMD code is undergoing lots of changes recently, and things like sincos (which returns a tuple) are broken when you use the Proto-based interface :(. I'll come back to you shortly.
No problem...thanks in advance ;) ps. I'd be wiling to test/use a lower level interface...
ps. does NT2 support SSE1 for single precision floats? Unfortunately this is a must for me (and probably for a lot of people as there are quite a few Athlon XP's around) so I cannot use SSE2+ only libraries like Eigen...
I'm afraid not, it only supports SSE2 and upwards. But it could be a nice summer project to add support for SSE1 only...
But seriously, who targets that kind of old CPU? ;)
Actually, I'd say most 'serious' commercial projects that do not by themselves require 64bit-era machines to be usable. Athlon XP is a P4 era CPU that is/was more powerful and much cheaper than its Intel counterpart and it unfortunately lacked SSE2 instructions. You can see here http://www.kvraudio.com/forum/viewtopic.php?p=4402655#4402655 one of our customers saying that he still has a working P3 setup...A lot of such machines are still around and ticking (often as secondary 24/7 under-the-desk/in-the-attic machines)... Plus, AFAIK SSE2 does not yield enough gain over SSE1 for many/most single precision operations to warrant its 'automatic usage'/exclusion of non-SSE2 CPUs... ps. does NT2 provide a way to choose/use multiple instruction sets? Important so that one can, for example, detect the level of SSE supported by the machine and switch to an appropriate routine... -- "What Huxley teaches is that in the age of advanced technology, spiritual devastation is more likely to come from an enemy with a smiling face than from one whose countenance exudes suspicion and hate." Neil Postman