I think that features such as SSE should be tested for after testing for the main chip core. So under /mpn/x86_64/k8 you'd have directories for any features not available on all k8's.
Bill. 2009/1/3 mabshoff <michael.absh...@mathematik.uni-dortmund.de>: > > > > On Jan 3, 2:25 pm, jason <ja...@njkfrudils.plus.com> wrote: >> On Jan 3, 9:00 am, "Bill Hart" <goodwillh...@googlemail.com> wrote: > > Hi, > >> > The new intel machines. And I don't know if all Dunnington's use the >> > same family/system CPUID etc. So there might be mutiple CPUID's we >> > need to add to config.guess. >> >> > Bill. >> >> We should change the lowest common denominator on a x86_64 system to >> something more useful than 486 , say P4 64bit without LAHF ? , then >> people can at least get mpir working on new machines without mucking >> about > > Well, the trouble was that configure believed it was a 32 bit system, > so I don't see much we can do there aside from attempting to compile > things in 64 bit mode. > >> For the K10 , we will need a separate directory for it , I have >> mpn_popcount and mpn_hamdist which will not run on the K8 , requires >> SSE4.1a or whatever it's called ... >> before 7/7.75 c/l now 1.5/1.75 c/l > > Wouldn't it be better to create a SSE4.1a directory and use that > assembly code when SSE 4.1a is available? That seems to be the > prevailing way to do things. > > On second though: according to http://en.wikipedia.org/wiki/SSE4 it > seems that there are three SSE4 flavors: > > * SSE 4.1 > * SSE 4.2 > * SSE 4.1a > > The last one seems to be K10 specific for now, but I would still > recommend to test for SSE 4.1a if your code is that specific. > > <SNIP> > > Cheers, > > Michael > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "mpir-devel" group. To post to this group, send email to mpir-devel@googlegroups.com To unsubscribe from this group, send email to mpir-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/mpir-devel?hl=en -~----------~----~----~----~------~----~------~--~---
