There is a way in Ubuntu. It may be similar in Debian. However, I've forgotten what the command is and I think you need sudo powers.
Bill. On 23 July 2011 16:32, Jason <ja...@njkfrudils.plus.com> wrote: > On Saturday 23 July 2011 15:42:08 Jason wrote: >> On Saturday 23 July 2011 14:18:09 Jason wrote: >> > On Friday 22 July 2011 23:11:29 Jason wrote: >> > > On Friday 22 July 2011 17:39:55 Jason wrote: >> > > > On Friday 22 July 2011 12:36:21 Jason wrote: >> > > > > On Friday 22 July 2011 12:25:42 Bill Hart wrote: >> > > > > > That's fantastic! Thanks for all your hard work on these Jason. >> > > > > > >> > > > > > Bill. >> > > > > > >> > > > > > On 22 July 2011 11:13, jason <ja...@njkfrudils.plus.com> wrote: >> > > > > > > Hi >> > > > > > > >> > > > > > > New assembler for the nehalem mpn_addadd mpn_addsub mpn_subadd >> > > > > > > , used to run at 3.5c/l now at 3.0c/l therefore optimal. I'll >> > > > > > > check out how they run on the other intel chips. >> > > > > >> > > > > it's also an improvement on core2/penryn and nearly optimal , >> > > > > probably just needs a shuffle. Sandybridge doesn't benefit though. >> > > > > >> > > > > > > Note mpn_subadd really should be called mpn_subsub , I'll >> > > > > > > change it later. >> > > > > > > >> > > > > > > Jason >> > > > > > > >> > > > > > > -- >> > > > > > > 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. >> > > > >> > > > I tried to do a mpn_addaddadd ie x=y+z+u+v but on Intel chips the >> > > > scheduler cant really cope with it , also with 5 pointer you get so >> > > > many L1 data cache bank conflicts that the code runs at different >> > > > speeds for the relative differences between the pointers mod 64 . But >> > > > if we are many using it for toom then we could perhaps guarantee the >> > > > relative differences. On the AMD chips I have a strange problem with >> > > > my optimizer where it reports silly numbers for some functions ie >> > > > sumdiff addadd , no idea why it's happening , I even reverted to an >> > > > earier svn version where I found the original fast addadd code , but >> > > > it still gave silly figures , but karaadd was fine ? >> > > > >> > > > Jason >> > > >> > > New mpn_sumdiff for the nehalem , didn't have before so we can say it >> > > would of run at 4.0c/w but now is 3.6c/w (lost a lttle bit with the >> > > feedin) , this code also benefits the core2 but not penryn or >> > > sandybridge , probably just another trivial shuffle needed :) >> > > >> > > Jason >> > >> > I've shuffled the sumdiff for the core2 it's a bit faster at 3.5c/w >> > >> > Jason >> >> I've shuffled the sumdiff again for penryn and it runs at 3.7c/w >> >> and for netburst/atom I'll just choose the fastest from what we already >> have (just before release) , the only one left to do is westmere on the >> gcc farm , I dont know how loaded it is , so I might not be able to make >> any meaningful comparisons. >> >> Jason > > Well gcc20 (westmere) is very lightly loaded at the moment but it has Mhz > throttling to save power and turbo boost ,which means I can't use it for > timings. Have to find a software way to temporary turn these off , on my > machines (nehalem,sandybridge,bobcat) I just turned it off in the bios. > > Jason > > -- > 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. > > -- 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.
