Any advice on x64 vs x86 with the new version?

EDIT: With a 670 GTX and the same settings as before, I bumped from 160ish khash to 190 khash. Awesome work, cbuchner! Also, thanks to David Anderson!

Settings: -i 1 -l K90x2 -C 1 -H 1 -m 1

https://github.com/CFSworks/nvml_fix

fixed this for me. I had to install gcc 4.4 to compile this hack.

Christian

You should really autotune again. The x2 is probably inefficient. Also the -C (texture cache) argument is currently ignored with David's new kernels. I will try to integrate this feature again if it brings an additional speed benefit.

Fermi has been loved enough.

Yeah, it was just a quick check before I went into a repeated autotune frenzy.

Speaking of which, there's some really good news on that front. With K42x5, I'm now at a whopping 230khash, still on interactive mode! Incredible job here!

Side question, do you have a Bitcoin addy? I don't mine LTC.

EDIT: 28x8 is at 235khash. Still have a few more to check out, but this is probably where I'm going to top out.

EDIT2: The oddball 14x24 is just a hair faster at 236.

I'm noticing this too. There's slightly less stutter on video (had Pawn Stars on this whole time while testing configs). Not the very slight nearly constant stutter I've always seen, but the larger occasional stutters seem to be gone.

Sitting at around 178kH on autotune with the new version with my GTX 660, compared to 140 with optimised settings on the previous version and around 125 with autotune on the previous version. Going to put in the previous settings and see if it makes a noticeable difference.

Edit: Sitting around 196kH with optimised settings, so it's approximately a 40% jump in output compared to the previous version. Very pleased with the performance.

would you share your kernel launch configuration there? Mine currently only does 247 kHash/s.

Christian

Peaked out at 643 KH/s!!!!!!

You and Dave are the freakin BOMB! Now I have to really fine tune my overclock since this actually uses 100% of my TDP, and temps are about 10 deg higher.

Previous version I was maxing out at 433 kh/s with 112x2. Now with this version, autotuning used K14x4 for GPU1 and K14x14 for GPU2. Set it to -l K14x14 for both and I'm getting 643 kh/s from 2 EVGA 670 FTWs!

-H 1 -i 0 -C 1 -m 1 -l K14x14

Mines the same performance wise, although running hotter the same as yours. Major improvement on an 670 I tried on though, best previous was 230ish, now it's at 330-350! With above mentioned 14x14 conf, can't remember the previous one.