My GTX 260 loved S27x3 the most. Got 44kHash. The other kernels would achieve 10kHash less or so.

According to pure shader count (216) it should be beating your 9800 cards by nearly factor 2. I should have tested with Aero off, but that information came too late I cannot really test now, as I have ripped the cards out already, and I am waiting for a 560Ti 448 core edition to go into the last available slot (out of 4).

Here's my GPU park - all in the same desktop PC. Can only use 2 out of the 3 high power cards simultaneously.
GTX 560Ti (EVGA)
GTX 460
GTX 560Ti 448core edition (Palit)
GTX 640 4GB (Club3D)

and in some other PCs:
GTX 660Ti (EVGA)
GTX 640 4GB (Club3D)
9600M GT (in a Laptop)

already end of life'd (anyone want 'em?)
4 9600GSO cards
1 8800GT
2 GTX 260

total hashing power would be in the 700 kHash range I guess.

Christian

I think with -C 1 you need to watch out that you don't throw too large work units at the device. -l 320x2 is really large. 1D textures have a size limit, and if that is exceeded I think I do print a warning on the console - but the programm will continue (and some hashes may fail silently). Autotune will automatically make sure not to exceed the texture size limit.

about those texture size limits. If I remember correctly
-C 1 has a size limit of 511 for regular kernels (block x warps). e.g. 320x2 results in 640 and that is too big
-C 1 has a size limit of 255 for "S" kernels.

Hash rate went up about 5 KH for both cards. -C 1 or C 2 both show the 5 KH increase.

Here's what I am getting with an NVidia 570 with the 4/17 version compared to 4/13:

C0, a boost of about 3-4 kH (from 218 to 221/222)
C1, a boost of about 13 (from 218 to 231)
C2, crashes the display driver and fails to validate on CPU

An NVidia 670 I also have running went from 141 to 149 with C1 and this version (vs 4/13).

I'll stick with C1 and THANKS!!!  

This version + C1 covers my pool costs and then some... Hats off to you and I just sent you a token 0.1 LTC for all your hard work (and this version, specifically). I hope everyone else using your program donates at least that much to you to reimburse you for your effort.

Yep, exactly what I tried: Same settings for C1 as C2, both gotten from an original autotune with C0. Maybe I should try re-autotuning with C1 to see what happens. Let me do that...

Update:

Retest results for 670 card:

C1:

  Attempt 1. Did an autotune, it crashed the driver.
  Attempt 2. Autotune succeeded and tuned to the usual (i.e., the ones I get from C0) settings of 30x8, so those seem to be good settings regardless of the C switch

C2:
  
  Attempt 1: Surprisingly, no crash this time, also tuned to the usual C0 settings of 30x8 and getting same peak performance as C1 (about 231-232).

So, in the end C2==C1 if it doesn't crash the driver on startup.

I think I am going to revert back to C1 for now as my normal operating mode with a fixed -l 30x8, until you grace us with the next iteration of your wonderful mods.

Michael

P.S. A special thanks in this version for making Ctrl-C Ctrl-Break work properly. It used to have about an 80% chance of crashing the display driver with prior versions of your app.

P.P.S An amusing unrelated note: I've got an old AMD 5450 also running cgminer 2.11.4 and generating 15 kH/s, but using only 20 (additional) watts to do it according to my kilowatt meter. My gains from this version change alone (i.e., 4/13 -> 4/17) are more than that AMD card is producing .

I'm using -C 1 -i 0

I should mention that I am using -i 1, because there's only one card in this host and I need to use it for other things. In any case, I am ever hopeful that whatever -C tweaks you make going forward to increase your rate won't hamper ours (so perhaps some backwards compatibility on the -C front just in case?).

Yeah, the number looked a little high for just one or two SEs ;-) Did you run these in a triple-SLI configuration, or why do you have three of em?

Christian

I have 2 gtx560se and 1 gt430.  I got 1 560se for free (I asked for a 560 but they weren't that computer literate so whatever lol ) and figured I may as well sli it with another for $120 (still not sure why...other than I always thought it would be cool to have sli.  I'm not a big gamer).  The 430 was a leftover from an htpc build.

The 560se I must say I'm impressed with.  It overclocks like a dream.  Stock clocks are 776/1915mem/1552shader.  I have it running at 971core/2121mem/1938shader at 1.062v.  Stock cooling.  Never gets above 80c when cranking away mining.

It is probably safe to over clock to 822. My card is standard at 822 mhz factory OC