[ANN][GRS][DMD][DGB] Pallas optimized groestl opencl kernels

[pallas]

What coins can be extracted with your algorithm?

the ones using the groestlcoin algo (groestl + groestl): for example diamond, aidbit and atheistcoin.
not myriad groestl like saffroncoin and digibyte.

[1714145553]

1714145553

[1714145553]

1714145553

[St.Neman]

4gpu 280x = 69Mhs = about 7000AID x 0.00000086 = 0.00602 BTC/daily

(power consumption 870W/h)

0,00602BTC = 2,35$/daily
electricity = 1,12$/daily

2,35$ - 1,12$ = 1,23$/daily

[pallas]

4gpu 280x = 69Mhs = about 7000AID x 0.00000086 = 0.00602 BTC/daily

(power consumption 870W/h)

0,00602BTC = 2,35$/daily
electricity = 1,12$/daily

2,35$ - 1,12$ = 1,23$/daily

That's good! You pay very little for your electricity...
I pay a lot more so it's no longer profitable for me for a long time now.

[utahjohn]

Interesting observation 280x, I had to raise GPU vdc in bios to get stable above 18.4MHs (now 1.118v) ... (was stable at 1.087v using previous kernel).  Best for me 1160gpu/1500mem threads 1, TC 24576 (it does make a difference).  Temps rise dramatically with minor increase in voltage sadly and have capped my overclock attempts as over 75c is enough for me  I have been unable to lower mem clock it seems to be locked (powercolor R9 280x).  Cooler ambient temps coming but will not gain all that much as temps seem to rise exponentially with overclocking (nice heater LOL).
Congrats on profitibility St.Neman I am barely profitable with increased power requirement but the 1 DMD reward window will end soon enough ... take advantage while you can.  Got new (used) Mobo on the way and will soon get main miner back online (only 1 280x atm in entertainment box right now main miner mobo died in a puff of smoke LOL).
You should be able to push 73+ Mhs with 4 cards ... (volt mod and proper heatsink paste application).

[utahjohn]

@pallas
have you looked into incorporating super optimized groestl into the X11mod kernel on my thread (in sig)?

[pallas]

Interesting observation 280x, I had to raise GPU vdc in bios to get stable above 18.4MHs (now 1.118v) ... (was stable at 1.087v using previous kernel).  Best for me 1160gpu/1500mem threads 1, TC 24576 (it does make a difference).  Temps rise dramatically with minor increase in voltage sadly and have capped my overclock attempts as over 75c is enough for me  I have been unable to lower mem clock it seems to be locked (powercolor R9 280x).  Cooler ambient temps coming but will not gain all that much as temps seem to rise exponentially with overclocking (nice heater LOL).
Congrats on profitibility St.Neman I am barely profitable with increased power requirement but the 1 DMD reward window will end soon enough ... take advantage while you can.  Got new (used) Mobo on the way and will soon get main miner back online (only 1 280x atm in entertainment box right now main miner mobo died in a puff of smoke LOL).
You should be able to push 73+ Mhs with 4 cards ... (volt mod and proper heatsink paste application).

It's a pity you can't reduce mem clock because it would save you watts and lower the card temperature (and also let you overclock the core more).
I think the 280x has a maximum core/ram clock range like the 7950: I used to set it at 1150 core and 1000 ram.
If the hashrate changes with thread concurrency, it's probably just compiler variance and not due to the TC buffer which is not used at all. Try removing the bins and restart a handful of times, you'll probably see different hashrates with the exact same settings.

[utahjohn]

Researching inability to lower mem clock, I use VBE7.0.0.7b.exe and atiwinflash to do the volt mod on 280x and 7950.  
Going to try force mem clock in bios ... I get worried about flashing card so many times but it's worth a try ...

[utahjohn]

OK that worked I was able to lower mem clock to 500, trying further OC now ...

Temp dropped from 76-77C to 72C with current settings (1170 GPU 500 MEM) 18.5MHs after 10 min ... will probably lower memclk to 150 like on OP

Lowered memclk to 150 by bios mod and gpu to 1.112V

Temp 71C after 25 min at 1171/150 18.48Mhs I'm happy with that and will leave it alone for a week to see if stable

Display driver crash after 30 min, lowering clock by 1 ...

NOTE: VBios modding is not for the faint of heart, this would likely destroy gaming performance, use only on dedicated mining box

Question for more experienced miners ... what would I=22 be as xIntensity on r9 280x? (2048 shaders)

[pallas]

mmmm ... wonderful odor, I am steam curing a pound of virginia tobacco in oven for my own version of dark molasses cavendish ... nice rich smooth smoke and it's getting really dark after 8 hr sample.

I'm wondering what it has to do with this thread.
Still, thanks for the bump ;-)

[utahjohn]

I'm getting query from another user on my thread on status of x11mod ... any progress?

[utahjohn]

I've found it is needed to keep GPU temp below 72C with the powercolor R9 280x, GPU clock gets throttled down >= 72C ...

[pallas]

I've found it is needed to keep GPU temp below 72C with the powercolor R9 280x, GPU clock gets throttled down >= 72C ...

72C looks pretty low to me... my 290s throttles at 95 and 85.

[utahjohn]

I've found it is needed to keep GPU temp below 72C with the powercolor R9 280x, GPU clock gets throttled down >= 72C ...

72C looks pretty low to me... my 290s throttles at 95 and 85.

Not a real concern for me with groestl (running under 72C) but running X11 it is an issue when I OC to 1080/1650.

Might have something to do with fan profiles in vbios ... have not messed with that yet.

Just checked status on my ebay order of replacement motherboard for mining box (MOBO/RAM/CPU - Asrock H81 PRO BTC/G3220 3GHZ/4GB 1600 DDR3) and it has reached post office here in SLC should get delivered tomorrow or next day then I can bring more cards online again ~

R9 280x stable at 18.47 Mhs temp 71C (1170/150) after 15+ hours

[St.Neman]

Interesting observation 280x, I had to raise GPU vdc in bios to get stable above 18.4MHs (now 1.118v) ... (was stable at 1.087v using previous kernel).  Best for me 1160gpu/1500mem threads 1, TC 24576 (it does make a difference).  Temps rise dramatically with minor increase in voltage sadly and have capped my overclock attempts as over 75c is enough for me  I have been unable to lower mem clock it seems to be locked (powercolor R9 280x).  Cooler ambient temps coming but will not gain all that much as temps seem to rise exponentially with overclocking (nice heater LOL).
Congrats on profitibility St.Neman I am barely profitable with increased power requirement but the 1 DMD reward window will end soon enough ... take advantage while you can.  Got new (used) Mobo on the way and will soon get main miner back online (only 1 280x atm in entertainment box right now main miner mobo died in a puff of smoke LOL).
You should be able to push 73+ Mhs with 4 cards ... (volt mod and proper heatsink paste application).

thanks utahjohn,
gpu1090, mem1000, i22, 1,169V (temp 70C fan 2000-2500)
can't get more, i try but can't
i have worst gpus 280x http://www.sapphiretech.com/presentation/product/product_index.aspx?pid=2022&lid=1,
new gpus after a few months simply stop working,
then i must to change every capacitor on gpu
if i want to work again

[utahjohn]

Interesting observation 280x, I had to raise GPU vdc in bios to get stable above 18.4MHs (now 1.118v) ... (was stable at 1.087v using previous kernel).  Best for me 1160gpu/1500mem threads 1, TC 24576 (it does make a difference).  Temps rise dramatically with minor increase in voltage sadly and have capped my overclock attempts as over 75c is enough for me  I have been unable to lower mem clock it seems to be locked (powercolor R9 280x).  Cooler ambient temps coming but will not gain all that much as temps seem to rise exponentially with overclocking (nice heater LOL).
Congrats on profitibility St.Neman I am barely profitable with increased power requirement but the 1 DMD reward window will end soon enough ... take advantage while you can.  Got new (used) Mobo on the way and will soon get main miner back online (only 1 280x atm in entertainment box right now main miner mobo died in a puff of smoke LOL).
You should be able to push 73+ Mhs with 4 cards ... (volt mod and proper heatsink paste application).

thanks utahjohn,
gpu1090, mem1000, i22, 1,169V (temp 70C fan 2000-2500)
can't get more, i try but can't
i have worst gpus 280x http://www.sapphiretech.com/presentation/product/product_index.aspx?pid=2022&lid=1,
new gpus after a few months simply stop working,
then i must to change every capacitor on gpu
if i want to work again

Are you tuning each card individually (there is great varience between GPU quality on each card), try to tune them one by one in your config. 
Smoked capacitors is your power unstable or PS faulty, I have never had a blown capacitor.

[St.Neman]

Interesting observation 280x, I had to raise GPU vdc in bios to get stable above 18.4MHs (now 1.118v) ... (was stable at 1.087v using previous kernel).  Best for me 1160gpu/1500mem threads 1, TC 24576 (it does make a difference).  Temps rise dramatically with minor increase in voltage sadly and have capped my overclock attempts as over 75c is enough for me  I have been unable to lower mem clock it seems to be locked (powercolor R9 280x).  Cooler ambient temps coming but will not gain all that much as temps seem to rise exponentially with overclocking (nice heater LOL).
Congrats on profitibility St.Neman I am barely profitable with increased power requirement but the 1 DMD reward window will end soon enough ... take advantage while you can.  Got new (used) Mobo on the way and will soon get main miner back online (only 1 280x atm in entertainment box right now main miner mobo died in a puff of smoke LOL).
You should be able to push 73+ Mhs with 4 cards ... (volt mod and proper heatsink paste application).

thanks utahjohn,
gpu1090, mem1000, i22, 1,169V (temp 70C fan 2000-2500)
can't get more, i try but can't
i have worst gpus 280x http://www.sapphiretech.com/presentation/product/product_index.aspx?pid=2022&lid=1,
new gpus after a few months simply stop working,
then i must to change every capacitor on gpu
if i want to work again

Are you tuning each card individually (there is great varience between GPU quality on each card), try to tune them one by one in your config. 
Smoked capacitors is your power unstable or PS faulty, I have never had a blown capacitor.

my equipment and power is absolutely ok, another's gpu's working perfectly, bad chinese capacitors is my only and big problem

[utahjohn]

@st.neman
Tried installing catalyst 14.9 and it totally borked hashrate using super kernel. 
Stick with catalyst 14.7 RC3

[pallas]

@st.neman
Tried installing catalyst 14.9 and it totally borked hashrate using super kernel. 
Stick with catalyst 14.7 RC3

I've experienced the hashrate drop on the new drivers too. I'll look into it: there might need to be two versions of the kernel.
You can still use the new drivers but the old bin files, it should work.

[utahjohn]

@st.neman
Tried installing catalyst 14.9 and it totally borked hashrate using super kernel. 
Stick with catalyst 14.7 RC3

I've experienced the hashrate drop on the new drivers too. I'll look into it: there might need to be two versions of the kernel.
You can still use the new drivers but the old bin files, it should work.

Didn't try old bin, but I reverted to 14.7RC3 (used DDU) and no problem

[pallas]

I suggest everybody keep "good binaries": make a backup of the fastest .bin files you have, so you can recover them in case of driver problems.
Also this will enable you to get 1 o 2 percent more hashrate because of compiler variance (try removing the bin and running 3/4 times to see the variance in action).
Or use the provided bin file (see the OP) which should be a good one.