The big VTC Vertcoin settings thread

[pkjames]

i can confirm lowering the core indeed give some 20 to 30 odd KHZ per card (for me), and adding the --shaders xxxx option gives a few more!

https://lh6.googleusercontent.com/-Qol4_sjSK1s/UvzOaA5mabI/AAAAAAAAGmE/Z1FEBv28qzE/w715-h434-no/vert2.jpg

TC: 8192
shaders: 2048
I 13
G 2
Core/Mem: 1030/1500

again plz igonre the GPU 1 (iGPU)

[huskyxx]

whats an igpu, is that integrated?

[SnakeEater]

Guys, i need your help! i have got 3 machines and none of them can run intesnity above 12! i get tons of HW.

At first i thought that it was a  RAM problem, then i have added 4 more gigs for a total of 8 gigs, but it didnt help!

I have 280x,7950 and r9 290. None of them can run intensity above 12 with out HW.

I have tried adding setx commands etc.
Lowering Core, memory. Does not help.
Im using vertminer 0.5.3 also tried 0.5.2

Any ideas?



i would really love to mine this coin, but with intensity  12, i get around 200khs on each card

TC less than 8192?

[SnakeEater]

I get about 443 KH running with the Sapphire R9 290X reference card. Just have these extra options in my bat file

-I 20 -g 1

Any Reject or HW error @ -I 20 43 KH?

[kristofabc]

With 7950 i'm getting now about 260khash, but I get accepted shares: 75900 ; rejected 64, hw errors 331

Is this ratio normal? For some reason i'm getting hw errors at intensity 13, if i lower to intensity 12, errors stop but the hash rate falls by 100khash

[lucazane]

With 7950 i'm getting now about 260khash, but I get accepted shares: 75900 ; rejected 64, hw errors 331

Is this ratio normal? For some reason i'm getting hw errors at intensity 13, if i lower to intensity 12, errors stop but the hash rate falls by 100khash

you may try to lower the thread concurrency

[kristofabc]

Yeah I tried that, doesn't do much good. Do you think I'd do better if I switch from windows 7 64bit to ubuntu ?

[lucazane]

Yeah I tried that, doesn't do much good. Do you think I'd do better if I switch from windows 7 64bit to ubuntu ?

I don't think so

I have the same card, this is my setting/result :
setx GPU_MAX_ALLOC_PERCENT 100 (in the .bat)

you can see 0 HW

It can always be a hardward issue, some card are just not good

[roundrobin]

cant set both shaders and threads.  if you set the tc it ignores the shaders.  if you set only the shaders without the tc if will auto calculate what the tc should be.  

--thread-concurrency:
This tunes the optimal size of work that scrypt can do. It is internally tuned
by cgminer to be the highest reasonable multiple of shaders that it can
allocate on your GPU. Ideally it should be a multiple of your shader count.
vliw5 architecture (R5XXX) would be best at 5x shaders, while VLIW4 (R6xxx and
R7xxx) are best at 4x. Setting thread concurrency overrides anything you put
into --shaders and is ultimately a BETTER way to tune performance.
SUMMARY: Spend lots of time finding the highest value that your device likes
and increases hashrate.

It's an ambiguous misphrasing. When you set --shaders cgminer will automatically derive a thread concurrency value from that number but you can specify your shader count and following that override the auto-derived TC by setting your own value. If I set 256 shaders I get the same performance as setting 256 shaders and 1024 TC but a different performance if I set 256 shader and 512 TC, and if I only set TC 1024 I get a different performance as well, and different still if I set 128 shaders and/or 1024/512 TC.

[huskyxx]

For anyone who cant get over 8192 thread concurrency this is what finally fixed it for me.

Source: gaywallets post here:
https://litecointalk.org/index.php?topic=6842.105

What he said:
For anyone who encounters this same issue with setx gpu_max_alloc_percent 100 not working...

You can check the registry edit in HKEY_CURRENT_USER\ENVIRONMENT... if the DWORD value there is not in ALL CAPS, you must delete it. Then re-open command prompt and send the command again, but with ALL CAPS. It would appear that the AMD APP SDK does not recognize it unless it is in all caps, even though the registry won't overwrite if you re-pass with all caps. You must delete the old key first. Fun stuff.

I'll play with threadcount and get back to this thread later with my heat results. Quick googling shows for about $50 you can pick up a GELID ICY REV 2 and drop temps even when max OC down to 70-80, even in a case. I'll have to test the stability at high temps with a single gpu thread and a high threadcount for stability before aftermarket modifications (even if I have to run the fan at 90 or something ridiculously loud)... with multiple threads it seems to get a lot of HW NONCE errors (which from what I gather is basically shared memory getting overwritten by the other cores, causing invalid submissions).

[elixir]

could someone please help. this is my command for normal scrypt.

u xxx.xxx -p xxx  --worksize 256 --lookup-gap 2 --thread-concurrency 8192 -g 2 --intensity 12 -Q 0

i have a vtx3d 7870 le tahiti and i get 345khash/s.

could some please tell me how to change it for vertcoin. thanks.

[themike5000]

could someone please help. this is my command for normal scrypt.

u xxx.xxx -p xxx  --worksize 256 --lookup-gap 2 --thread-concurrency 8192 -g 2 --intensity 12 -Q 0

i have a vtx3d 7870 le tahiti and i get 345khash/s.

could some please tell me how to change it for vertcoin. thanks.

cgminer.exe --scrypt u xxx.xxx -p xxx -v 1 -w 256 -I 12 -g 2 --thread-concurrency 4000

Should get 170 kh now.

[elixir]

could someone please help. this is my command for normal scrypt.

u xxx.xxx -p xxx  --worksize 256 --lookup-gap 2 --thread-concurrency 8192 -g 2 --intensity 12 -Q 0

i have a vtx3d 7870 le tahiti and i get 345khash/s.

could some please tell me how to change it for vertcoin. thanks.

cgminer.exe --scrypt u xxx.xxx -p xxx -v 1 -w 256 -I 12 -g 2 --thread-concurrency 4000

Should get 170 kh now.

thanks 

[elixir]

could someone please help. this is my command for normal scrypt.

u xxx.xxx -p xxx  --worksize 256 --lookup-gap 2 --thread-concurrency 8192 -g 2 --intensity 12 -Q 0

i have a vtx3d 7870 le tahiti and i get 345khash/s.

could some please tell me how to change it for vertcoin. thanks.

cgminer.exe --scrypt u xxx.xxx -p xxx -v 1 -w 256 -I 12 -g 2 --thread-concurrency 4000

Should get 170 kh now.

just tried that but it doesnt seem to make a difference. what ever i put as a command i can only get 130khash/s. 

[marimax]

hellooooo you all  

I ve got 250 ks from each XFX 7950  (500 total) has anyone been able to do better? I ve got 4gb memory and running 2 of those cards in the same rig, do you guys think i should use more Gb of ram for the effect?

Im using vert cgminer.

  Wanted a bit more ash from these cards,  

[elixir]

could someone please help. this is my command for normal scrypt.

u xxx.xxx -p xxx  --worksize 256 --lookup-gap 2 --thread-concurrency 8192 -g 2 --intensity 12 -Q 0

i have a vtx3d 7870 le tahiti and i get 345khash/s.

could some please tell me how to change it for vertcoin. thanks.

cgminer.exe --scrypt u xxx.xxx -p xxx -v 1 -w 256 -I 12 -g 2 --thread-concurrency 4000

Should get 170 kh now.

just tried that but it doesnt seem to make a difference. what ever i put as a command i can only get 130khash/s. 

tell a lie, i deleted the .conf from the miner and it went to 170. thanks

[kristofabc]

hellooooo you all  

I ve got 250 ks from each XFX 7950  (500 total) has anyone been able to do better? I ve got 4gb memory and running 2 of those cards in the same rig, do you guys think i should use more Gb of ram for the effect?

Im using vert cgminer.

  Wanted a bit more ash from these cards,  

I've got the same setup, but only one 7950  getting 260khash. I get best value with --shaders 1792 -I 13 --g 2 --w 256
Next thing is overclocking, my voltage is 1.1v, gpu 950 (slower speed actually improved khash, go figure.. ), memory 1350
These settings actually give me very bad khash hashing other scrypt like dogecoin (about 360, should be more)

Ordered new ddr2, will get the in two weeks and report.

[marimax]

hellooooo you all  

I ve got 250 ks from each XFX 7950  (500 total) has anyone been able to do better? I ve got 4gb memory and running 2 of those cards in the same rig, do you guys think i should use more Gb of ram for the effect?

Im using vert cgminer.

  Wanted a bit more ash from these cards,  

I've got the same setup, but only one 7950  getting 260khash. I get best value with --shaders 1792 -I 13 --g 2 --w 256
Next thing is overclocking, my voltage is 1.1v, gpu 950 (slower speed actually improved khash, go figure.. ), memory 1350
These settings actually give me very bad khash hashing other scrypt like dogecoin (about 360, should be more)

Ordered new ddr2, will get the in two weeks and report.

thanks for replying, i will try to work the code a bit more and see. As soon my other cards arrive will try my best and will let you all know. Im building 2 rigs and will use MSI and Saphire. Im excited!

[rnaodm]

Hi trying to figure out why im only getting 35khash, when it starts its at 131khash but only for a second, I believe its because the miner is setting my gpu engine clock at min - 300mhz, but I have setx gpu_max_alloc_percent 100 in the bat, and made sure its all caps in the registry.

Thanks

*Edit I did a simple reboot, and thought that fixed the problem as I was up around 150khash for about 5 seconds then it plummeted back down to 35, Heres my current bat settings

Radeon r7 260x

setx gpu_max_alloc_percent 100
vertminer.exe -o stratum+tcp://panda.suprnova.cc:3333 -u x -p x -v 1 -w 256 -I 13 -g 1 --thread-concurrency 4096

[JohnnyDaMitch]

I mined away happily for 24 hours yesterday on my 6x R9 280x rig with TC@8192, core@1030, mem@1500, -g2, lookup gap 2... giving 370Kh/s per card. 5 HW Errors after 24 hours was acceptable. But this morning I woke up to a DEAD card, and I couldn't even restart the miner, it would just hang.

I'd lower the mem clock to 1450 and see if it stops dying, then work on optimizing the other factors from there. Some cards are just not as strong. I have one that doesn't quite get to 1500.