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Topic: ATTN Litecoin GPU Miners - Scrypt support for cgminer - page 4. (Read 175855 times)

member
Activity: 136
Merit: 10
tester
on HD7950 instal driver 12.6
with cgminer 2.6 on windows 7 x64 BTC hashe rate is : ~535MHs
whit cgminer 2.6 on XUBUBTU 12.4 x64 BTC hashe rate is : ~499MHs

windows beat up linux in my case whit 40MHs on BTC digging

with cgminer 2.6 on windows 7 x64 LTC hashe rate is : ~250kHs
whit cgminer 2.6 on XUBUBTU 12.4 x64 LTC hashe rate is : ~300kHs

with 12.6 is a little better,
but is not so good compare 6950 on LTC do ~405kH/s
legendary
Activity: 976
Merit: 1003
on HD7950
with cgminer 2.6 on windows 7 x64 BTC hashe rate is : ~535MHs
whit cgminer 2.6 on XUBUBTU 12.4 x46 BTC hashe rate is : ~495MHs

windows beat up linux in my case whit 40MHs on BTC digging

with cgminer 2.6 on windows 7 x64 LTC hashe rate is : ~250kHs 
whit cgminer 2.6 on XUBUBTU 12.4 x46 LTC hashe rate is : ~254kHs


try with driver 12.6
member
Activity: 136
Merit: 10
tester
on HD7950
with cgminer 2.6 on windows 7 x64 BTC hashe rate is : ~535MHs
whit cgminer 2.6 on XUBUBTU 12.4 x46 BTC hashe rate is : ~495MHs

windows beat up linux in my case whit 40MHs on BTC digging

with cgminer 2.6 on windows 7 x64 LTC hashe rate is : ~250kHs  
whit cgminer 2.6 on XUBUBTU 12.4 x46 LTC hashe rate is : ~254kHs

no so big difference for LTC

edit:
considering that result i think windows is better decision in my case
edit:
this is with 12.4 driver
legendary
Activity: 976
Merit: 1003
also try
export GPU_USE_SYNC_OBJECTS=1
with ALLOC in script which runs cgminer

cd cgminer
rm *.bin
export DISPLAY=:0
export GPU_USE_SYNC_OBJECTS=1
export GPU_MAX_ALLOC_PERCENT=100
./cgminer ................

yes
member
Activity: 136
Merit: 10
tester
also try
export GPU_USE_SYNC_OBJECTS=1
with ALLOC in script which runs cgminer

cd cgminer
rm *.bin
export DISPLAY=:0
export GPU_USE_SYNC_OBJECTS=1
export GPU_MAX_ALLOC_PERCENT=100
./cgminer ................
legendary
Activity: 976
Merit: 1003
Did you run
export GPU_MAX_ALLOC_PERCENT=100
before running cgminer under Ubuntu?
What are you stock clock rates? Maybe try experimenting there a little with engine and memory clocks upwards and downwards, the hash rates can vary quite a bit depending on the ratio of engine to memory

export GPU_MAX_ALLOC_PERCENT=100 - YES I RUN IT

GPU : 1045Mhz (default : 900MHz)
RAM : 1450MHz (default : 1250MHz)

also try
export GPU_USE_SYNC_OBJECTS=1
with ALLOC in script which runs cgminer
member
Activity: 136
Merit: 10
tester

Use cgminer and these settings
--scrypt -I 19 --shaders 1792 --thread-concurrency 8960 -g 1
Should get 500+ kh/s
also try --thread-concurrency of 17920, may be a little faster
for the 7xxx series you must always use -g 1 to achieve high intensities

a lot of reject A:6 R:85 ~600kH/s

i try a low intensity 15 result :  A:30 R:73 ~370kH/s

still no good result
member
Activity: 136
Merit: 10
tester
Did you run
export GPU_MAX_ALLOC_PERCENT=100
before running cgminer under Ubuntu?
What are you stock clock rates? Maybe try experimenting there a little with engine and memory clocks upwards and downwards, the hash rates can vary quite a bit depending on the ratio of engine to memory

export GPU_MAX_ALLOC_PERCENT=100 - YES I RUN IT

GPU : 1045Mhz (default : 900MHz)
RAM : 1450MHz (default : 1250MHz)
sr. member
Activity: 266
Merit: 250
LitecoinTalk
did you forget
Code:
export GPU_MAX_ALLOC_PERCENT=100 && ./cgminer --scrypt -o h....

see SCRYPT-README

you not read my post .....
windows 7 x64
Driver 12.6
SDK 2.7

you have not readed either, some cards can not go over -I 13 !
full member
Activity: 204
Merit: 100
ckolivas,
now i run xubuntu 12.4
cgminer 2.6 with this settings :

--scrypt -I 14 --shaders 1792 -g 1

it run normal , if i increase intensity start rejecting,
but a hash rate i think is little be low >260kH/s

Did you run
export GPU_MAX_ALLOC_PERCENT=100
before running cgminer under Ubuntu?

What are you stock clock rates? Maybe try experimenting there a little with engine and memory clocks upwards and downwards, the hash rates can vary quite a bit depending on the ratio of engine to memory
member
Activity: 136
Merit: 10
tester
ckolivas,
now i run xubuntu 12.4
cgminer 2.6 with this settings :

--scrypt -I 14 --shaders 1792 -g 1

it run normal , if i increase intensity start rejecting,
but a hash rate i think is little be low >260kH/s

edit:
come one mining linux guru how to increase hashe rate ?
hero member
Activity: 914
Merit: 500
Ah fuck a problem of scale. Hashrate will look too low making it think it's sick for scrypt only. I'll fix it tomorrow.

Thank you sir for looking into this issue and your effort to date! Smiley
-ck
legendary
Activity: 4088
Merit: 1631
Ruu \o/
The latest cgminer 2.6.0 reports the gpus SICK after about a minute or two of mining but appears to hash away just fine and submit shares successfully this is on windows 7 and Ubuntu-12.04
Ah fuck a problem of scale. Hashrate will look too low making it think it's sick for scrypt only. I'll fix it tomorrow.
full member
Activity: 204
Merit: 100
The latest cgminer 2.6.0 reports the gpus SICK after about a minute or two of mining but appears to hash away just fine and submit shares successfully this is on windows 7 and Ubuntu-12.04
member
Activity: 136
Merit: 10
tester
did you forget
Code:
export GPU_MAX_ALLOC_PERCENT=100 && ./cgminer --scrypt -o h....

see SCRYPT-README

you not read my post .....
windows 7 x64
Driver 12.6
SDK 2.7
legendary
Activity: 910
Merit: 1000
Quality Printing Services by Federal Reserve Bank
If any of you run 6950, those settings seem to work fine:
Code:
./cgminer --scrypt -o http://xxxxx:9332 -u USER -p PASS --worksize 256 --lookup-gap 2 --thread-concurrency 7040 -g 1 --intensity 19
I get (avg):403.4 Kh/s
I have not fraked with any aticonfig setting.
If you find better options, please post them here.
Cheers and happy LTC mining

i try to run HD7950 , but only a half of HD6950 hashe rate , or cgminer crash , look past 2.3 pages

did you forget
Code:
export GPU_MAX_ALLOC_PERCENT=100 && ./cgminer --scrypt -o h....


see SCRYPT-README
member
Activity: 136
Merit: 10
tester
If any of you run 6950, those settings seem to work fine:
Code:
./cgminer --scrypt -o http://xxxxx:9332 -u USER -p PASS --worksize 256 --lookup-gap 2 --thread-concurrency 7040 -g 1 --intensity 19
I get (avg):403.4 Kh/s
I have not fraked with any aticonfig setting.
If you find better options, please post them here.
Cheers and happy LTC mining

i try to run HD7950 , but only a half of HD6950 hashe rate , or cgminer crash , look past 2.3 pages
legendary
Activity: 910
Merit: 1000
Quality Printing Services by Federal Reserve Bank
If any of you run 6950, those settings seem to work fine:

Code:
./cgminer --scrypt -o http://xxxxx:9332 -u USER -p PASS --worksize 256 --lookup-gap 2 --thread-concurrency 7040 -g 1 --intensity 19
I get (avg):403.4 Kh/s

I have not fraked with any aticonfig setting.
If you find better options, please post them here.

Cheers and happy LTC mining
member
Activity: 136
Merit: 10
tester
great new release cgminer 2.6 , but the same problems  Embarrassed ...
now I'm starting to think about does it make sense to buy one more HD7950 eventually, unable to work only one to digging LTC.
will take more RAM for the system tomorrow to see if it has an effect.

meanwhile I saw manual somewhere for ubuntu and cgminer, but I can not find it now
hero member
Activity: 914
Merit: 500
Deserving of a bump to get this above the drama-rama! Smiley
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