|
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
|
|
|
|
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 ................ |
|
|
|
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 |
|
|
|
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 ITGPU : 1045Mhz (default : 900MHz) RAM : 1450MHz (default : 1250MHz) |
|
|
|
|
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 ?
|
|
|
|
did you forget 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 |
|
|
|
If any of you run 6950, those settings seem to work fine: ./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 |
|
|
|
great new release cgminer 2.6 , but the same problems  ... 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 |
|
|
|
I came to the result start from:
--scrypt --worksize 64 --lookup-gap 2 -g 1 --thread-concurrency {number of shaders by card} --intensity 10
and increase "worksize" and multiplying number of shaders in different variants
Edit: may be you have problem with system
Edit 2: try to reinstall (delete and install new) drivers (from amd.com)
--scrypt --worksize 64 --lookup-gap 2 -g 1 --thread-concurrency 1792 --intensity 10 - work = ~60kH/s with increasing --thread-concurrency = Error -5: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel) only whit --thread-concurrency 1792 work but poor with increasing over --intensity : on intensity 11 - Accepted 100% at 135kH/s on intensity 12 - Accepted / Rejected = 50/50 at ~270kH/s (target-miss) on intensity 19 - Rejected 100% at ~490kH/s (target-miss) with increasing worksize to 256 with intensity 11, thread-concurrency 1792 lookup-gap 2 Accepted / Rejected = 75 / 25 at 135kH/s (target-miss) |
|
|
|
--scrypt -g 1 --thread-concurrency 896
Then try lookup gaps of 1,2,3,4 on top
...but I think you're screwed. Mine bitcoin or get more system ram.
how much total ram do you suggest |
|
|
|
only --lookup-gap 2
and -g 1
crash = Error -5: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel) |
|
|
|
Try this
--scrypt --worksize 256 --lookup-gap 2 --thread-concurrency 8192 -g 1 --intensity 16
--scrypt --worksize 256 --lookup-gap 2 --thread-concurrency 16364 -g 1 --intensity 16 (if buffer permit)
Result I don't promise
--scrypt --worksize 256 --lookup-gap 2 --thread-concurrency 8192 -g 1 --intensity 16 - crash = Error -5: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel) --scrypt --worksize 256 --lookup-gap 2 --thread-concurrency 16364 -g 1 --intensity 16 (if buffer permit) - crash = Error -61: clCreateBuffer (padbuffer8), decrease CT or increase LG |
|
|
|
This could well be a limiting factor because it needs both system and gpu ram... Maybe try concurrency of 1792 but increase lookup gap from the default of 2.
--scrypt --shaders 1792 -g 1 --thread-concurrency 1792 and : --lookup-gap 2 - work = 4.0Kh/s --lookup-gap 3 - crash = Error -5: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel) --lookup-gap 4 - crash = Error -5: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel) --lookup-gap 5 - crash = Error -5: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel) --lookup-gap 6 - crash = Error -5: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel) --lookup-gap 7 - crash = Error -5: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel) |
|
|
|
I have this error (in linux)
Resolved by "export GPU_USE_SYNC_OBJECTS"
how to do it in windows I don't know
windows 7 x64 gpu driver 12.6 sdk 2.7 |
|
|
|
|
--thread-concurrency 1792 - work = 4.0Kh/s
--thread-concurrency 3584 - crash = Error -5: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel)
--thread-concurrency 5376 - crash = Error -5: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel)
|
|
|
|
Everything looks in order there, but it's still failing. How much system ram do you have? Try forcing smaller multiples of 1792 for thread concurrency. Eg --thread-concurrency 1792 , then 3584, then 5376.
system RAM : 1GB ( free >512MB sfter system load ) |
|
|
|
Come on guys, if not you no one can't help, give ideas |
|
|
|
Ok its a stupid question but I havent seen it asked. You are shutting down BTC when testing for LTC right?
of course, also restart PC when i change digging currency. |
|
|
|
something is very wrong, lookup_gap 2 should work fine. might want to try uninstalling 12.6 drivers and reinstalling them, and also uninstalling app sdk 2.6 and installing 2.7. other than that i do not know, something is broken.
exactly the same result crash, crash, crash, crash, crash, crash, crash ... but BTC digging well ~ 530MH/s |
|
|
|
|
Show Posts
