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Topic: ATTN Litecoin GPU Miners - Scrypt support for cgminer - page 6. (Read 175818 times)

member
Activity: 136
Merit: 10
tester
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
legendary
Activity: 976
Merit: 1003
--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)

I have this error (in linux)
Resolved by "export GPU_USE_SYNC_OBJECTS=1" and "export GPU_MAX_ALLOC_PERCENT=100"
how to do it in windows I don't know
-ck
legendary
Activity: 4088
Merit: 1631
Ruu \o/
--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)
Clearly your low system ram is screwing you over. Are you setting an intensity with those? --thread-concurrency 1792 will safely take -I 12
legendary
Activity: 976
Merit: 1003
Come on guys, if not you no one can't help, give ideas    Embarrassed

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
member
Activity: 136
Merit: 10
tester
--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)
-ck
legendary
Activity: 4088
Merit: 1631
Ruu \o/
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
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.
member
Activity: 136
Merit: 10
tester
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 )
-ck
legendary
Activity: 4088
Merit: 1631
Ruu \o/
Come on guys, if not you no one can't help, give ideas    Embarrassed
Start it with just your login details and: --shaders 1792 -T -D --verbose -g 1
and see what it reports.

here is log file:
http://www.uploadmb.com/dw.php?id=1343553631
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.
member
Activity: 136
Merit: 10
tester
Come on guys, if not you no one can't help, give ideas    Embarrassed
Start it with just your login details and: --shaders 1792 -T -D --verbose -g 1
and see what it reports.

here is log file:
http://www.uploadmb.com/dw.php?id=1343553631
-ck
legendary
Activity: 4088
Merit: 1631
Ruu \o/
Come on guys, if not you no one can't help, give ideas    Embarrassed
Start it with just your login details and: --shaders 1792 -T -D --verbose -g 1
and see what it reports.
member
Activity: 136
Merit: 10
tester
Come on guys, if not you no one can't help, give ideas    Embarrassed
member
Activity: 136
Merit: 10
tester
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.
newbie
Activity: 46
Merit: 0
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
Ok its a stupid question but I havent seen it asked. You are shutting down BTC when testing for LTC right?
newbie
Activity: 46
Merit: 0
Ok I found my issue, cgminer.conf was conflicting and it overrides the command line settings! So check your config file and make sure things like work size and intensity etc match what youre attempting on the command line. Currently cranking along at 203kh/s on my 5770 w/intensity 18, working on tuning the 6970 still it overheats way to easy and forces the machine to reboot.

I don't see cgminer.conf in the unziped files on windows.
Can point me where i can see cgminer.conf.
Thanks.

If you have one it will be in the same directory as the cgminer.exe most likely. If you dont have one then this isnt whats holding you back.
member
Activity: 136
Merit: 10
tester
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
legendary
Activity: 1484
Merit: 1005
Yeah, that's what I expected...  with reaper and --thread-concurrency of 7168, 8960, or 16000 and number of threads 1 (intensity 19) or 4/5 (intensity 13) should give you at least 400kh/s with a lookup gap of 2 and a worksize of 128 or 256

reaper chrash, chrash, chrash, chrash, chrash, chrash ......

whit :
---------------------------------
worksize 256
aggression 19
threads_per_gpu 1
lookup_gap 5
gpu_thread_concurrency 7168
---------------------------------
run normal but < 250kH/s

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.
member
Activity: 136
Merit: 10
tester
Yeah, that's what I expected...  with reaper and --thread-concurrency of 7168, 8960, or 16000 and number of threads 1 (intensity 19) or 4/5 (intensity 13) should give you at least 400kh/s with a lookup gap of 2 and a worksize of 128 or 256

reaper chrash, chrash, chrash, chrash, chrash, chrash ......

whit :
---------------------------------
worksize 256
aggression 19
threads_per_gpu 1
lookup_gap 5
gpu_thread_concurrency 7168
---------------------------------
run normal but < 250kH/s
member
Activity: 136
Merit: 10
tester
I'm starting to think something is wrong with your cgminer build though, these should not give 0 memory values

i use windows build "ckolivas-cgminer-43752ee" i think is newest at the moment
legendary
Activity: 1484
Merit: 1005
try --shaders 2048 and --thread-concurrency 10240
I'm starting to think something is wrong with your cgminer build though, these should not give 0 memory values

--------------------------------------------------------------------------------
 [2012-07-28 22:57:09] Started cgminer 2.5.0
 [2012-07-28 22:57:09] Probing for an alive pool
 [2012-07-28 22:57:10] Long-polling activated for http://ltc.xurious.com:9332/LP
 [2012-07-28 22:57:23] LONGPOLL from pool 0 detected new block
 [2012-07-28 22:57:33] Pool 0 http://ltc.xurious.com:9332 alive
 [2012-07-28 22:57:33] Error -5: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel)
 [2012-07-28 22:57:33] GPU 0 failure, disabling!
 [2012-07-28 22:57:33] Thread 0 being disabled
--------------------------------------------------------------------------------

Yeah, that's what I expected...  with reaper and --thread-concurrency of 7168, 8960, or 16000 and number of threads 1 (intensity 19) or 4/5 (intensity 13) should give you at least 400kh/s with a lookup gap of 2 and a worksize of 128 or 256
legendary
Activity: 1855
Merit: 1016
Ok I found my issue, cgminer.conf was conflicting and it overrides the command line settings! So check your config file and make sure things like work size and intensity etc match what youre attempting on the command line. Currently cranking along at 203kh/s on my 5770 w/intensity 18, working on tuning the 6970 still it overheats way to easy and forces the machine to reboot.

I don't see cgminer.conf in the unziped files on windows.
Can point me where i can see cgminer.conf.
Thanks.
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