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Title: LTC mining with Reaper on a 7970 Post by: exahash on March 15, 2012, 07:15:55 PM Anyone else tried this? What are your litecoin.conf settings? Especially if you have a 7970. I'm under Win7 using the newest 64-bit reaper from the wiki. http://wiki.solidcoin.info/wiki/Reaper
I'm getting about 236 kh/s at stock clocks and voltage, and Afterburner shows the GPU at 96% usage with the following settings in litecoin.conf: worksize 256 aggression 12 threads_per_gpu 4 sharethreads 18 lookup_gap 2 gpu_thread_concurrency 6144 If I increase the aggression above 12 I get lots of stales/invalids and the message "Weird response from server" I'm wondering what the last three settings do (sharethreads, lookup_gap, gpu_thread_concurrency). I noticed that gpu_thread_concurrency is 3x my 2048 stream processors and tried other multiples of 2048 but that didn't help. I also tried different values for lookup_gap but none were any better. If I reduce threads_per_gpu below 3, performance drops into the high 220's and gpu usage in afterburner drops to low 90's I'd also like to know how this is performing on 5850's and 5970's, since I have a bunch more of those. Title: Re: LTC mining with Reaper on a 7970 Post by: Ahimoth on March 15, 2012, 07:33:25 PM I think I can answer the gpu_thread_concurrency number. This should be set to [shaders per gpu] multiplied by the [shader "threads" supported].
Examples: A 6950 has 1408 shaders, and each shader can queue 4 threads, so the optimal number for this card is 5632. A 6990 has 1536 shaders, and each shader can queue 4 threads, so the optimal number for this card is 6144. I think the 5xxx cards were 5 threads queued per shader, so there it would be 5 times the shader count. I do not know how many "threads" each shader on a 7 series can queue. Title: Re: LTC mining with Reaper on a 7970 Post by: Tittiez on March 15, 2012, 08:08:19 PM Funny, I get higher kH/s on my 6850 with 6144 then I do its optimal number (3840).
Title: Re: LTC mining with Reaper on a 7970 Post by: Ahimoth on March 15, 2012, 09:39:51 PM Well, that's just what I've been told. And I only have 6950's to test on.
However, that said I believe 6850 is VLIW5, so might want to try 5 x 960 = 4800 Title: Re: LTC mining with Reaper on a 7970 Post by: Rubberduckie on March 15, 2012, 10:22:05 PM Am I right in thinking a 6870 has 1120 shaders,4 threads so 4480?
Title: Re: LTC mining with Reaper on a 7970 Post by: Ahimoth on March 15, 2012, 11:13:34 PM All 68xx series cards are still vliw5 to my knowledge, which I think means they have a queue of 5 threads per shader. So a 6870 would be 5 * 1120 = 5600
Title: Re: LTC mining with Reaper on a 7970 Post by: Tittiez on March 15, 2012, 11:29:45 PM Am I right in thinking a 6870 has 1120 shaders,4 threads so 4480? Yeah, the 6850 has 960 shaders according to AMDs site. So 960 * 5 = 4800 I get exactly 250kh/s at aggression 17. With it at 6144 I get 259kh/s with aggression 17 and 250kh/s with aggression 16. Title: Re: LTC mining with Reaper on a 7970 Post by: ShadowAlexey on March 16, 2012, 08:32:52 AM You might be missing fact that it has 68**/58** series has simd wich perform 5 operation,thats how we get 1120/1600,of the actual count of processors is 224 for 6870 and 320 for 5870, so i cant find any connection to gpu_thread_concurrency...
According to OpenCL File this is size of x,the amount of main threads which would be the amount of threads we run i think... Title: Re: LTC mining with Reaper on a 7970 Post by: Rubberduckie on March 18, 2012, 08:28:27 AM All 68xx series cards are still vliw5 to my knowledge, which I think means they have a queue of 5 threads per shader. So a 6870 would be 5 * 1120 = 5600 just saw your post thx! (stopped mining LTC for a day or so) Title: Re: LTC mining with Reaper on a 7970 Post by: Aseras on July 18, 2012, 11:45:05 PM Drop threads per gpu to one overclocking the memory. Litecoin is dependent on high memory speed unlike bitcoin.
Title: Re: LTC mining with Reaper on a 7970 Post by: Aseras on July 19, 2012, 07:52:13 PM right. play with it and see what happens. The highest you can get the memory the better. the core helps too, but memory speed is more important.
on a 6990 having the ram at 800mhz vs 1250mhz is the difference between 200khash and 800khash Title: Re: LTC mining with Reaper on a 7970 Post by: Aseras on July 19, 2012, 08:44:28 PM right. play with it and see what happens. The highest you can get the memory the better. the core helps too, but memory speed is more important. on a 6990 having the ram at 800mhz vs 1250mhz is the difference between 200khash and 800khash Duh play with it. There are just a lot of options to mess with compared to btc mining and very little info I can find. Thanks ok delete the bin files between runs. worksize try 128 or 256 mine for a couple of minutes and see what gets the best rate. aggression 12-19 Lower if you want to use the box for anything and background mine or if stales are too high. Higher for dedicated. beyond 19 isnt good. threads per gpu, try them all 1, 2 and 4. mine for a couple of minutes and see what gets the best rate. sharethreads, lookupgap leave alone. concurrency, start at 8192 and go up. try multiples of 1024 and again mine for a couple of minutes and see what gets the best rate in half an hour you'll answer your own question. Title: Re: LTC mining with Reaper on a 7970 Post by: Aseras on July 19, 2012, 08:57:03 PM I have 2 7970 on order I'll tell you next week.
All I have right now are 5970 and 6990 for those worksize 256 aggression 16 threads_per_gpu 1 sharethreads 18 lookup_gap 2 gpu_thread_concurrency 8192 works best and again FAST memory, unlike bitcoin. Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on July 20, 2012, 06:28:28 PM these settings get 600kh/s+, which is the estimated kh/s rate for one of these cards by their memory bandwidth:
worksize 256 aggression 13 threads_per_gpu 5 sharethreads 18 lookup_gap 2 gpu_thread_concurrency 10240 you need the latest sdk and 12.6+ ati drivers (tried with 12.6 and it works well, not sure about 12.7 but those are probably okay too) Title: Re: LTC mining with Reaper on a 7970 Post by: iCEBREAKER on July 20, 2012, 08:05:18 PM So I read through this thread, then looked at btc-e's LTC/BTC and LTC/$ pages. But the coffee isn't working.
My head gets all spinny when I try to figure out whether to mine LTC on my 7970, or keep mining BTC and exchange them for LTC. Can somebody please math this for me? Has anyone made a LTC vs BTC profitability calculator? I'll start a bounty for one. +1BTC Title: Re: LTC mining with Reaper on a 7970 Post by: pooler on July 20, 2012, 08:15:58 PM Has anyone made a LTC vs BTC profitability calculator? I'll start a bounty for one. It already exists. http://allchains.info/calc.html Title: Re: LTC mining with Reaper on a 7970 Post by: iCEBREAKER on July 20, 2012, 08:22:51 PM Has anyone made a LTC vs BTC profitability calculator? I'll start a bounty for one. It already exists. http://allchains.info/calc.html Oh goody, thanks!!! ;D Title: Re: LTC mining with Reaper on a 7970 Post by: mig91 on August 10, 2012, 12:17:11 AM i have allways 100% usage on cpu. how i can fix that? ???
Title: Re: LTC mining with Reaper on a 7970 Post by: goxed on August 10, 2012, 02:59:11 AM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optionTitle: Re: LTC mining with Reaper on a 7970 Post by: mig91 on August 10, 2012, 08:24:50 AM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optioni fixed the cpu problem in reaper. i have 2x 6950 and im thinking which miner i should use? cgminer or reaper? what is that "--scrypt option" in cgminer? thanks for helping a noob :) Title: Re: LTC mining with Reaper on a 7970 Post by: muqali on August 10, 2012, 10:41:16 AM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optionTitle: Re: LTC mining with Reaper on a 7970 Post by: Vorksholk on August 10, 2012, 02:20:54 PM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optionDid you set your shader count? Title: Re: LTC mining with Reaper on a 7970 Post by: Vorksholk on August 10, 2012, 02:24:12 PM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optioni fixed the cpu problem in reaper. i have 2x 6950 and im thinking which miner i should use? cgminer or reaper? what is that "--scrypt option" in cgminer? thanks for helping a noob :) Try using cgminer, it's more stable. The --scrypt option in cgminer is to tell it you want to mine litecoins instead of bitcoins. You also have to specify the shader count of your card. If you have trouble getting cgminer working, post your config and we can help you, or you can use cgEasy. :) Title: Re: LTC mining with Reaper on a 7970 Post by: muqali on August 10, 2012, 05:26:12 PM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optionDid you set your shader count? Title: Re: LTC mining with Reaper on a 7970 Post by: Vorksholk on August 10, 2012, 06:52:06 PM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optionDid you set your shader count? What intensity were you using? Title: Re: LTC mining with Reaper on a 7970 Post by: muqali on August 10, 2012, 06:53:21 PM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optionDid you set your shader count? What intensity were you using? Title: Re: LTC mining with Reaper on a 7970 Post by: Vorksholk on August 10, 2012, 07:02:53 PM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optionDid you set your shader count? What intensity were you using? Try intensity 18. :) Title: Re: LTC mining with Reaper on a 7970 Post by: Greedi on August 10, 2012, 07:21:25 PM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optionDid you set your shader count? What intensity were you using? Try intensity 18. :) a 7970 can't go above 12 :) Title: Re: LTC mining with Reaper on a 7970 Post by: muqali on August 10, 2012, 07:23:16 PM I put 18, the kh went up to around 400, but I had Q:38 A:8
Title: Re: LTC mining with Reaper on a 7970 Post by: Greedi on August 10, 2012, 07:24:45 PM I put 18, the kh went up to around 400, but I had Q:38 A:8 if you go above 12, its will just be stalen :) you have to tweak it pretty much, i got ~700 kh/s out of my bro's 7970 :) with -I 12, but with som good tweaks Title: Re: LTC mining with Reaper on a 7970 Post by: Vorksholk on August 10, 2012, 07:37:48 PM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optionDid you set your shader count? What intensity were you using? Try intensity 18. :) a 7970 can't go above 12 :) Ahh, thought that was only with reaper :( Title: Re: LTC mining with Reaper on a 7970 Post by: Greedi on August 10, 2012, 07:41:49 PM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optionTitle: Re: LTC mining with Reaper on a 7970 Post by: Vorksholk on August 10, 2012, 07:42:53 PM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optionTitle: Re: LTC mining with Reaper on a 7970 Post by: Greedi on August 10, 2012, 07:48:43 PM i have allways 100% usage on cpu. how i can fix that? ??? Use latest cgminer 2.6.1 and run with --scrypt optionTitle: Re: LTC mining with Reaper on a 7970 Post by: muqali on August 10, 2012, 07:49:26 PM I put 18, the kh went up to around 400, but I had Q:38 A:8 if you go above 12, its will just be stalen :) you have to tweak it pretty much, i got ~700 kh/s out of my bro's 7970 :) with -I 12, but with som good tweaks Share the tweaks, for the good of the cryptocurrency of course. Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on September 10, 2012, 01:39:49 AM I put 18, the kh went up to around 400, but I had Q:38 A:8 if you go above 12, its will just be stalen :) you have to tweak it pretty much, i got ~700 kh/s out of my bro's 7970 :) with -I 12, but with som good tweaks Share the tweaks, for the good of the cryptocurrency of course. Reaper config: Code: host ltcmine.ru Should be able to get 700+ kh/s. I have a 7950 running this right now and I'm getting 550 kh/s. Title: Re: LTC mining with Reaper on a 7970 Post by: Tomatocage on September 22, 2012, 05:15:58 PM these settings get 600kh/s+, which is the estimated kh/s rate for one of these cards by their memory bandwidth: Any time I go above 8192 I get an error saying the buffer is too large or some shit. How are you guys getting gpu_thread_concurrency above that?worksize 256 aggression 13 threads_per_gpu 5 sharethreads 18 lookup_gap 2 gpu_thread_concurrency 10240 you need the latest sdk and 12.6+ ati drivers (tried with 12.6 and it works well, not sure about 12.7 but those are probably okay too) Title: Re: LTC mining with Reaper on a 7970 Post by: Greedi on September 22, 2012, 05:25:55 PM Use cgminer peeps?
set --shader and go after that instead, that was what i started with on DiCE1904 7970, and he is now getting +700 kh/s on his Title: Re: LTC mining with Reaper on a 7970 Post by: meebs on September 23, 2012, 03:20:39 AM Use cgminer peeps? set --shader and go after that instead, that was what i started with on DiCE1904 7970, and he is now getting +700 kh/s on his Any other suggestions on settings other then that? CG miner always tends to perform (for me) about 10-15% lower then reaper can get. I have tried both the --shader and --thread-concurrency routes. Title: Re: LTC mining with Reaper on a 7970 Post by: Liquid on September 23, 2012, 03:27:03 AM I find reaper to be the best doin 760Kh/s on my 5970 ;)
protocol litecoin worksize 256 aggression 16 threads_per_gpu 1 sharethreads 10 lookup_gap 2 gpu_thread_concurrency 5632 Title: Re: LTC mining with Reaper on a 7970 Post by: philips on September 23, 2012, 08:06:33 AM Reaper reports higher hashrate compared with cgminer but keep this in mind:
Quote Now finally, and you can believe me or not on this, but raper sends work to the GPU WITHOUT CHECKING if it was accepted, and gets the return buffer WITHOUT CHECKING if it actually did any work, and then adds the number of hashes it would have expected the GPU to do with that work sent to it. This means that when you start with lots of threads, some of them may not even be doing anything. Or if you've set some borderline invalid values, it will appear to be working fine, report back a big hashrate, but generate less valid shares. So I implore you to check the share rate generation and pretty much ignore the reported hashrate when comparing notes. Remember that cgminer AND raper use virtually identical kernels so should hash at virtually identical rates. https://bitcointalk.org/index.php?topic=92887.msg1048114;topicseen#msg1048114 Best bet would be to squeeze (properly) as much performance as you can from both apps, mine with both for few hours and compare share rates as they are reported by the pool. Title: Re: LTC mining with Reaper on a 7970 Post by: live627 on September 25, 2012, 06:18:58 AM I find reaper to be the best doin 760Kh/s on my 5970 ;) zclock speeds?protocol litecoin worksize 256 aggression 16 threads_per_gpu 1 sharethreads 10 lookup_gap 2 gpu_thread_concurrency 5632 Title: Re: LTC mining with Reaper on a 7970 Post by: Liquid on September 25, 2012, 02:18:27 PM 800Mhz
Title: Re: LTC mining with Reaper on a 7970 Post by: Greedi on September 25, 2012, 02:21:48 PM cgminer is the best, and can give more then reaper, its have been proven :)
Just need to configure right :) Title: Re: LTC mining with Reaper on a 7970 Post by: Liquid on September 25, 2012, 02:36:37 PM I use it for BTC and PPC but i cannot get LTC to work it keeps saying rejected ???
Title: Re: LTC mining with Reaper on a 7970 Post by: Greedi on September 25, 2012, 02:37:36 PM I use it for BTC and PPC but i cannot get LTC to work it keeps saying rejected ??? what is you're cgminer conf? Title: Re: LTC mining with Reaper on a 7970 Post by: Liquid on September 25, 2012, 02:44:11 PM well i dont have to configure for BTC & LTC and i get the best hashrate and best results without lag on my system cos i use my computer
but when i try to use a configured bat file for LTC with all the correct settings i get lower hashrate and lag ??? Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on September 25, 2012, 02:50:02 PM cgminer is the best, and can give more then reaper, its have been proven :) Just need to configure right :) using -shaders i get 550kh/s and 99% hardware errors Title: Re: LTC mining with Reaper on a 7970 Post by: Greedi on September 25, 2012, 03:12:28 PM cgminer is the best, and can give more then reaper, its have been proven :) Just need to configure right :) using -shaders i get 550kh/s and 99% hardware errors what card?, and what --shader are you using?, and what else? Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on September 25, 2012, 03:27:11 PM cgminer is the best, and can give more then reaper, its have been proven :) Just need to configure right :) using -shaders i get 550kh/s and 99% hardware errors what card?, and what --shader are you using?, and what else? 7950, --shader 1792 -w 256 -v 1 -g 1 Title: Re: LTC mining with Reaper on a 7970 Post by: Greedi on September 25, 2012, 03:50:55 PM cgminer is the best, and can give more then reaper, its have been proven :) Just need to configure right :) using -shaders i get 550kh/s and 99% hardware errors what card?, and what --shader are you using?, and what else? 7950, --shader 1792 -w 256 -v 1 -g 1 in what O/C ? if you'r doing that also, you don't need -w and -v Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on September 25, 2012, 04:30:44 PM in what O/C ? if you'r doing that also, you don't need -w and -v 1GHz core / 1450mhz RAM if i don't set flags i lose performance cgminer is setting the thread concurrency with --shader to ~8192, which is too small. cgminer has a bug where it can't use thread concurrencies over 8192 (gives a memory size error). in order to achieve max hashing rates for a 7xxx series card you need to set the concurrency to 64 * (memory bus size in bits). in the meantime i'm getting 550kh/s in reaper and finding blocks Title: Re: LTC mining with Reaper on a 7970 Post by: live627 on September 26, 2012, 07:06:42 AM 800Mhz May I also know the memory clock?Title: Re: LTC mining with Reaper on a 7970 Post by: Liquid on September 26, 2012, 09:03:40 AM 1000Mhz
Title: Re: LTC mining with Reaper on a 7970 Post by: Tomatocage on September 26, 2012, 09:57:49 PM 1GHz core / 1450mhz RAM if i don't set flags i lose performance cgminer is setting the thread concurrency with --shader to ~8192, which is too small. cgminer has a bug where it can't use thread concurrencies over 8192 (gives a memory size error). in order to achieve max hashing rates for a 7xxx series card you need to set the concurrency to 64 * (memory bus size in bits). in the meantime i'm getting 550kh/s in reaper and finding blocks Interesting. I'm getting the same error in Reaper as well when I go above 8192. Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on September 26, 2012, 10:57:32 PM Interesting. I'm getting the same error in Reaper as well when I go above 8192. Your thread concurrency needs to be a multiple of 64, but otherwise any thread_concurrency within the memory size should work. Title: Re: LTC mining with Reaper on a 7970 Post by: Tomatocage on September 26, 2012, 11:33:01 PM Interesting. I'm getting the same error in Reaper as well when I go above 8192. Your thread concurrency needs to be a multiple of 64, but otherwise any thread_concurrency within the memory size should work. Thanks... but anything I try that yields a buffer size over 512MB doesn't work. My card is supposed to have 3GB too :-/ Title: Re: LTC mining with Reaper on a 7970 Post by: meebs on September 28, 2012, 02:51:18 AM Interesting. I'm getting the same error in Reaper as well when I go above 8192. Your thread concurrency needs to be a multiple of 64, but otherwise any thread_concurrency within the memory size should work. Thanks... but anything I try that yields a buffer size over 512MB doesn't work. My card is supposed to have 3GB too :-/ What is an example of something that didnt work for you? The setup I run on my 7950 uses 1.5gb on each of my cards and 3gb of system ram. Make sure you have lots of system ram ready available. Title: Re: LTC mining with Reaper on a 7970 Post by: Tomatocage on September 28, 2012, 04:37:54 AM Interesting. I'm getting the same error in Reaper as well when I go above 8192. Your thread concurrency needs to be a multiple of 64, but otherwise any thread_concurrency within the memory size should work. Thanks... but anything I try that yields a buffer size over 512MB doesn't work. My card is supposed to have 3GB too :-/ What is an example of something that didnt work for you? The setup I run on my 7950 uses 1.5gb on each of my cards and 3gb of system ram. Make sure you have lots of system ram ready available. worksize 256 vectors 1 aggression 13 threads_per_gpu 4 sharethreads 32 lookup_gap 2 gpu_thread_concurrency 8192 I'm seeing only 2Gb out of 6Gb total system ram being used right now. Anything beyond 8192 for gpu_thread_concurrency yields an error: LTC buffer size: 1024MB. Buffer too big: allocation failed. Either raise 'lookup_gap' or lower 'gpu_thread_concurrency'. Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on September 28, 2012, 05:10:38 AM change thread_per_gpu to 1
Title: Re: LTC mining with Reaper on a 7970 Post by: philips on September 28, 2012, 05:25:54 AM Quote Thanks... but anything I try that yields a buffer size over 512MB doesn't work. My card is supposed to have 3GB too :-/ Have you tried the GPU_MAX_ALLOC_PERCENT variable? Title: Re: LTC mining with Reaper on a 7970 Post by: Tomatocage on September 28, 2012, 06:43:16 AM change thread_per_gpu to 1 I've played around with this setting from 1 to 5, and it doesn't affect my problem at all :(Title: Re: LTC mining with Reaper on a 7970 Post by: Tomatocage on September 28, 2012, 06:43:49 AM Quote Thanks... but anything I try that yields a buffer size over 512MB doesn't work. My card is supposed to have 3GB too :-/ Have you tried the GPU_MAX_ALLOC_PERCENT variable? This sounded promising, but alas it doesn't appear to allow me to go beyond 8192 for the gpu_thread_concurrency Title: Re: LTC mining with Reaper on a 7970 Post by: Tomatocage on September 28, 2012, 06:46:56 AM Anybody with a 7970 getting 650-700 kh/s out of their cards? Could you post your exact litecoin.conf file (minus your miner info, of course)? Also, what is recommended for core/mem clock to hit those numbers? Thanks.
Title: Re: LTC mining with Reaper on a 7970 Post by: superfastkyle on September 29, 2012, 01:28:17 AM only tacotime and he is probably just trolling you. its usually a good sign of lying when people use interjection words like personally, honestly, seriously etc Its using language to "prove" a lie to yourself so you will have an easier time making other people believe it.
Anybody with a 7970 getting 650-700 kh/s out of their cards? Could you post your exact litecoin.conf file (minus your miner info, of course)? Also, what is recommended for core/mem clock to hit those numbers? Thanks. Title: Re: LTC mining with Reaper on a 7970 Post by: meebs on September 29, 2012, 01:51:34 AM only tacotime and he is probably just trolling you. its usually a good sign of lying when people use interjection words like personally, honestly, seriously etc Its using language to "prove" a lie to yourself so you will have an easier time making other people believe it. Anybody with a 7970 getting 650-700 kh/s out of their cards? Could you post your exact litecoin.conf file (minus your miner info, of course)? Also, what is recommended for core/mem clock to hit those numbers? Thanks. Tacotime is responsible for me being able to get 550-590 out of my 7950 using this: PLEASE note that running this setup on a card connected to your monitor WILL make the computer nearly unusable. The screen will literally refresh only once every 2-3 seconds. If it is on a computer you are "remoting" into, it'll be fine. Also, running the monitor on another card or IGP you'll be fine to. Also, reaper will consume 1.5gb of system ram and gpu ram PER card. worksize 256 vectors 1 aggression 20 threads_per_gpu 1 sharethreads 32 lookup_gap 2 gpu_thread_concurrency 24576 Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on September 29, 2012, 05:52:25 AM The memory bus is the same size for the 7970, so use threads = 1 and thread concurrency = 384 * 64 = 24576, aggression 20.
Words like "personally" mean that's what I got, and that your mileage may vary. You can get 700kh/s on a 7950 (http://anonymouse.org/cgi-bin/anon-www.cgi/http://img38.imageshack.us/img38/2250/reaperg.jpg) though, so I'm not sure why anyone would think getting that much from a 7970 would be difficult. Title: Re: LTC mining with Reaper on a 7970 Post by: Tomatocage on September 29, 2012, 04:27:02 PM Tacotime is responsible for me being able to get 550-590 out of my 7950 using this: PLEASE note that running this setup on a card connected to your monitor WILL make the computer nearly unusable. The screen will literally refresh only once every 2-3 seconds. If it is on a computer you are "remoting" into, it'll be fine. Also, running the monitor on another card or IGP you'll be fine to. Also, reaper will consume 1.5gb of system ram and gpu ram PER card. worksize 256 vectors 1 aggression 20 threads_per_gpu 1 sharethreads 32 lookup_gap 2 gpu_thread_concurrency 24576 Hmm, thanks. I still can't get past my inability to use anything beyond 8192 for gpu_thread_concurrency in litecoin.conf. Is there any other file I should be editing? My reaper.conf file looks like this: kernel reaper.cl save_binaries yes enable_graceful_shutdown no long_polling yes device 0 worksize 256 aggression 13 threads_per_gpu 1 sharethreads 32 lookup_gap 2 gpu_thread_concurrency 8192 long_polling yes mine litecoin Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on September 29, 2012, 11:47:01 PM Hmm, thanks. I still can't get past my inability to use anything beyond 8192 for gpu_thread_concurrency in litecoin.conf. Is there any other file I should be editing? My reaper.conf file looks like this: Your reaper.conf should look like: Code: kernel reaper.cl your litecoin.conf should look like: Code: worksize 256 Title: Re: LTC mining with Reaper on a 7970 Post by: meebs on September 30, 2012, 04:15:18 AM also keep in mind that memory clock matters.. core clock does NOT have to be as high as BTC mining formax hash rate.
on my 7950 my LTC hash rate is the same if my core is set to 1000 or 1175. Keep that in mind.. If i drop the core down to 930, then I lose about 2-3% speed. Note that this results in a pretty good power savings over BTC mining as it takes quite a lot less voltage and wattage to run the card at 1000 vs 1175 :) also with the settings above on two cards I am getting a combined speed of 1150 khash. Title: Re: LTC mining with Reaper on a 7970 Post by: btcwalker on October 13, 2012, 10:07:08 PM Something strange are going.
Quote worksize 256 vectors 1 aggression 20 threads_per_gpu 1 sharethreads 32 lookup_gap 2 gpu_thread_concurrency 24576 I got ~600khash\s with that config on 7950 xfx black 1000mhz core \ 1375mhz memory but I got ~360khash\s with that config on 7970 msi lightning 1160mhz core \ 1400mhz memory and the maximum I got from 7970 is ~550khash\s when the following config was used: Quote worksize 256 vectors 1 aggression 13 threads_per_gpu 4 sharethreads 32 lookup_gap 2 gpu_thread_concurrency 8192 May be I am doing something wrong? Why 7970 with greater clocks and hardware power are worse on the same config? Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on October 13, 2012, 11:00:52 PM try these thread concurrencies with aggression 20 and worksize 64, threads_per_gpu 1
16384 17408 18432 19456 20480 21504 22528 23552 24576 25600 26624 27648 28672 29696 30720 31744 32768 33792 34816 at some point on the low end you'll get lots of HW errors and at some point on the high end you'll get a really slow speed. at some point in between you'll find your optimum thread_concurrency. unfortunately no one can tell you what that is, you need to experiment. Title: Re: LTC mining with Reaper on a 7970 Post by: btcwalker on October 14, 2012, 07:32:56 AM The following results have been achieved:
http://imageshack.us/a/img266/5644/7970reapertests.png The best config for 7970 is (565khash\s): Quote worksize 256 vectors 1 aggression 13 threads_per_gpu 1 sharethreads 32 lookup_gap 2 gpu_thread_concurrency 34816 Maybe I will continue experiments to find the better config. But it seems that 7970 is better for BTC mining because it is not hard to get ~700mhash\s Title: Re: LTC mining with Reaper on a 7970 Post by: Badonkadonk on October 14, 2012, 11:45:20 AM was having some issues with my 7950`s when i switched to ltc mining, low speeds and loads of rejected / stale shares.
i solved my problem with going solo minig and changing to cgminer with "cgminer --scrypt -o 127.0.0.1:9332 -u username -p password --shaders 1792 -I 18 -w 256 -v 1 -g 1" clocking my cards at 1000/1775 im getting ~600kh on each but tuned it down to 900/1675 to lower my heat issues and pumping out ~550kh each... you should be able to pump out ~700kh with those settings Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on October 14, 2012, 03:23:22 PM The best config for 7970 is (565khash\s): Quote worksize 256 vectors 1 aggression 13 threads_per_gpu 1 sharethreads 32 lookup_gap 2 gpu_thread_concurrency 34816 Maybe I will continue experiments to find the better config. But it seems that 7970 is better for BTC mining because it is not hard to get ~700mhash\s Maybe a stupid question, but have you tried aggression 16? This is about 30% faster than aggression 13 on my 7770. Title: Re: LTC mining with Reaper on a 7970 Post by: btcwalker on October 14, 2012, 03:33:32 PM Quote Maybe a stupid question, but have you tried aggression 16? This is about 30% faster than aggression 13 on my 7770. yes, I did, and the result is 100% hardware errors reported by reaper. 13 and 20 aggressions are working well only. Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on October 14, 2012, 04:03:45 PM if you can mine at aggression 20 you should be able also to mine at aggression 16. but i guess if that's not the case that's not the case.
you could try, Code: worksize 256 If the thread concurrency is within the correct range and threads_per_gpu set to 1 you should not get stales with high aggressions. But these cards act really weird and it's hard to tell why they do the things they do sometimes. Title: Re: LTC mining with Reaper on a 7970 Post by: btcwalker on October 14, 2012, 04:15:45 PM if you can mine at aggression 20 you should be able also to mine at aggression 16. but i guess if that's not the case that's not the case. you could try, Code: worksize 256 If the thread concurrency is within the correct range and threads_per_gpu set to 1 you should not get stales with high aggressions. But these cards act really weird and it's hard to tell why they do the things they do sometimes. I just retried this agression with config you provided. It seems that previous hardware errors on that agression, I said about before, were because of something different. But this config doesn't provide any benefit for 7970, the result is 370khash\s. Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on October 14, 2012, 09:06:59 PM bump with settings for 760kh/s
http://i.piccy.info/i7/eef9270eec21626fce47de4a5b0bfafe/4-47-398/10015963/760.jpg using catalyst 12.6 and app sdk 2.6 Title: Re: LTC mining with Reaper on a 7970 Post by: DiCE1904 on October 14, 2012, 10:17:26 PM bump with settings for 760kh/s http://i.piccy.info/i7/eef9270eec21626fce47de4a5b0bfafe/4-47-398/10015963/760.jpg using catalyst 12.6 and app sdk 2.6 link isnt working for me Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on October 14, 2012, 10:22:04 PM http://i50.tinypic.com/1j9mw0.jpg
Title: Re: LTC mining with Reaper on a 7970 Post by: btcwalker on October 15, 2012, 08:34:58 AM bump with settings for 760kh/s http://i.piccy.info/i7/eef9270eec21626fce47de4a5b0bfafe/4-47-398/10015963/760.jpg using catalyst 12.6 and app sdk 2.6 I just tried reaper configuration you provided on pic. My system is: OS: Win 7 x64 Drivers\sdk: Catalyst 12.6, sdk 2.6 Card: 7970, 1160mHz core, 1400mHz memory Reaper: reaperv13beta4_64 The only difference I see is memory frequency (1850 instead of my 1400). The result is 385khash\s for 7970 and the weird thing is that my 7950 (1000mhz core \ 1375mhz memory) gives ~600khash\s, so I don't expect that increasing memory frequency will give much influence on the results, but I will try to check it later because it requires overclocking. Title: Re: LTC mining with Reaper on a 7970 Post by: luffy on October 15, 2012, 08:51:41 AM @tacotime,
how much system RAM is occupied for these reaper settings? Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on October 16, 2012, 03:26:21 AM @tacotime, how much system RAM is occupied for these reaper settings? ~1.3 GB I'm in the same boat as you guys, I can not get 700 kh/s out of a 7970. i'll have to experiment when i get more time Title: Re: LTC mining with Reaper on a 7970 Post by: superfastkyle on October 16, 2012, 07:06:17 AM oh wow what did I tell you tacotime can't get 700kh on a 7970 after all. If it was really possible to get an extra 20% from a 7970 why wouldn't a 7970 run much cooler when running at 550kh it does bitcoin mining at the same clock speeds? Surely enough to make up for a little bit of heat caused by extra ram usage. People still don't believe me on calling out bfl's lies but I did pretty good job here.
Title: Re: LTC mining with Reaper on a 7970 Post by: Rjb82 on October 16, 2012, 07:21:07 AM i think my personal best was 1100/1800 on my 7950 with the same settings (except concurrency, mine was 24576, and i run 19 aggression, so i can atleast still move stuff around)... and i THINK i was around 640's. i KNOW i was above 625.
I get 612 out of 1k/1750. 1850 locks up. and 1800 was... not entirely stable... it'd crash the driver after a few random hours. 1750 for days. it's a gigabyte 3 fan card. I forget the model #. For simplicity sake i run 1k/1575 (max CCC lets me do) since i game on it also. Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on October 16, 2012, 03:28:47 PM oh wow what did I tell you tacotime can't get 700kh on a 7970 after all. If it was really possible to get an extra 20% from a 7970 why wouldn't a 7970 run much cooler when running at 550kh it does bitcoin mining at the same clock speeds? Surely enough to make up for a little bit of heat caused by extra ram usage. People still don't believe me on calling out bfl's lies but I did pretty good job here. I was going by what other people told me. I'm sure we'll get some extra kh/s out of it when the kernel gets ironed out. Title: Re: LTC mining with Reaper on a 7970 Post by: superfastkyle on October 16, 2012, 09:55:42 PM Do you remember when I called you out on saying "personally", or did you forget that already. I'm actually starting to enjoy these bitcoin forums, at first I was mad about all the scams/liars here but now I just hope I can use my new found lie detecting skills in more real life situations
oh wow what did I tell you tacotime can't get 700kh on a 7970 after all. If it was really possible to get an extra 20% from a 7970 why wouldn't a 7970 run much cooler when running at 550kh it does bitcoin mining at the same clock speeds? Surely enough to make up for a little bit of heat caused by extra ram usage. People still don't believe me on calling out bfl's lies but I did pretty good job here. I was going by what other people told me. I'm sure we'll get some extra kh/s out of it when the kernel gets ironed out. Title: Re: LTC mining with Reaper on a 7970 Post by: tacotime on October 16, 2012, 10:04:44 PM Do you remember when I called you out on saying "personally", or did you forget that already. I'm actually starting to enjoy these bitcoin forums, at first I was mad about all the scams/liars here but now I just hope I can use my new found lie detecting skills in more real life situations http://media.tumblr.com/tumblr_mb8letOOov1rvhtgq.jpg Title: Re: LTC mining with Reaper on a 7970 Post by: philips on October 17, 2012, 12:05:09 AM @tacotime, how much system RAM is occupied for these reaper settings? ~1.3 GB I'm in the same boat as you guys, I can not get 700 kh/s out of a 7970. i'll have to experiment when i get more time What was the maximum Kh/s you obtained from a 7970 as reported by the pool? I am asking this because in every single test I made with various cards Ati or Nvidia reaper is always reporting significantly higher values than cgminer, while the pool itself reports equal values (in some cases cgminer slightly higher). Reaper just pretends higher values in my experience. The best I could squeeze out of a 7970 was 576 Kh/s (as reported by pool) with cgminer. I will buy some more RAM and try again from scratch. Title: Re: LTC mining with Reaper on a 7970 Post by: superfastkyle on October 19, 2012, 06:35:00 AM your findings are almost identical to mine
The est I could squeeze out of a 7970 was 576 Kh/s (as reported by pool) with cgminer. I will buy some more RAM and try again from scratch. Title: Re: LTC mining with Reaper on a 7970 Post by: Badonkadonk on October 19, 2012, 12:41:20 PM 7950 @~650kh 1175/1775 1150 core voltage. ~80c / cant be to hard to push a 7970 over 800kh can it? :P worksize 256 vectors 1 aggression 20 threads_per_gpu 1 sharethreads 32 lookup_gap 2 gpu_thread_concurrency 24576 Title: Re: LTC mining with Reaper on a 7970 Post by: Aseras on October 19, 2012, 02:37:33 PM I can make my 7970's say they are getting more than 800khash and reaper report 0 hw errors, but they are all rejects. same with cgminer in scrypt. If you push it too hard it just spits out garbage and thinks it's working fine, but you aren't accomplishing anything. The only way to tell is to monitor it from the pool side and watch the rejects.
Title: Re: LTC mining with Reaper on a 7970 Post by: Badonkadonk on October 19, 2012, 04:21:51 PM I can make my 7970's say they are getting more than 800khash and reaper report 0 hw errors, but they are all rejects. same with cgminer in scrypt. If you push it too hard it just spits out garbage and thinks it's working fine, but you aren't accomplishing anything. The only way to tell is to monitor it from the pool side and watch the rejects. pool-x was reporting 637 off that worker ;) 2-3% rejected... but i went back to btc mining... cba pumping and dumping ltc. Title: Re: LTC mining with Reaper on a 7970 Post by: cdog on March 03, 2013, 10:35:59 AM Im trying to decide between an 5970 and a 7970, buying a used card for gaming and LTC mining, putting price aside, which is better?
It seems a lot of people here have issues with their 7970 for LTC, I want a card thats hassle free as I dont want to tweak configs all day... Thanks Title: Re: LTC mining with Reaper on a 7970 Post by: btcwalker on March 03, 2013, 10:56:09 AM Im trying to decide between an 5970 and a 7970, buying a used card for gaming and LTC mining, putting price aside, which is better? Most of 7970 is not efficient in LTC mining, it works like 90% of 7950 in my case (7970 MSI Lightning vs 7950 PowerColor)It seems a lot of people here have issues with their 7970 for LTC, I want a card thats hassle free as I dont want to tweak configs all day... Thanks so if you want to mine LTC, 7970 is not good choice but for BTC and gaming its perfomance is awesome Title: Re: LTC mining with Reaper on a 7970 Post by: BBQKorv on March 03, 2013, 11:25:12 AM I would go for 7970 (GHz?), even the resale value alone is enough encouragement for me. After your done with mining on that card you will have better resale value and that directly adds more on the total profit of your operation.
Title: Re: LTC mining with Reaper on a 7970 Post by: romantic1 on March 03, 2013, 12:35:44 PM Im trying to decide between an 5970 and a 7970, buying a used card for gaming and LTC mining, putting price aside, which is better? 7970 is very good for ltc ! See: https://bitcointalk.org/index.php?topic=148274.0It seems a lot of people here have issues with their 7970 for LTC, I want a card thats hassle free as I dont want to tweak configs all day... Thanks Title: Re: LTC mining with Reaper on a 7970 Post by: btcwalker on March 03, 2013, 12:54:29 PM Im trying to decide between an 5970 and a 7970, buying a used card for gaming and LTC mining, putting price aside, which is better? 7970 is very good for ltc ! See: https://bitcointalk.org/index.php?topic=148274.0It seems a lot of people here have issues with their 7970 for LTC, I want a card thats hassle free as I dont want to tweak configs all day... Thanks I didn't got more than 560 khash\s with 7970 even with 1160 mhz core https://bitcointalk.org/index.php?topic=68950.msg1271092#msg1271092 Title: Re: LTC mining with Reaper on a 7970 Post by: rclljj on April 06, 2013, 07:10:58 AM very usefull
3ks for it Title: Re: LTC mining with Reaper on a 7970 Post by: #Darren on April 06, 2013, 10:13:46 AM Can anyone tell me...
if I rig up 2 7970's on one mother board and "link them", will that be just as effective as having them in separate pc's, or would there be some sort of performance loss? Title: Re: LTC mining with Reaper on a 7970 Post by: W-M on April 06, 2013, 10:23:32 AM Can anyone tell me... I'm not an expert, but I believe they should be equally effective. In fact, it would be even better for you, because you won't have to pay for the extra electricity for the second motherboard/CPU/etc. I'm not really sure if you have to link them using Crossfire or if the script works on both cards separately, but they should be just as effective of having them in different PC's.if I rig up 2 7970's on one mother board and "link them", will that be just as effective as having them in separate pc's, or would there be some sort of performance loss? Title: Re: LTC mining with Reaper on a 7970 Post by: #Darren on April 06, 2013, 10:42:41 AM I'm not really sure if you have to link them using Crossfire or if the script works on both cards separately hmm good point I was sort of figuring that with the cards being linked together the script would just automatically use them both, but I may be wrong... Title: Re: LTC mining with Reaper on a 7970 Post by: Vorksholk on April 06, 2013, 03:51:30 PM You don't have to put the cards in crossfire :)
The only detriment to performance with a multi-GPU system is increased heat. If your computers don't ventilate well (small areas, etc.) then two cards in the same place might just be too much heat and cause some throttling. If you have good (air or water or oil) cooling, you should be good to go. :) Title: Re: LTC mining with Reaper on a 7970 Post by: #Darren on April 06, 2013, 06:51:16 PM You don't have to put the cards in crossfire :) The only detriment to performance with a multi-GPU system is increased heat. If your computers don't ventilate well (small areas, etc.) then two cards in the same place might just be too much heat and cause some throttling. If you have good (air or water or oil) cooling, you should be good to go. :) Nice, thanks :) Can you clarify if I can just keep running reaper with the same configuration when I add the second GPU? Or will I have to make some sort of changes (like running it twice, or changing the concurrency)? Title: Re: LTC mining with Reaper on a 7970 Post by: peacefulmind on April 06, 2013, 06:58:34 PM I have pulled my hair out over the last week over 7970s.
See last post here:https://bitcointalk.org/index.php?topic=117221.520 Taco can you take a look at my problem quoted below? Quote Okay - need some help on this anomaly. First rig - Sapphire 7970 standard edition with Vapor X, used settings suggested in Taco's thread - out of the box 650k/H per second. Second rig - two (2x) Sapphire 7970 "GHZ Editions", used exact same settings in Taco's thread - out of the box - only about 350 k/H per second. I have spent the last week in "newbie purgatory" so have been unable to discuss this issue. Finally on the second rig, I was able to get 500k/H per second/card by putting aggression back to 13, and overclocking the memory to 1680Mhz. Can anyone tell me WHY do two of the same brand/manufacturer, same model, have such huge variance in performance? Why would the two "Ghz editions" VASTLY under-perform the standard one? Does anyone have any suggestions experience with a Sapphire "GHZ Edition" that could explain the variance? The standard one was plug and play @ 650k. The better ones have taken a week of tweaking to even reach 500k/H, and NONE of the recommended settings worked. I know it is not bad cards because they both perform the same - what is different about the "GHZ editions" that is hurting them so much, and made them so finicky? First rig is Q6600 65nm, 4GB DDR2, PCI-E 2.0, Win7 Pro 64, Sapphire 7970 - 650kH/s Second rig is 22nm Quad i5 Ivy Bridge, 8GB DDR3, PCI-E 3.0, Win7 Pro 64, 2 x Sapphire 7970 "GHZ Editions" - 990kH/s (both cards) I followed all instructions in this thread. The second rig would only do about 300 per card until I overclocked the RAM on both cards to 1700Mhz and dialed back aggression to 13. Any variance from that setting and I get LESS than 500kH per card. I would REALLY like to get the potential out of these supposedly "better" Sapphire 7970 Ghz editions. Title: Re: LTC mining with Reaper on a 7970 Post by: Vorksholk on April 06, 2013, 07:59:38 PM You don't have to put the cards in crossfire :) The only detriment to performance with a multi-GPU system is increased heat. If your computers don't ventilate well (small areas, etc.) then two cards in the same place might just be too much heat and cause some throttling. If you have good (air or water or oil) cooling, you should be good to go. :) Nice, thanks :) Can you clarify if I can just keep running reaper with the same configuration when I add the second GPU? Or will I have to make some sort of changes (like running it twice, or changing the concurrency)? Yeah, if you used the device 0 setting you will need to add device 1 as well. That's about it for all of that stuff, since they are the same card they should work with the same threadconc. :) Title: Re: LTC mining with Reaper on a 7970 Post by: #Darren on April 07, 2013, 04:35:21 AM You don't have to put the cards in crossfire :) The only detriment to performance with a multi-GPU system is increased heat. If your computers don't ventilate well (small areas, etc.) then two cards in the same place might just be too much heat and cause some throttling. If you have good (air or water or oil) cooling, you should be good to go. :) Nice, thanks :) Can you clarify if I can just keep running reaper with the same configuration when I add the second GPU? Or will I have to make some sort of changes (like running it twice, or changing the concurrency)? Yeah, if you used the device 0 setting you will need to add device 1 as well. That's about it for all of that stuff, since they are the same card they should work with the same threadconc. :) Thanks again, are you saying the reaper config file should look like this? Quote kernel reaper.cl save_binaries yes enable_graceful_shutdown no long_polling yes device 0 # device 1 mine litecoin |
