philips
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September 23, 2012, 08:06:33 AM Last edit: September 23, 2012, 08:52:02 AM by philips |
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Reaper reports higher hashrate compared with cgminer but keep this in mind: 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#msg1048114Best 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.
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live627
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September 25, 2012, 06:18:58 AM |
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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 zclock speeds?
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Liquid
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September 25, 2012, 02:18:27 PM |
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800Mhz
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Bitcoin will show the world what hard money really is.
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Greedi
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September 25, 2012, 02:21:48 PM |
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cgminer is the best, and can give more then reaper, its have been proven Just need to configure right
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Liquid
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September 25, 2012, 02:36:37 PM |
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I use it for BTC and PPC but i cannot get LTC to work it keeps saying rejected
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Bitcoin will show the world what hard money really is.
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Greedi
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September 25, 2012, 02:37:36 PM |
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I use it for BTC and PPC but i cannot get LTC to work it keeps saying rejected what is you're cgminer conf?
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Liquid
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September 25, 2012, 02:44:11 PM |
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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
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Bitcoin will show the world what hard money really is.
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tacotime
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September 25, 2012, 02:50:02 PM |
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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
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XMR: 44GBHzv6ZyQdJkjqZje6KLZ3xSyN1hBSFAnLP6EAqJtCRVzMzZmeXTC2AHKDS9aEDTRKmo6a6o9r9j86pYfhCWDkKjbtcns
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Greedi
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September 25, 2012, 03:12:28 PM |
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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?
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tacotime
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September 25, 2012, 03:27:11 PM |
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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
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XMR: 44GBHzv6ZyQdJkjqZje6KLZ3xSyN1hBSFAnLP6EAqJtCRVzMzZmeXTC2AHKDS9aEDTRKmo6a6o9r9j86pYfhCWDkKjbtcns
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Greedi
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September 25, 2012, 03:50:55 PM |
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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
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tacotime
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September 25, 2012, 04:30:44 PM |
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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
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XMR: 44GBHzv6ZyQdJkjqZje6KLZ3xSyN1hBSFAnLP6EAqJtCRVzMzZmeXTC2AHKDS9aEDTRKmo6a6o9r9j86pYfhCWDkKjbtcns
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live627
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September 26, 2012, 07:06:42 AM |
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800Mhz
May I also know the memory clock?
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Liquid
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September 26, 2012, 09:03:40 AM |
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1000Mhz
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Bitcoin will show the world what hard money really is.
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Tomatocage
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brb keeping up with the Kardashians
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September 26, 2012, 09:57:49 PM |
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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.
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tacotime
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September 26, 2012, 10:57:32 PM |
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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.
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XMR: 44GBHzv6ZyQdJkjqZje6KLZ3xSyN1hBSFAnLP6EAqJtCRVzMzZmeXTC2AHKDS9aEDTRKmo6a6o9r9j86pYfhCWDkKjbtcns
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Tomatocage
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brb keeping up with the Kardashians
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September 26, 2012, 11:33:01 PM |
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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 :-/
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meebs
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September 28, 2012, 02:51:18 AM |
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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.
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Tomatocage
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brb keeping up with the Kardashians
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September 28, 2012, 04:37:54 AM |
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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'.
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tacotime
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September 28, 2012, 05:10:38 AM |
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change thread_per_gpu to 1
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XMR: 44GBHzv6ZyQdJkjqZje6KLZ3xSyN1hBSFAnLP6EAqJtCRVzMzZmeXTC2AHKDS9aEDTRKmo6a6o9r9j86pYfhCWDkKjbtcns
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