pekv2
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July 23, 2012, 11:34:47 PM |
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802 Khash/s. Two 5850's. cgminer --scrypt -o http://server -u username -p password --worksize 256 --lookup-gap 2 --thread-concurrency 5600 -g 1 --intensity 18
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Fphotos-4.dropbox.com%2Fsi%2F2048x1536%2FDmKYsU4nPjXlNaorGYsZ7A1kgCUjqTsVQG-4OxSqYbM%2F89462606%2F1343174400%2F845b33b%2FUntitled.jpg&t=665&c=z0QPhZAi9waYBw) Image link broken. On 5850s you should try a multiple of 1440. So try 7200. Same results. Image link should work. But here is main. https://www.dropbox.com/s/b2hrkwrz688a5ta/Untitled.jpg
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-ck
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July 23, 2012, 11:37:07 PM |
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Okay I've thought about it some more and I think the best way forwards is to do away with the --lookup-gap and --thread-concurrency options and just get the user to input the shader count of their device and let cgminer choose. This will always set lookup gap to 2 and set the thread concurrency to the highest it can be that is a multiple of the shader count which would be much easier for users to configure. This then leaves you with the choice of gpu threads and intensity still. Otherwise there is far too much to configure, and most people won't be able to figure out how to do it. I plan to include a readme with the shader count of the various hardware like in that earlier post. What do people think of this?
Eg for a 6850 and 5770: cgminer --shaders 960,800
Could you set those as the defaults and have the options to change them via command line or in the .conf file. Which? The shader value or the tc or the lg or some combination? I can always leave the tc and lg values configurable but all that does is lead to MORE BUG REPORTS AND CONFUSION since the shader multiple and lg2 are best. So perhaps hidden options...
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Developer/maintainer for cgminer, ckpool/ckproxy, and the -ck kernel 2% Fee Solo mining at solo.ckpool.org -ck
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ElectricMucus
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July 24, 2012, 05:29:56 AM |
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There seems to be a problem with pools on higher share difficulty. cgminer reports the hashrate fine but what gets recognized by the pool is not. Neither invalids or stales are detected they seem just to disappear in a black hole. ![Huh](https://bitcointalk.org/Smileys/default/huh.gif) I can't tell if I am the only one having this problem or if it is just cgminer - reaper doesn't really work for me, it always tries to use my cpu as well.
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-ck
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July 24, 2012, 05:33:06 AM |
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There seems to be a problem with pools on higher share difficulty. cgminer reports the hashrate fine but what gets recognized by the pool is not. Neither invalids or stales are detected they seem just to disappear in a black hole. ![Huh](https://bitcointalk.org/Smileys/default/huh.gif) I can't tell if I am the only one having this problem or if it is just cgminer - reaper doesn't really work for me, it always tries to use my cpu as well. What higher difficulty pool is that? On ozcoin difficulty is set to 20 and shares are returned fine and the pool reports the same hashrate. There is a change I do need to make to share difficulty checking as this code is as yet still incomplete so it's entirely possible you have just the right combination of difficulty and pool.
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Developer/maintainer for cgminer, ckpool/ckproxy, and the -ck kernel 2% Fee Solo mining at solo.ckpool.org -ck
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ElectricMucus
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July 24, 2012, 05:50:44 AM Last edit: July 24, 2012, 06:12:18 AM by ElectricMucus |
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ozcoin is working fine, the most problems are with p2pool which reports something like 20hashes/sec. But also on coinotron (was working fine before they changes something), 3.6 kh. I Tried ltcmine too which seems to report 27kh instead of 240 trying ltc.kattare.com right now.. seems fine, using it now since ozcoin already seems actively hopped ![Angry](https://bitcointalk.org/Smileys/default/angry.gif) I have 20shares/minutes with them if that helps anything. I would really prefer p2pool though with all the ddosing going on.
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-ck
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July 24, 2012, 08:02:28 AM |
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I've updated the target difficulty testing in the git tree. I'm reasonably sure it wasn't working properly before.
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Developer/maintainer for cgminer, ckpool/ckproxy, and the -ck kernel 2% Fee Solo mining at solo.ckpool.org -ck
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dust
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July 24, 2012, 08:41:30 AM |
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Has anyone gotten decent hashrates with a 5970?
The highest multiple I can set thread-concurrency is 1600. With intensity 11, I get about 130kh/s per gpu. At intensities 12 and over, the best I can get is 250kh/s from each gpu on the first card the both gpus on the second 5970 get "SICK".
How are you guys able to use such high thread-concurrency settings?
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-ck
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July 24, 2012, 08:46:41 AM |
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Has anyone gotten decent hashrates with a 5970?
The highest multiple I can set thread-concurrency is 1600. With intensity 11, I get about 130kh/s per gpu. At intensities 12 and over, the best I can get is 250kh/s from each gpu on the first card the both gpus on the second 5970 get "SICK".
How are you guys able to use such high thread-concurrency settings?
Your system ram matters as well as your OS with this.
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Developer/maintainer for cgminer, ckpool/ckproxy, and the -ck kernel 2% Fee Solo mining at solo.ckpool.org -ck
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-ck
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July 24, 2012, 08:47:23 AM |
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I've updated the target difficulty testing in the git tree. I'm reasonably sure it wasn't working properly before.
tested on coinotron works fine now
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Developer/maintainer for cgminer, ckpool/ckproxy, and the -ck kernel 2% Fee Solo mining at solo.ckpool.org -ck
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penek
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July 24, 2012, 09:05:09 AM |
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I've updated the target difficulty testing in the git tree. I'm reasonably sure it wasn't working properly before.
tested on coinotron works fine now what internal difficulty on coinontron? with internal difficulty 256 dont work on intensivity >10 on old and updated git's
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ElectricMucus
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July 24, 2012, 09:21:01 AM |
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thanks alot ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) on a somewhat related issue: can I nail you some time on getting a mingw gcc environment capable of compiling btc and ltc running?
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-ck
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July 24, 2012, 09:38:56 AM |
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I've updated the target difficulty testing in the git tree. I'm reasonably sure it wasn't working properly before.
tested on coinotron works fine now what internal difficulty on coinontron? with internal difficulty 256 dont work on intensivity >10 on old and updated git's I assume you read my long post about intensity, maximum buffer size, valid shares, trampled memory, thread concurrency and so on? I mined for half hour on coinotron and it returned valid shares for that half hour and coinotron reported back the same rate I was hashing at. coinotron difficulty is "target": "000000000000000000000000000000000000000000000000000000c0cc0c0000" default is 0xffff Edit: There is an upper limit to difficulty it will accept, but that's only relevant to solo mining magnitudes, and then it will safely submit more attempts at solving it than necessary, not the other way around, so you should never miss a share unless you screw up your tc/lg settings making for invalid work.
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penek
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July 24, 2012, 10:36:08 AM |
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I assume you read my long post about intensity, maximum buffer size, valid shares, trampled memory, thread concurrency and so on? I mined for half hour on coinotron and it returned valid shares for that half hour and coinotron reported back the same rate I was hashing at.
I readed that post but I don't undestend why: cgminer with Nvidia GF 560 OC (--scrypt --lookup-gap 2 --thread-concurrency 8192 -w 256 -g 1 -I 20) say [2012-07-23 21:48:33] Maximum buffer memory device 0 supports says 268353536, your scrypt settings come to 536870912 but continues work
but with ATI 6930 and 6870 (--scrypt -I 10 -w 256 --lookup-gap 2 --thread-concurrency 4096 -g 2) with the same message [2012-07-23 21:58:43] Maximum buffer memory device 0 supports says 134217728, your scrypt settings come to 268435456 says the following [2012-07-23 21:58:43] Error -61: clCreateBuffer (padbuffer8), decrease CT or increase LG [2012-07-23 21:58:43] Failed to init GPU thread 0, disabling device 0
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-ck
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July 24, 2012, 10:39:02 AM |
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I assume you read my long post about intensity, maximum buffer size, valid shares, trampled memory, thread concurrency and so on? I mined for half hour on coinotron and it returned valid shares for that half hour and coinotron reported back the same rate I was hashing at.
I readed that post but I don't undestend why: cgminer with Nvidia GF 560 OC (--scrypt --lookup-gap 2 --thread-concurrency 8192 -w 256 -g 1 -I 20) say [2012-07-23 21:48:33] Maximum buffer memory device 0 supports says 268353536, your scrypt settings come to 536870912 but continues work
but with ATI 6930 and 6870 (--scrypt -I 10 -w 256 --lookup-gap 2 --thread-concurrency 4096 -g 2) with the same message [2012-07-23 21:58:43] Maximum buffer memory device 0 supports says 134217728, your scrypt settings come to 268435456 says the following [2012-07-23 21:58:43] Error -61: clCreateBuffer (padbuffer8), decrease CT or increase LG [2012-07-23 21:58:43] Failed to init GPU thread 0, disabling device 0
1. it reports you are over the limit and the device merrily goes away trashing data 2. it reports you are over the limit and you try to set it over that limit and the device just refuses Devices respond differently to different invalid values. That's why it's a warning.
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Developer/maintainer for cgminer, ckpool/ckproxy, and the -ck kernel 2% Fee Solo mining at solo.ckpool.org -ck
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July 24, 2012, 11:08:05 AM |
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Added the --shaders option now - Make the thread concurrency and lookup gap options hidden on the command line and autotune parameters with a newly parsed --shaders option. So you should only need to try --shaders and -I now. Note that any intensity above 13 is a gamble and highly dependent on hardware/software combination as to whether it's better, so -I 13 is a good start. Here's the table again: GPU Processing Elements 7750 512 7770 640 7850 1024 7870 1280 7950 1792 7970 2048
6850 960 6870 1120 6950 1408 6970 1536 6990 (6970x2)
6570 480 6670 480 6790 800
6450 160
5670 400 5750 720 5770 800 5830 1120 5850 1440 5870 1600 5970 (5870x2)
And for those who need me to spell it out, let's say you have a 5830, try this first: --shaders 1120 -I 13
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Developer/maintainer for cgminer, ckpool/ckproxy, and the -ck kernel 2% Fee Solo mining at solo.ckpool.org -ck
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Greedi
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July 24, 2012, 03:47:59 PM |
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any body else having troubles running cgminer on p2pool?
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penek
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July 24, 2012, 04:28:55 PM |
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Added the --shaders option now
More better, more effectively
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Zoiner
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July 24, 2012, 06:10:03 PM |
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any body else having troubles running cgminer on p2pool?
Fixed as of version f98774c
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