Nice touch for the hardware pooler  I've lowered the Intensivity 2013-07-10 647 kH/s 503,488 2,688 (0.53%) 0 (0.00%) 0.421893741696 LTC
2013-07-09 649 kH/s 841,784 14,162 (1.65%) 1 (0.00%) 0.705366168528 LTC
but I have changed too the pool server from nl2 to stratum+tcp://litecoinpool.org:3333/ I assume .org redirect to random nl nl1 or nl2 server How can I found the server I'm related ? Thanks in advance for you help  Nice! cgminer displays the address of the server you're currently connected to; consider that the main server may redirect you to secondary servers for load-balancing purposes. |
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it was the question, what do I need to check on the conf  That depends on your software and GPU. It's hard to say what needs to be tweaked. As some like to say, fine-tuning scrypt GPU mining is an art, and experimentation is often the key to a successful setup. I gave you a hint, though, when I mentioned intensity as a possible cause; generally speaking, anything that pushes the hardware too hard can cause latency. |
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In my experience, stale shares can be caused by the following:
- Network latency. This is the most obvious cause. If a share takes too much time to get to the server it can easily turn stale.
- Block frequency. The more frequently the network is finding blocks, the more frequent the stales. This means that if the network difficulty is going up the stales will be higher.
- Server inefficiency. If the server is slow at handling submissions, some shares will turn stale. A high load can of course cause slowdowns.
- Software latency. Latency can also occur before the share leaves the miner, especially in the case of GPU mining. For example, if the intensity/aggressiveness parameter is set too high.
@dermo, in your case it seems that the first cause is not the problem, as your ping time to the server is low. The difficulty is currently rising but not dramatically, so I wouldn't consider cause #2 either. As regards cause #3, the average stale rate for the nl2 server is just 1%. The occurrence of stales is subject to probability, of course, but your 2% seems pretty high when compared to the average, so I would suggest that you check your miner's configuration. |
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Hi, I've created a fork of the cpuminer repo, in preparation for making a cudaMiner version that supports Stratum. I've disabled all the 4way, 3way and 8way codes, so now my AMD Phenom X6 will just use the slow scalar code, making 10khash/s with scrypt on all 6 CPU cores.
Has the scalar code been tested recently? When running this against the coinotron stratum server, the code now submits a lot of results, and all of them return "boo!" . This is puzzling: at 10 kHash/s I would not expect that many hashes to be submitted (in the order of 5-10 per minute). As far as I know, coinotron is not a vardiff server.
To be on the safe side I've tested it on my own Phenom X6, and it seems to be working. Hash rate is about 16 kh/s, as opposed to 32 kh/s for the optimized version. It doesn't work on Coinotron, though, because their Stratum server has a bug and doesn't communicate difficulty properly to miners (more info here). UPDATE: Coinotron has now fixed the difficulty bug. |
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Is there a way to specify a separate logfile on the Mac instead of the syslog?
You can redirect stderr to a file: minerd [OPTIONS] 2> /path/to/myfile
This should also work when used in conjunction with the --background option. |
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I'm having a problem with minerd not able to connect to a stratum pool behind a corporate proxy. I can connect to a different longpoll pool fine using the proxy settings but stratum+tcp fails. The same stratum settings work fine outside the Corp proxy on my other mining boxes.
Are the proxy settings only configured to work when you aren't using stratum?
You can't use Stratum with a HTTP proxy because Stratum does not operate over HTTP, but you can use a SOCKS4/5 proxy. For further assistance, please specify the type of proxy and the exact command-line arguments you have tried. |
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Is it possible to add Intel Xeon Phi support (MIC architecture)?
Thanks!
If you or someone else can give me access to the hardware, I might try to give it a go. |
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Hi, maybe this is not a perfect thread for this, but anyway... I have a problem with connecting to mine some LTC
2013-07-03 16:01:07: Listener for "6790": [2013-07-03 16:00:06] Started cgminer 3.1.0
You're definitely in the wrong thread. Ask in your pool's thread or in the thread for cgminer, and provide more info about your configuration. |
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Ah, didn't know about the DDoS. That, combined with my spotty ISP, is probably what was attributing to my stale/invalid shares. Which resulted in some of my miners being banned. However, I am using Stratum.
How long does a temp ban last? I have to hook-up a monitor and mouse down every time to restart the miner. If the ban only lasts ten minutes or so, I won't bother going through the hassle knowing it will auto fix itself in a short span.
This type of ban only lasts 15 minutes. |
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Just got home and went to check my web account. One of my rigs is down, and two others are hardly hashing away. I just checked Cgminer on one of my rigs, and it says <banned>. What's going on?
The connection between your miner and the pool probably got unstable because of the ongoing DDoS. This can cause the miner to submit too many wrong solutions, which results in a temporary ban. This is much more likely to happen if you are not using Stratum. |
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I did, its says at this domain? By sending an email to applications (at) (this domain).
That's just a measure to protect against automated email harvesters. In case you can't figure it out, the address is:  |
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When will the registrations be open? Looking to point 8 7950s at a PPs LTC pool.
As I've said before, you can apply for an account via email. Please read the guidelines on the website. By the way, the DDoS is still ongoing, but its effects are limited at the moment. |
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A DDoS attack is currently affecting the website and some of the miners.
Make sure you have failover correctly set up in cgminer.
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Will changing my scantime affect performance on older, slower computers?
Brief note on the -s/--scantime option
I have seen people suggest various values for this option in order to reduce stales when mining in pools.
The funny thing is that, to my knowledge, all Litecoin pools have long polling permanently enabled (which is good), and when long polling is enabled the scantime parameter is completely ignored.
For this reason, the use of this parameter only makes sense when you are mining solo.
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is there built in support for failover to different configurations if (eg) a p2pool node goes down, or would one need to write their own external script for that?
No native support for that at this point, sorry. See here for some sample failover scripts. |
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When I configure CFLAGS="-03" is says that "C cannot compile executables"
It's "-O3", not "-03". See the difference? (It's big O, not zero.) |
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what is the conditions of joining your pool ?
At the moment there are no fixed requirements. Applications are reviewed on a case-by-case basis. |
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I run cpuminer at ARM CPU and it crashes [...]
Thanks for reporting, using the data you provided I was able to locate a bug that can cause a crash on certain Stratum data, but apparently only when compiling with older versions of gcc. It's not an architecture-dependent bug, though. I have pushed a fix to the git repo, would you be so kind to test it? |
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is this miner optimized for SSE 4.1?
The algorithm implementations don't use any SSE4 instruction. I just didn't find much use for them. |
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Virus over there in win32 version.
Known false positive. https://github.com/pooler/cpuminer/issues/13I just bought Haswell is there chance to have some big benefit from AVX2 or TSX, ect in near future?
Yes, and I have plans to work on that. |
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