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Author Topic: Mining Litecoin solo, lots of reject blocks!  (Read 8540 times)
mc_lovin
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October 12, 2012, 06:00:22 PM
#1

Hey we are solo mining litecoin over here and we have over 100 reject blocks with 3-4 GH/s over the past few days.

Any idea why we are getting so many reject blocks?

We got 1 block confirm in the first hour, and now its rejectsville!

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Come-from-Beyond
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October 12, 2012, 06:34:52 PM
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Someone attempting 51% attack?

PS: https://bitcointalk.org/index.php?topic=117549.00
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October 12, 2012, 06:53:51 PM
#3

Hey we are solo mining litecoin over here and we have over 100 reject blocks with 3-4 GH/s over the past few days.

Any idea why we are getting so many reject blocks?

We got 1 block confirm in the first hour, and now its rejectsville!

I think you mean MH/s not GH/s Wink

Don't know, when you mine at a pool do you receive high stales/invalids? Could be caused by an incorrectly configured miner.
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October 12, 2012, 09:55:46 PM
#4

Hey we are solo mining litecoin over here and we have over 100 reject blocks with 3-4 GH/s over the past few days.

Any idea why we are getting so many reject blocks?

We got 1 block confirm in the first hour, and now its rejectsville!

Reduce intensity to 11 for Radeon VLIW 4, 5 or to 12 for GCN cards and try again

Looking to review Bitcoin / Crypto mining Hardware.
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October 12, 2012, 10:09:48 PM
#5

Hey we are solo mining litecoin over here and we have over 100 reject blocks with 3-4 GH/s over the past few days.

Any idea why we are getting so many reject blocks?

We got 1 block confirm in the first hour, and now its rejectsville!

I think you mean MH/s not GH/s Wink

Don't know, when you mine at a pool do you receive high stales/invalids? Could be caused by an incorrectly configured miner.

lol, yea I meant the boxes would normally be 3-4 GH/s in the bitcoin world, so like 3-4 MH/s in the litecoin world.  

Litecoin mining is so complicated..  Pretty sure it's configured correctly.

update: just put it on pooled mining and im getting rejected shares like a mofo!  

any tips?

intensity too high you say, eh, ill back it down a bunch and let you know!

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October 12, 2012, 10:33:14 PM
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lol, yea I meant the boxes would normally be 3-4 GH/s in the bitcoin world, so like 3-4 MH/s in the litecoin world.  

Litecoin mining is so complicated..  Pretty sure it's configured correctly.

update: just put it on pooled mining and im getting rejected shares like a mofo!  

any tips?

intensity too high you say, eh, ill back it down a bunch and let you know!

if you are using CGminer those are hardware errors.. essentially the computer is not doing the work properly.

First you need to tell us what cards you are using.

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October 12, 2012, 10:36:02 PM
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I pounded my head on this all night 2 nights in a row mclovin, when I got 6/8 gpus working the final 2 would become SICK or start hashing in MH or the threads would be killed. It was a pita, went back to btc mining until someone comes up with a memory stick version I can pop in and just buy that will run it in linux/ubuntu/whatever. I am offering 3btc for it if anyone is interested Smiley

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mc_lovin
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October 15, 2012, 08:55:30 PM
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lol, yea I meant the boxes would normally be 3-4 GH/s in the bitcoin world, so like 3-4 MH/s in the litecoin world. 

Litecoin mining is so complicated..  Pretty sure it's configured correctly.

update: just put it on pooled mining and im getting rejected shares like a mofo! 

any tips?

intensity too high you say, eh, ill back it down a bunch and let you know!

if you are using CGminer those are hardware errors.. essentially the computer is not doing the work properly.

First you need to tell us what cards you are using.


Ah, any cards!  There is a 3x 7970 box hammering away, a 3x 5830 box, and a 2x5850,3x5830 box. 

Confused I am, as to why this 2x5850,3x5830 box locks up so easily. 

With a conf like this (/root/.cgminer/cgminer.conf):

Code:
{
"pools" : [
        {
                "url" : "http://lc.ozco.in:9332",
                "user" : "xxx.xxx",
                "pass" : "xxx"
        }
]
,
"intensity" : "10,10,10,10,10",
"worksize" : "64,64,64,64,64",
"kernel" : "scrypt,scrypt,scrypt,scrypt,scrypt",
"gpu-engine" : "400-850,400-850,400-850,400-850,400-850",
"gpu-fan" : "20-85,20-85,20-85,20-85,20-85",
"gpu-memclock" : "920,920,920,920,920",
"gpu-memdiff" : "0,0,0,0,0",
"gpu-powertune" : "0,0,0,0,0",
"gpu-vddc" : "0.000,0.000,0.000,0.000,0.000",
"lookup-gap" : "2,2,2,2,2",
"thread-concurrency" : "3200,3200,3200,3200,3200",
"temp-cutoff" : "95,95,95,95,95",
"temp-overheat" : "85,85,85,85,85",
"temp-target" : "82,82,82,82,82",
"api-listen" : true,
"api-port" : "4028",
"expiry" : "120",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "1",
"log" : "5",
"queue" : "1",
"retry-pause" : "5",
"scan-time" : "60",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}

Then entering:
cd /opt/miners/cgminer
export DISPLAY=:0
export GPU_USE_SYNC_OBJECTS=1
export GPU_MAX_ALLOC_PERCENT=100
screen -q
./cgminer --api-listen --auto-gpu --auto-fan

I get happy times, but slow times.  This will continue up to like 500-1000 shares per card easily, I don't have the patience to wait for it to get to that point for this screen:

Code:
cgminer version 2.6.1 - Started: [2012-10-15 20:47:55]
--------------------------------------------------------------------------------
 (5s):467.1 (avg):322.6 Kh/s | Q:32  A:65  R:3  HW:0  E:203%  U:19.1/m
 TQ: 1  ST: 1  SS: 0  DW: 2  NB: 2  LW: 0  GF: 0  RF: 0
 Connected to http://lc.ozco.in:9332 with LP as user xxx.xxx
 Block: 154fe8cc8f769f2b29e2cf76dc52ba32...  Started: [20:50:10]
--------------------------------------------------------------------------------
 [P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit
 GPU 0:  71.0C  20%    |  93.2/ 77.9Kh/s | A:18 R:2 HW:0 U:5.29/m I:10
 GPU 1:  68.5C  20%    |  93.6/ 62.0Kh/s | A:13 R:1 HW:0 U:3.82/m I:10
 GPU 2:  61.5C 1040RPM |  94.0/ 56.0Kh/s | A: 8 R:0 HW:0 U:2.35/m I:10
 GPU 3:  60.5C 1379RPM |  93.0/ 64.5Kh/s | A:17 R:0 HW:0 U:5.00/m I:10
 GPU 4:  70.5C 1043RPM |  93.0/ 62.1Kh/s | A: 9 R:0 HW:0 U:2.65/m I:10
--------------------------------------------------------------------------------

 [2012-10-15 20:49:48] Accepted 261f7e00.47f5be05 GPU 3
 [2012-10-15 20:49:49] Accepted e9a0d5d2.5da5a971 GPU 0
 [2012-10-15 20:49:55] Accepted c33c43a2.0f46f2bc GPU 3
 [2012-10-15 20:49:55] Accepted 0cec0ab9.95f96611 GPU 2
 [2012-10-15 20:49:56] Accepted 84dae348.6fe0c951 GPU 0

Now if I take that exact same conf and change the intensity to 11 on all the cards, it locks up after awhile (but the speeds are much better, and there were little rejects).

Code:
cgminer version 2.6.1 - Started: [2012-10-15 20:30:02]
--------------------------------------------------------------------------------
 (5s):798.8 (avg):756.5 Kh/s | Q:56  A:280  R:1  HW:0  E:500%  U:44.1/m
 TQ: 1  ST: 1  SS: 0  DW: 2  NB: 2  LW: 0  GF: 0  RF: 0
 Connected to http://lc.ozco.in:9332 with LP as user xxx.xxx
 Block: 6f5cac2bb582aaaa693ed4d3d49ed8bb...  Started: [20:34:26]
--------------------------------------------------------------------------------
 [P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit
 GPU 0:  80.5C  67%    | 189.4/189.7Kh/s | A:65 R:0 HW:0 U:10.24/m I:11
 GPU 1:  83.0C  85%    | 119.5/105.8Kh/s | A:40 R:0 HW:0 U: 6.30/m I:11
 GPU 2:  80.5C 1057RPM | 148.0/144.2Kh/s | A:54 R:0 HW:0 U: 8.51/m I:11
 GPU 3:  78.5C 2163RPM | 189.9/183.8Kh/s | A:76 R:1 HW:0 U:11.98/m I:11
 GPU 4:  78.0C 2189RPM | 148.0/142.0Kh/s | A:46 R:0 HW:0 U: 7.25/m I:11
--------------------------------------------------------------------------------

 [2012-10-15 20:35:24] Accepted d71e40fd.2bbba67b GPU 3
 [2012-10-15 20:35:26] Accepted 0c6944d8.6c7a4860 GPU 3
 [2012-10-15 20:35:27] Accepted a138120d.4f4c351d GPU 0
 [2012-10-15 20:35:30] Accepted 666aea18.05f422af GPU 0
 [2012-10-15 20:35:32] Accepted a7e5f341.ee347a79 GPU 4

So it looks like GPU0 and GPU3 are the 5850s. 

I'll try those two at 10 intensity and the rest at 11 and see what happens.

I pounded my head on this all night 2 nights in a row mclovin, when I got 6/8 gpus working the final 2 would become SICK or start hashing in MH or the threads would be killed. It was a pita, went back to btc mining until someone comes up with a memory stick version I can pop in and just buy that will run it in linux/ubuntu/whatever. I am offering 3btc for it if anyone is interested Smiley

I would like that device as well, a plug-n-play LTC miner, I'm sure someone will create it, but once someone does..  Think of how high the LTC network hashrate is going to get... The learning curve with litecoin is what is keeping the hashrate down (or not). 

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November 13, 2012, 02:50:32 PM
#9

Reducing the intensity seemed to help me out a bit with the rejects. Still have a lot of them though!

Id love to see a miner/pool combo like bitminter. Its so easy to get going i always have to check if i forgot to click something  Smiley

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November 13, 2012, 02:54:53 PM
#10

did you compile with scrypt enabled?,what OS are you mining on?

Maybe get some help here

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