LTC GPU Miner Source Code Reward Thread

[tacotime]

Wait are the speeds being listed as actual speeds of running litecoin and its scrypt algorithm?

If so then the network hashrate should be jumpin sky high right now.

Please clarify...

thanks

The price of LTC is comparable to the price of BTC based on per watt averages.  Mining LTC is slightly more profitable based on the average price of LTC right now, however most people would rather mine BTC as there is much greater liquidity and lower volatility (LTC price has been fluctuating on an order of magnitude for the past few months).

[Cosbycoin]

Wait are the speeds being listed as actual speeds of running litecoin and its scrypt algorithm?

If so then the network hashrate should be jumpin sky high right now.

Please clarify...

thanks

The price of LTC is comparable to the price of BTC based on per watt averages.  Mining LTC is slightly more profitable based on the average price of LTC right now, however most people would rather mine BTC as there is much greater liquidity and lower volatility (LTC price has been fluctuating on an order of magnitude for the past few months).

Thanks for the info, but you really didn't answer my question....so ...um no thanks?

[moocow1452]

Wanted to get it running with Reaper on my 335m (Alienware m11x, Windows 8,) but it has been fighting me every step of the way. I've narrowed it down to the driver being able to be installed, and even got it to recognize CUDA on one particular driver, but that's been about it as far as luck goes.

Update: An Old Beta Driver was the ticket, now it's just having trouble putting the thing together.

Code:

Using all devices
        0       GeForce GT 335M
Compiling kernel... this could take up to 2 minutes.
:14: error: no matching overload found for arguments of type 'unsigned int  __a
tribute__((ext_vector_type(4))), unsigned int'
        return rotl(n&0x00FF00FF,24U)|rotl(n&0xFF00FF00,8U);
               ^~~~
:607: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[0] ^= rotl(w[3]     +w[2]     , 7U);
                        ^~~~
:608: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[1] ^= rotl(w[0]     +w[3]     , 9U);
                        ^~~~
:609: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[2] ^= rotl(w[1]     +w[0]     ,13U);
                        ^~~~
:610: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[3] ^= rotl(w[2]     +w[1]     ,18U);
                        ^~~~
:611: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[2] ^= rotl(w[3].wxyz+w[0].zwxy, 7U);
                        ^~~~
:612: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[1] ^= rotl(w[2].wxyz+w[3].zwxy, 9U);
                        ^~~~
:613: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[0] ^= rotl(w[1].wxyz+w[2].zwxy,13U);
                        ^~~~
:614: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[3] ^= rotl(w[0].wxyz+w[1].zwxy,18U);
                        ^~~~
:624: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[0] ^= rotl(w[3]     +w[2]     , 7U);
                        ^~~~
:625: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[1] ^= rotl(w[0]     +w[3]     , 9U);
                        ^~~~
:626: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[2] ^= rotl(w[1]     +w[0]     ,13U);
                        ^~~~
:627: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[3] ^= rotl(w[2]     +w[1]     ,18U);
                        ^~~~
:628: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[2] ^= rotl(w[3].wxyz+w[0].zwxy, 7U);
                        ^~~~
:629: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[1] ^= rotl(w[2].wxyz+w[3].zwxy, 9U);
                        ^~~~
:630: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[0] ^= rotl(w[1].wxyz+w[2].zwxy,13U);
                        ^~~~
:631: error: no matching overload found for arguments of type 'unsigned int  __
ttribute__((ext_vector_type(4))), unsigned int'
                w[3] ^= rotl(w[0].wxyz+w[1].zwxy,18U);
                        ^~~~

2012-03-12 23:41:07 Error: Error building OpenCL program

[Rubberduckie]

Any of you guys solo mining LTC with reaper?

I'm not submitting any shares in reaper but GPU is @ 100%,just wondered if this is normal.

[Tittiez]

Any of you guys solo mining LTC with reaper?

I'm not submitting any shares in reaper but GPU is @ 100%,just wondered if this is normal.

I told you, when you solo mine duckie, one share = a block

Therefor you will have to wait awhile. Or, you know, you can point your miner to my ltc p2pool node. :~)

Edit:

Looking at litecoinpool, you have about 300kh/s if it is correct. Therefor, it should take you about 4-7 hours per block. (Variance is a killer though)

[n4l3hp]

Finally got it working on my 6870. Using Reaper 13 Beta 2 Win32.

Stock settings (900/1050)

worksize 64
aggression 11
threads_per_gpu 2
sharethreads 8
lookup_gap 2
gpu_thread_concurrency 2048 (anything higher will cause Reaper to exit if I dont increase lookup_gap)

190Kh/s (less than 1% stale at Coinotron 1 hr)

Using aggression 14 will bump it to 320Kh/s but at 80-90% stales.

[Bitinvestor]

Does anybody have it working on a 79xx? It doesn't work on my 7950, I get 100% stales.

[n4l3hp]

Try lower aggression.

[Bitinvestor]

Try lower aggression.

Yes, I did that. I also played with all the other settings. The result is the same: 100% stales all the time.

[tacotime]

The CL code is specific to the hardware in the 5xxx and 6xxx series...  it doesn't compile at all for nVidia cards and it's not surprising that it doesn't compile for the 7xxx series too.

[Tittiez]

Try lower aggression.

Yes, I did that. I also played with all the other settings. The result is the same: 100% stales all the time.

I had trouble with worksize, anything under/over 256 would break my miner, making it report MH/s rather then kH/s and it wouldn't send any shares. Try 256 worksize. Also, as bad as this may sound, you could mine a litecoinpool because it pays for stales. But you would only be benefiting yourself, so I wouldn't.

[Bitinvestor]

I had trouble with worksize, anything under/over 256 would break my miner, making it report MH/s rather then kH/s and it wouldn't send any shares. Try 256 worksize. Also, as bad as this may sound, you could mine a litecoinpool because it pays for stales. But you would only be benefiting yourself, so I wouldn't.

Nope, doesn't work with worksize 256. I tried connecting to litecoinpool but they don't want my stales, they call them Invalid Shares (reaper calls them stales).

The CL code is specific to the hardware in the 5xxx and 6xxx series...  it doesn't compile at all for nVidia cards and it's not surprising that it doesn't compile for the 7xxx series too.

Yep, looks like I'll have to wait until somebody fixes this.

[Sherkel]

Getting "Weird response from server." on my 6570 (don't ask) with these settings:
worksize 256
aggression 1
threads_per_gpu 1
sharethreads 10
lookup_gap 2
gpu_thread_concurrency 2048
cpu_mining_threads 0

Next thing I knew, I had 440 invalid shares on litecoinpool. I tried worksizes 64 and 128, and both got rid of the message but gave no shares, even stale ones.

[tacotime]

Yep, looks like I'll have to wait until somebody fixes this.

v13 beta 3:

Fixed compiling for Tahiti (79xx), and probably many other cards too
Using Catalyst 12.2 or newer is now recommended

http://zerosignalgame.com/reaperv13beta3_64.zip

[Bitinvestor]

Yep, looks like I'll have to wait until somebody fixes this.

v13 beta 3:

Fixed compiling for Tahiti (79xx), and probably many other cards too
Using Catalyst 12.2 or newer is now recommended

http://zerosignalgame.com/reaperv13beta3_64.zip

That didn't take long, haha! Unfortunately I've run out of time for today. I'll test it tomorrow.

[tacotime]

Yup...  Got a 6870 undervolted to 1000mV @ 850MHz and it's doing 280 kh/s and stays in the 60C's at only 50% fan speed.

[Sherkel]

Yep, looks like I'll have to wait until somebody fixes this.

v13 beta 3:

Fixed compiling for Tahiti (79xx), and probably many other cards too
Using Catalyst 12.2 or newer is now recommended

http://zerosignalgame.com/reaperv13beta3_64.zip

It works!
I only get about 14 kH/s, but it's to be expected with a 6570.

[Fuzzy]

Yup...  Got a 6870 undervolted to 1000mV @ 850MHz and it's doing 280 kh/s and stays in the 60C's at only 50% fan speed.

What are your litecoin.conf settings?

[Rubberduckie]

Yup...  Got a 6870 undervolted to 1000mV @ 850MHz and it's doing 280 kh/s and stays in the 60C's at only 50% fan speed.

What are your litecoin.conf settings?

in reaper:

host localhost
port 9332
user ***************************
pass *************fart****


protocol litecoin

worksize 256
aggression 15
threads_per_gpu 1
sharethreads 18
lookup_gap 2
gpu_thread_concurrency 6144

in appdata:


rpcuser=*****************
rpcpassword=***************fart**********
server=1
daemon=1

[tacotime]

Yup...  Got a 6870 undervolted to 1000mV @ 850MHz and it's doing 280 kh/s and stays in the 60C's at only 50% fan speed.

What are your litecoin.conf settings?

stock