Cudaminer Hashing away, but no blocks being accepted? Any help is appreciated.

[jplangan]

Hi all,

I have a few different types of mining going, mostly for fun, not really expecting much profit with the hardware I have.  One of the machines has an NVidia GeForce 8400 GS gpu.

After finally getting cudaminer installed and the drivers going, I have been experimenting with settings to see what kind of hash rates I can get.

I got fairly excited when I saw:
[2013-12-18 07:31:48] GPU #0: GeForce 8400 GS, 1003520 hashes, 122.66 khash/s

I am getting occasional errors:
[2013-12-18 07:32:13] GPU #0: GeForce 8400 GS result does not validate on CPU (i=62, s=1)!

But in general, it runs right around 120-130 khash/s.

The problem is that I never see a block get accepted.  I am mining a litecoin pool and it looks like cuda is using the scrypt algo.

Here is my current command line and what it shows on startup:

cudaminer -l L16x4  -o stratum+tcp://usa.wemineltc.com:3334  -u jplangan.cuda -p x -H 1 -i 0

           *** CudaMiner for nVidia GPUs by Christian Buchner ***
                     This is version 2013-12-10 (beta)
        based on pooler-cpuminer 2.3.2 (c) 2010 Jeff Garzik, 2012 pooler
               Cuda additions Copyright 2013 Christian Buchner
           My donation address: LKS1WDKGED647msBQfLBHV3Ls8sveGncnm

[2013-12-18 07:29:29] 1 miner threads started, using 'scrypt' algorithm.
[2013-12-18 07:29:29] Starting Stratum on stratum+tcp://usa.wemineltc.com:3334
[2013-12-18 07:29:30] Stratum detected new block
[2013-12-18 07:29:30] GPU #0: GeForce 8400 GS with compute capability 1.1
[2013-12-18 07:29:30] GPU #0: interactive: 0, tex-cache: 0 , single-alloc: 0
[2013-12-18 07:29:30] GPU #0: using launch configuration L16x4

Any suggestions?  Thanks in advance!

JPL

PS: OS is  Ubuntu 12.04.3 LTS (GNU/Linux 3.2.0-57-generic-pae i686)

[dmpotter]

try us3.wemineltc.com:3334 and I would get rid of the other arguments too, looks like your trying to force a hash rate. It would be hard pressed to get above 50 with many even newer cards.

https://litecoin.info/Mining_hardware_comparison

[eagleeyez]

remove the L16x4 and try auto... or google for some other setting who are appropriate for your card, there is spreadsheets who list this type of information and you can't get wrong.