Topic: [ANN] cudaMiner & ccMiner CUDA based mining applications [Windows/Linux/MacOSX] - page 1072. (Read 3426921 times)

Hi, I tried tens of combinations. No luck, impossible to get more than 20 kHash O.o


the results seems pretty random... do you use 64 bit cudaminer or 32 bit ? what drivers?

Ahhhh ok, some of the confusion gets cleared.. I use bitcoin not Litecoin, that's where all the confusion lies. I figured that it could go vise verse but I guess not.

Antares88: I have 9800GT that is actually the same 8800GT. As I posted before, I couldn't find good settings for that card. Also, I get strange differences in speed with every time running miner with the same settings.
If you succeed  finding optimal settings for that card, please share them. It's interesting how much can score that old cards. My best speed I get is ~25kh/s, but it's not stable as not always MCU gets the same load. Sometimes it gets only half of load and i get only 14kh/s

hi, try to use different combinations, maybe all of them :-)

 -i 0 (or 1)
 -m 1 (with or without)
 -C 0 (or 1 or 2 or without)
 -H 1 (with or without)
autotuning kernel for best results: -l Fauto (or  -l Tauto or -l Sauto)

Hi everyone, I'm new here.

I'm trying to mine Litecoins with my GPU, a 8800gt, but I'm not able to get more than 20 kHash/s. I know that it's an old card and that cudaMiner is young, but from the charts it seems i should get way better results.
I'm using the settings -l 28x3 -i 1 -C 0
L14x3, L26x3 are giving similar results.
Many other configurations just don't work, with cudaMiner crashing. Others are giving impossible hashrates (i.e. 66x2 -> 324 kHash/s) that are not validated by processor. Autotune gives every time different results and often crashes trying L0x0.
Any advice ?

I'm on Win7 x64, CPU i5-2500k, nvidia driver 320.78

I think it is because http://api.bitcoin.cz:8332 is only for SHA256 - bitcoin mining, not scrypt - litecoin mining...

0diz, that means your shares are being rejected by the pool. Are you sure you have the address and port set correctly? In your log output it says port 3333 but in the url below it, you show port 8332.

So I'm trying to get CUDAMiner to work but this is what I keep getting... I searched the forum but nothing with (booooo) came up 


[2013-11-26 16:42:19] 1 miner threads started, using 'scrypt' algorithm.
[2013-11-26 16:42:19] Binding thread 0 to cpu 0
[2013-11-26 16:42:23] Starting Stratum on stratum+tcp://stratum.bitcoin.cz:3333
[2013-11-26 16:42:24] Stratum detected new block
[2013-11-26 16:42:25] GPU #0: GeForce GTX 650 with compute capability 3.0
[2013-11-26 16:42:25] GPU #0: interactive: 1, tex-cache: 0 , single-alloc: 0
[2013-11-26 16:42:25] GPU #0: Performing auto-tuning (Patience...)
[2013-11-26 16:42:39] GPU #0:   61.54 khash/s with configuration K10x6
[2013-11-26 16:42:39] GPU #0: using launch configuration K10x6
[2013-11-26 16:42:39] GPU #0: GeForce GTX 650, 5760 hashes, 0.39 khash/s
[2013-11-26 16:42:40] GPU #0: GeForce GTX 650, 24960 hashes, 38.10 khash/s
[2013-11-26 16:42:41] GPU #0: GeForce GTX 650, 44160 hashes, 39.32 khash/s
[2013-11-26 16:42:41] accepted: 0/1 (0.00%), 39.32 khash/s (booooo)
[2013-11-26 16:42:42] Stratum detected new block
[2013-11-26 16:42:42] GPU #0: GeForce GTX 650, 61440 hashes, 39.78 khash/s
[2013-11-26 16:42:43] GPU #0: GeForce GTX 650, 21120 hashes, 37.61 khash/s
[2013-11-26 16:42:43] accepted: 0/2 (0.00%), 37.61 khash/s (booooo)
[2013-11-26 16:42:45] GPU #0: GeForce GTX 650, 69120 hashes, 39.92 khash/s
[2013-11-26 16:42:45] accepted: 0/3 (0.00%), 39.92 khash/s (booooo)
[2013-11-26 16:42:46] GPU #0: GeForce GTX 650, 63360 hashes, 39.82 khash/s
[2013-11-26 16:42:46] accepted: 0/4 (0.00%), 39.82 khash/s (booooo)

I'm using the following setup: "cudaminer.exe -o http://api.bitcoin.cz:8332 -O Worker:Pass"

Does anyone know how to stop the (booooo) from happening? Or does anyone have any tips to try?

Note: I'm running a Win 7 64x machine

What settings should be best for K5000 & K6000? Autotuning K5000 gets at best 136 kH/s.

Some tests on my 780Ti show that the 450 kHash/s performance limit is somewhat related to memory transfer performance.

When I comment out the compute intensive xor_salsa subroutine entirely, the GPU still hashes at 450 kHash/s, consumes 85% TDP and shows 99% GPU load, 50% memory controller load. This is quite astonishing for a GPU that only moves data between global and shared memory and back! Why is it still consuming so much power? And why does it only show 50% memory controller load even if this appears to be the limiting factor?

In order to achieve ANY improvement here, I will have to come up with some new ideas about more efficient memory storage layout and transfers.

I don't run XP, as I wrote, I run Vista x64.
Tried -i 0 -C 2. With --benchmark system starts laging. When mining not so much, but feels little bit lagging too.
But -i 0 -C 2 does not give better results. Just after I had speed ~24kh/s, I stopped miner and tried i and C values, autotuning with Fermi and Kepler and could not get more than 15.2kh/s. After that tests, I returned to my default command line:
cudaminer -a scrypt -o stratum+tcp://coinotron.com:3334 -O mirer.usr:pass -i 1 -l K14x3 -R 5 -H 1
and I get 24-25.27kh/s again! I don't get what makes the difference. Looks like some register in the card or some setting value in driver is changing. I can't explain that...

Maybe I can run some test for you? It would be interesting to find the reason of such strange problem.

Windows XP or Linux works better for old Compute 1.x devices. Different driver model.
Strange that you're not getting decent performance on Windows XP 64 bit...

I don't run these old cards anymore. I wish I could still test this...

You running with -i 0 and -C2 also? What happens when you let it autotune the Fermi or Kepler kernel instead of the Legacy kernel with -l F or -l K ?

Hi everyone.
Got intrested in mining LTC and have a card NVidia 9800GT. I know, it's an old card, it's not very effective, but i'm not trying to get much profit. There's just interest.
Tried cudaminer 2013-11-20 (both 32bit and 64bit) on Windows Vista x64 SP2. Driver ver. 331.82 (also tried 314.22). My CPU is Q6600.
As someone wrote in this forum, with 9800GT we could get ~45kh/s if card is overclocked. So, i was expecting to get around 30-35kh/s without overclocking. But I get very strange results:
Autotune gives different result/configuration every time. So by trying i've found best settings like this:
-l K14x3
Unfortunately, I get only ~14kh/s with these settings. Card loads at that speed are GPU: ~95% MCU: 15%
But! sometimes, I just don't know the reason, I get better result - 24kh/s. Card loads changes GPU: ~92% MCU: 26%. So I believe, that in that case GPU is used more effectively. But why with the same config MCU load differs?
If i stop and run miner again, I get 14kh/s again... To get better speed sometimes I have to try stop/load miner lots of time (did not tried to do it specially). It happens about once a day.
Tried different drivers, thew different versions of cudaminer. What can be the reason of such low speed and diferrent results with the same configuration? And how can I spot the problem?

cbuchner1:

At which clock is running your GTX 780Ti in GPU-Z ? 450khash/s is unbelievable...

I have Zotac GTX Titan AMP! with cpu i7 2600k@4,6Ghz:

Best results i have: -d 0 -i 0 -C 2 -m 1 -H 1 -l T222x1
 80C, 2180RPM FAN and 88%TDP @ 966Mhz


           *** CudaMiner for nVidia GPUs by Christian Buchner ***
                     This is version 2013-11-20 (alpha)
        based on pooler-cpuminer 2.3.2 (c) 2010 Jeff Garzik, 2012 pooler
               Cuda additions Copyright 2013 Christian Buchner
           My donation address: LKS1WDKGED647msBQfLBHV3Ls8sveGncnm

[2013-11-26 19:54:45] 1 miner threads started, using 'scrypt' algorithm.
[2013-11-26 19:54:45] Long-polling activated for http://localhost:8332/lp
[2013-11-26 19:54:46] GPU #0: GeForce GTX TITAN with compute capability 3.5
[2013-11-26 19:54:46] GPU #0: the 'T' kernel ignores the texture cache argument
[2013-11-26 19:54:46] GPU #0: interactive: 0, tex-cache: 0 , single-alloc: 1
[2013-11-26 19:54:46] GPU #0: using launch configuration T222x1
[2013-11-26 19:54:46] GPU #0: GeForce GTX TITAN, 7104 hashes, 31.27 khash/s
[2013-11-26 19:54:48] GPU #0: GeForce GTX TITAN, 923520 hashes, 383.56 khash/s
[2013-11-26 19:54:48] accepted: 1/1 (100.00%), 383.56 khash/s (yay!!!)
[2013-11-26 19:54:54] GPU #0: GeForce GTX TITAN, 2401152 hashes, 389.99 khash/s
[2013-11-26 19:54:54] accepted: 2/2 (100.00%), 389.99 khash/s (yay!!!)
[2013-11-26 19:55:06] GPU #0: GeForce GTX TITAN, 4631808 hashes, 391.26 khash/s
[2013-11-26 19:55:06] accepted: 3/3 (100.00%), 391.26 khash/s (yay!!!)

https://litecoin.info/Mining_Hardware_Comparison#AMD_.28ATI.29

According to that anywhere from 250-450Kh/s for that card.

-H 1 gives me about 5 kHash more, so it helps some, but still nearly 35 kHash/sec lower than the 32 bit client. This box is an older Quad core i7 with HT, so 8 usable cores.

Don't forget the -H 1 flag, otherwise it will only use a single core of the CPU - which can be a bottleneck.

I am not having much luck running a Kepler kernel on my 780Ti. Can't get much above 400 khash/s. -C 2 -l K119x4 is the best I can do and it results in 401.8 kHash/s

UPDATE: using the 32 bit cudaminer binary and -C 2 -l K119x4 actually gets me to 445 kHash/s. But at the price of increased CPU usage.

Back to Titan kernel for me!

UPDATE2: And now I find that with the 32 bit cudaminer and -l T30x16 I actually get around 450 kHash/s. There seems to be a definitive register advantage in the 32 bit CUDA kernels, making the code run faster.

One other thing that bugs me is that my Phenom X6 1055T CPU is pegged at 80% load when all my 4 GPUs are running at around 800 kHash/s total. I think I should add an option to do the SHA256 hashing on the GPU, lowering the CPU load below 10%, even if it costs a few kHash/s of performance.

I have a Phenom II X4 too, so that's not the reason.

I found it somewhere on the net :-)
With other configs, I have only 80-150kh/s, dont know why. People here have more kh/s than my GPU. With this config, it it running better.

Maybe...I have Phenom II x4 955 3.2Ghz. When mining, it is utilized about 30%.