CCminer(SP-MOD) Modded GPU kernels.

[sp_]

unfortunately with the latest release intensity 21 now crashes my cards (GPU GTX 970, two of them in SLI)
previously it was fine, now I am setting it to 20 meanwhile

try -i 20.9, 20.8, 20.7....  etc until you get the optimal rate

Note that the optimal intensity might vary from build to build. the default should not be to bad. If you find a setting that is optimal, please tell me and I will set it as default

[sp_]

1 bottle of 40% thai whiskey costs 0,0088487 BTC

Suddenly, I want to go to Thailand. I'm afraid I might stay there though.

But thaiwhiskey is made from rice and not potatoes. Doesn't taste as good as what we are used to..
Prefer beer.

Today I ate a bigmac at McDonald's 0,01453715 BTC.

More expensive than 1 hour of thai-massage.

And in the tourist areas you can multiply the prices by 3-5

[antonio8]

In the north east thailand:

1 hour of Thai-massage costs        0.012641 BTC
1 bottle of 40% thai whiskey costs 0,0088487 BTC
1 noudlesoup meal with meat and clean ice water in the resturant costs 0,0029495  BTC

I am going to comment on this.

Those are some awesome prices. Here 20x that and you still don't get a massage.

Enjoy.

[sp_]

[sp_]

[scotte]

comparing v43 vs. v44 for my gtx750(non-ti) (windows binaries from github)
x15: 1966 vs 1976
x13: 2272 vs 2270
x11: 2886 vs 2883
quark: 5700 vs 5660
qubit: 4418 vs 4419 (with drops)
lyra: 882 vs 881
So, only x15 gain for me

Your junior 750 is beating some 750ti's on standard clocks.
I think it's time to implement a command line switch for the gpu-memspeed and the gpu-core clock. Some of the algorithms needs a good memoryspeed/corespeed factor, and some of the cards are not configured optimal. I had a quick look and found support in the NVIDIA api to adjust the clocks.. Will have a look when I get back from my vacation..

In the north east thailand:

1 hour of Thai-massage costs        0.012641 BTC
1 bottle of 40% thai whiskey costs 0,0088487 BTC
1 noudlesoup meal with meat and clean ice water in the resturant costs 0,0029495  BTC

nice ...

would be ideal if we could manipulate the clocks ( mem and core ) from the commandline ...

sounds very cheap over there ... and very nice ...

might even be able to buy property too with btc ... i wonder ...

...

#crysx

Linux command line to change clocks on my laptop, GTX850M, this is in my launch script.
optirun nvidia-settings -c :8 -a [gpu:0]/GPUGraphicsClockOffset[2]=80 -a [gpu:0]/GPUMemoryTransferRateOffset[2]=300

If you dont run optimus/bumblebee to switch on the second graphics card you dont need optirun, :8 is the display number, you need to have coolbits set in your config for it to work.

[Namiks]

Is there a specific version of Cuda I should have installed?

[Schleicher]

Is there a specific version of Cuda I should have installed?

If you just want to use the binaries you only need the current driver.
If you want to compile it yourself you need the CUDA Toolkit 6.5.

[tbearhere]

Cool... hope your enjoying yourself ... opps  you are. 

[tbearhere]

1 bottle of 40% thai whiskey costs 0,0088487 BTC

Suddenly, I want to go to Thailand. I'm afraid I might stay there though.

But thaiwhiskey is made from rice and not potatoes. Doesn't taste as good as what we are used to..
Prefer beer.

Today I ate a bigmac at McDonald's 0,01453715 BTC.

More expensive than 1 hour of thai-massage.

And in the tourist areas you can multiply the prices by 3-5

sp could you ask them how much electricity cost?  plz 

[z0n0]

Pattaya brings some crazy memories
Thai massaaaaaaaaaaaaage

[Namiks]

Is there a specific version of Cuda I should have installed?

If you just want to use the binaries you only need the current driver.
If you want to compile it yourself you need the CUDA Toolkit 6.5.

Thanks!

[Grim]

Regarding cryptonight:

for the ccminer cryptonight kernel it seems like the level 2 cache is a big deciding factor.

750ti   / 2mb l2 cache
960     / 1mb l2 cache
970     / 1.75mb l2 cache
980     / 2mb l2 cache
Titan X / 3mb l2 cache (anyone got one yet  )



But how come the amd cards are that fast with only 768kb for the 280x or 1mb for the 290x??
Is memory bandwidth and latency that much more important for this algo?

[pallas]

Regarding cryptonight:

for the ccminer cryptonight kernel it seems like the level 2 cache is a big deciding factor.

750ti   / 2mb l2 cache
960     / 1mb l2 cache
970     / 1.75mb l2 cache
980     / 2mb l2 cache
Titan X / 3mb l2 cache (anyone got one yet  )



But how come the amd cards are that fast with only 768kb for the 280x or 1mb for the 290x??
Is memory bandwidth and latency that much more important for this algo?

If I recall correctly, cryptonight uses a 2MB buffer, which means you need MORE than 2MB of cache to fit it entirely and avoid using main gpu ram. Moreover, the miners must work on many cards so they probably make use of gpu ram anyway. Cache helps, but there will be a lot of misses. Thus, cache size and speed matters but so does global memory latency.

[myagui]

What really matters in this case, is memory bandwidth. The GPU miner runs a shitload of threads, and 2MB fits a single thread. I don't think the GPUs would be doing much hashing if running in single thread mode in order to use the cache exclusively, as opposed to using the much slower GPU RAM and executing a very large number of concurrent threads.

That is also why cryptonight CPU mining, you run X threads based on how much cache the CPU has. A CPU with 6MB cache, runs optimally with 3 threads, a CPU with 8MB cache, runs optimally with 4 threads, and so on.

[chrysophylax]

comparing v43 vs. v44 for my gtx750(non-ti) (windows binaries from github)
x15: 1966 vs 1976
x13: 2272 vs 2270
x11: 2886 vs 2883
quark: 5700 vs 5660
qubit: 4418 vs 4419 (with drops)
lyra: 882 vs 881
So, only x15 gain for me

Your junior 750 is beating some 750ti's on standard clocks.
I think it's time to implement a command line switch for the gpu-memspeed and the gpu-core clock. Some of the algorithms needs a good memoryspeed/corespeed factor, and some of the cards are not configured optimal. I had a quick look and found support in the NVIDIA api to adjust the clocks.. Will have a look when I get back from my vacation..

In the north east thailand:

1 hour of Thai-massage costs        0.012641 BTC
1 bottle of 40% thai whiskey costs 0,0088487 BTC
1 noudlesoup meal with meat and clean ice water in the resturant costs 0,0029495  BTC

nice ...

would be ideal if we could manipulate the clocks ( mem and core ) from the commandline ...

sounds very cheap over there ... and very nice ...

might even be able to buy property too with btc ... i wonder ...

...

#crysx

Linux command line to change clocks on my laptop, GTX850M, this is in my launch script.
optirun nvidia-settings -c :8 -a [gpu:0]/GPUGraphicsClockOffset[2]=80 -a [gpu:0]/GPUMemoryTransferRateOffset[2]=300

If you dont run optimus/bumblebee to switch on the second graphics card you dont need optirun, :8 is the display number, you need to have coolbits set in your config for it to work.

tanx ...

will need to try that out once i have some time ...

i run fedora 19 x64 on the work machines - so its changed a great deal from the days of fedoracore ...

will figure it out though ...

btw - would anyone know the 'stable' oc settings for gigabyte 750ti oc lp cards? ...

tanx again ...

#crysx

[chrysophylax]

Is there a specific version of Cuda I should have installed?

If you just want to use the binaries you only need the current driver.
If you want to compile it yourself you need the CUDA Toolkit 6.5.

i still compile with 6.0 ...

only due to the crash issues and 'cannot detect cuda devices' when compiled with 6.5 ...

i understand cuda 7 will have a few more optimized tweaks and stability for compiling ...

waiting for the fedora 21 repo to come out ...

#crysx

[chrysophylax]

1 bottle of 40% thai whiskey costs 0,0088487 BTC

Suddenly, I want to go to Thailand. I'm afraid I might stay there though.

But thaiwhiskey is made from rice and not potatoes. Doesn't taste as good as what we are used to..
Prefer beer.

Today I ate a bigmac at McDonald's 0,01453715 BTC.

More expensive than 1 hour of thai-massage.

And in the tourist areas you can multiply the prices by 3-5

sp could you ask them how much electricity cost?  plz 

i too would be interested in shifting the farm there ... i mean - interested in electricity costs ... cough cough ...

...

#crysx

[sp_]

sp could you ask them how much electricity cost?  plz 

i too would be interested in shifting the farm there ... i mean - interested in electricity costs ... cough cough ...
...
#crysx

Today it was 38 degrees celcius outside. This is not a good place to mine.

[sp_]

i understand cuda 7 will have a few more optimized tweaks and stability for compiling ...
#crysx

cuda 7 is released now. I think I will compile version 45 with cuda 7. need to test if everything works though. The beta version of cuda 7 crashed my fork of ccminer.