NVIDIA Kepler (K20) from 134MHash/s to 330MHash/s with CUDA

[psychocoder]

I can't even get it to run. I get unable to load cuda module error. When I try compile the module myself per the instructions...I get this error:

LIBCMT.lib(crt0.obj) : error LNK2019: unresolved external symbol _main reference
d in function ___tmainCRTStartup
a.exe : fatal error LNK1120: 1 unresolved externals

No one can tell me how to fix it. I'm not much for a programmer..

Is your driver up to date? If not please upodate your driver and run the precompiled version.

[1715631133]

1715631133

[1715631133]

1715631133

[1715631133]

1715631133

[supwang]

Is this software only for BTC? can not use for LTC?

[Lacan82]

I can't even get it to run. I get unable to load cuda module error. When I try compile the module myself per the instructions...I get this error:

LIBCMT.lib(crt0.obj) : error LNK2019: unresolved external symbol _main reference
d in function ___tmainCRTStartup
a.exe : fatal error LNK1120: 1 unresolved externals

No one can tell me how to fix it. I'm not much for a programmer..

Is your driver up to date? If not please upodate your driver and run the precompiled version.

Yes my drivers are up to date

[charliemaggot]

@Lacan82 Which card do you have?

@supwang Yes, only BTC.

[Lacan82]

@Lacan82 Which card do you have?

@supwang Yes, only BTC.

GTX 570 and  GT 650m

both have the issue

[Aggrophobia]

i have a GTX Titan and i got only 360MHash/s with 1150mhz gpu clock, is it possible that i get more MHashes with linux ?

changing -gputhreads=x has no effect on the rpcminer :/ it stays by 256

[supwang]

@Lacan82 Which card do you have?

@supwang Yes, only BTC.

Thank you.

[mrb]

So Kepler does have a bit rotate instruction. Finally, Nvidia!

Does it have the equivalent of AMD's bfi_int for another speedup? It does not seem so.

[charliemaggot]

I can't even get it to run. I get unable to load cuda module error. When I try compile the module myself per the instructions...I get this error:

LIBCMT.lib(crt0.obj) : error LNK2019: unresolved external symbol _main reference
d in function ___tmainCRTStartup
a.exe : fatal error LNK1120: 1 unresolved externals

No one can tell me how to fix it. I'm not much for a programmer..

This is a mismatch between the runtime libraries, I guess the project has an error. Make sure you are building a Release/x64 build. In the meantime, can you download the Debug branch from https://github.com/cdmackie/rpcminer-mod/tree/Debug/bin and see if you get the same problems, and post any output.

[psychocoder]

i have a GTX Titan and i got only 360MHash/s with 1150mhz gpu clock, is it possible that i get more MHashes with linux ?

changing -gputhreads=x has no effect on the rpcminer :/ it stays by 256

Can you please add the full name of your grafic card! Our post a link to the shop and product were you have board the gpu. I think there is no GTX Titan with 1150 mhz. I my theoretic calculation a GTX Titan with 1150mHz must get 500+ MHash/s. Please post the first 20 lines output from rpcminer thats help me to see why you Hashrate is so low.

And yes the paramater -gputhreads=x is disabled because the kernel are compiled for 256 threads only.

[Aggrophobia]

of course its oced, normal boost clock 966 (61% ASIC) -> 300MHash/s

http://www.asus.com/Graphics_Cards/GTXTITAN6GD5/#specifications

posting the lines, when i come home

[z1ppy]

has anyone compiled binaries for Windows x64? very interested in this

thanks

[psychocoder]

has anyone compiled binaries for Windows x64? very interested in this

thanks

charliemaggot  created windows binaries:
https://github.com/cdmackie/rpcminer-mod/tree/master/bin

[z1ppy]

has anyone compiled binaries for Windows x64? very interested in this

thanks

charliemaggot  created windows binaries:
https://github.com/cdmackie/rpcminer-mod/tree/master/bin

thank you!

[z1ppy]

So the thread says going from 134 - 330.. I have yet to see any sort of leap from using other miners or rpcminer at default.  I realize that people are working on functions to try to improve that and their efforts are greatly appreciated but, I think all of us would like to see a nice bump in our mining with our nvidia cards.

thoughts?

I saw you mention 560 Ti earlier. That's my card. What hash rate did you see before/after this mod? I'm getting 80-90 mh/s now using GUIMiner w/ rpcminer-cuda.exe but would welcome any additional boost if possible.

If this is about the best I can do with current card, I will likely do a new build + move to Litecoin soon.

thanks

[Signus]

Too bad my gaming rig is a GTX 480 - Fermi. A lot of wasted power there.

Awesome post though, respect for anybody willing to develop in CUDA.

[Aggrophobia]

[Notanon]

Just tried running rpcminer-mod-cuda in Windows 7 32-bit version and it throws up an error, stating that it's not compatible with the version of Window's I'm running. What am I doing wrong?

[charliemaggot]

Just tried running rpcminer-mod-cuda in Windows 7 32-bit version and it throws up an error, stating that it's not compatible with the version of Window's I'm running. What am I doing wrong?

The pre-built binary is 64-bit, for 32-bit you can either build it yourself or download the last pre-built binary files from:

https://github.com/cdmackie/rpcminer-mod/tree/efefff3a8535d0ae544c315cc42e4bf2967c3abd/bin

[Notanon]

Hmm, might have to try and build one myself. Just tried using the last pre-built files and they didn't work.