Topic: Bounty for Open-Sourced XMR/Cryptonight GPU Miner Bounties Thread - page 10. (Read 170943 times)

I can't run tsiv's ccminer under win8.1.Driver crash everytime I start ccminer.Any solution?

No command line "-l". Default 40x8. Tried 80x8 and 40x16, but they were worse. Surely Windows can't be nerfing the GPU so badly?

Oh it's you Africanos lol ?

Let's do this miner !

Sent my promised 0.2BTC now  (0.20133330 to be exact)

Due to all the talk about Claymores Closed Source 5% Gpu Miner, I have paid Wolf to release his OpenCL for the Gpu miner on github and have some of the opensource community contribute and himself aswell.

The initial idea was to pay him 10BTC to do the project and release a working miner. I have changed plans due to Wolf being tired + pool owners wanting to cut Claymores 5% which could cause other bigger problems.

I paid him a total of 3BTC to release the code. He will be updating on the main Monero thread in a few hours.

Link from Wolf0: https://bitcointalksearch.org/topic/unfinished-cryptonight-opencl-amd-miner-671784

I'm confused by the title of this thread.

Is the bounty for the miner, or is the bounty for providing a bounty for the miner?

I think smooth was collecting, but if HardwarePal is hiring someone directly then that would probably be okay, so long as the view key is published. Maybe we should check with smooth to see if he's collected anything? It doesn't seem like anyones working on this bounty besides HardwarePal, so my part of the ATI bounty still stands to be claimed by what's being worked on (150 XMR - Keyboard-Mash), and it looks like Tsiv will be claiming the Nvidia miner bounty. Tsiv can you please provide an XMR address and viewkey here?

Is there a pre-existing XMR bounty wallet for the ATI miner?

If not, perhaps HardwarePal could make one, publish the view key?  I don't want to hold it, just send to it.

What do you have in your command line for the "-l" parameter?

If you don't specify the parameter it should be 8x40 by default. The 750 Ti should be hashing in the 200's I believe.

I tried the TDR delay reg edit on my rig, and it now seems to be running stably at 45-50 H/s (40*, 750 ti, diff 15000. I just got my first accepted after about 10 mins so it seems to be working, thanks. Is the hash rate a bit low though?

Pretty sure it's still a TDR issue, the biggest part of the cryptonight core get still run as a single launch and it just might take that 2 seconds and Windows with default TDR delay considers the GPU stuck and does a driver reset. https://bitcointalksearch.org/topic/m.7529269 for a workaround. I plan on looking at splitting the work down, at quick glance it looks like it could be run piece by piece. Will probably hurt performance a bit, have to save and reload the encryption keys on every kernel launch and launches themselves have some overhead. My thought was to make it a cmd line option, allowing the user to decide how much (or if) they want to split it up. Maybe add a few microseconds of sleep between the launches, stop the display freezing for 1+ seconds at a time and make the computer at least semi-usable.

I'm trying to use the pre-compiled ccminer-cryptonight_20140630_r2 ccminer on Windows 8.1 with a GTX750ti and seem to be having some problems getting results.

I am pointing the miner at minexmr as indicated on their website:
http://minexmr.com/
with a batch file as follows:
C:\monero\ccminer-cryptonight_20140630_r2\ccminer.exe -t 1 -d gtx750ti -o stratum+tcp://pool.minexmr.com:7777 -u

-p x

At launch, I get a series of results like:
GPU #0: GeForce GTX 750 Ti, using 40 blocks of 8 threads
Pool set diff to 15000
GPU #0: GeForce GTX 750 Ti, 93.81 H/s
then a popup says display driver stopped responding and has recovered. After that I see results with crazy high numbers of hashes like this:
GPU #0: GeForce GTX 750 Ti, 163611988.12 H/s
interspersed with
'stratum detected new block'
but no accepted results within a half hour check period.

I also tried downloading the previous release, but switching to that one makes the cmd.exe pop up and vanish immediately on my system (Windows 8.1, Driver 337.88). The GTX750ti is not attached to a display output.

Any help appreciated. Not sure what's going wrong.

Cool. Thank you . I checked it few days ago for a release folder, but it seems I missed the '4 releases' button above.

Here's a crazy idea: try checking the project on Github

https://github.com/tsiv/ccminer-cryptonight/releases

^Any windows pre-compiled binaries for the new version I could try?

I added some donation addresses on the project readme on Github for wallets that I have atm, copy&paste:

BTC: 1JHDKp59t1RhHFXsTw2UQpR3F9BBz3R3cs
DRK: XrHp267JNTVdw5P3dsBpqYfgTpWnzoESPQ
JPC: Jb9hFeBgakCXvM5u27rTZoYR9j13JGmuc2
VTC: VwYsZFPb6KMeWuP4voiS9H1kqxcU9kGbsw
XMR: 42uasNqYPnSaG3TwRtTeVbQ4aRY3n9jY6VXX3mfgerWt4ohDQLVaBPv3cYGKDXasTUVuLvhxetcuS16 ynt85czQ48mbSrWX


It is actually explained on the project's front page on Github, I believe

The initial release had the entire algorithm stuffed into a single huge CUDA kernel. Having to do the whole slow algorithm in one go had a tendency to take just a bit over 2 seconds per kernel launch, with 2 seconds being the timeout for Windows getting impatient and going "hmmh, I haven't heard from the GPU in 2 seconds. Must've crashed, better reset the driver." The registry tweak works around the problem by increasing the time that Windows allows the GPU to be "unresponsive" aka stuck running a CUDA kernel.

This has been addressed in later releases, mainly by splitting the single huge kernel into smaller pieces and making parts of the hash faster. The slowest part is still quite slow, taking roughly 1.4 seconds with launch config 8x60 on a 750 Ti but it should stay well within the default 2 second window.


I realize the 8x60 or 8x40 make absolutely no sense, they're something I ran into while trying out different values. The reasonable values would be based on the number of SMM/SMX on the GPU and 32 or 64 threads per block would make a lot of sense. I can't tell exactly why performance takes a dive if you try 64x5 for example, it should be a very good value to start at. Might have something to do with the huge amount of random global memory access in the second major loop of the algo, trying to do more work in parallel bottlenecks at the memory access?

Good news is that I've since modified 2 of the 3 main loops to use 8 parallel threads per hash as opposed to the original 1 thread per hash. So essentially 8x60 leads to running 64 threads per block for those two loops. Still working on the last loops, it does seem a fair bit harder to make it more parallel.

I was finally able to get it working on ubuntu 14.04. I just followed the tutorial below to setup cudaminer then compiled ccminer and it works great now.

Here is the tutorial I found incase anyone else has trouble.
http://d3adbra1n.wordpress.com/2014/05/03/cuda-miner-installation-on-a-fresh-ubuntu-14-04-lts/

I'm still getting the fastest hashes using smaller thread count over many blocks vs more threads over lower block count. It's been very stable tho with no crashing at all as it hashes away.

"Bounty for Open-Sourced XMR/Cryptonight GPU Miner Bounties Thread"

lol

Bounty for open-sourced gpu miner bounties thread?