Topic: [Bounty] Scrypt-jane CGMINER - page 2. (Read 7076 times)

With AWS instances, it would take way more than a few grand to launch a 51% attack.

The difference is significant.  Unless you're using a 4-processor Xeon E5-2670 server as the point of comparison.

Do you have any ideas about the difference from CPU to GPU?

There is already GPU miners running Yak. It's just such a derpy diff that it's not worth it even running GPU mining when you can just throw together a AWS instance and 51% it for a few $1.000.

BTW - scrypt-jane isn't a hashing algorithm.  It's a software library that supports several different scrypt-based hashing algorithms, including scrypt+Salsa20/8 as used in Litecoin and scrypt+ChaCha20/8 as used in Yacoin.  The library is here:

https://github.com/floodyberry/scrypt-jane

Assuming the OP wants cgminer for Yacoin specifically, a change in the title of the thread is probably warranted, as "scrypt-jane" doesn't refer to the hashing algorithm in Yacoin.  It's ambiguous which scrypt-derived algorithm one is referring to if you say "scrypt-jane".

The problem here is i dont think that OpenCL code for scrypt-jane exists out there. IIRC the kernels for sha256 and litecoin type scrypt was based on pre-existing code developed for other purposes then adapted for mining...

So if someone were to write from scratch, maybe have some influence from litecoin-scrypt, id assume it easily taking up 10 - 20 hours minimum for an experienced OpenCL developer.

1) Now if said developer is into mining, 5k YAC is pocketchange compared to what they get by not sharing.
2) If said developer is not a miner, then ud need to pay a lot more... maybe like  10 - 20 BTC easily. Thats assuming their time to be worth 1 BTC/hour.

So, find person that fits category 1 and cares more about community than personal goal... Then theyd not care much about the bounty anyways.

Having said that i can add in 2k YAC to the cause, to be in your "donators" category... i am not that proficient in C/C++, but i can help with testing early code.

This project needs to be split into 2 tasks:-

1) The cgminer side of things. The side that validates the nonce returned by the kernel. This should be fairly easy, given that the c code for it exists.
2) The OpenCL kernel... this would probably be a lot more complec. Way over my pay grade. Would need some sample test cases to help with development, especially if the developer is non-miner.

Pointed here by my buddy. I could do this; but at .0006 BTC per YAC.... is it really worth it?

Is that a bounty (of whatever amount, 5000 YAC is just too low) to whoever implements it in a provable way, or actually releases it? 

Probably people without OpenCL development experience aren't going to be "in the running" for a bounty of this type.



The bounty amount is a bit of a joke, considering the actual number of hours needed to port scrypt+chacha/keccak(N,1,1) to the cgminer kernel and the resulting profitability using it for mining rather than releasing it.  Now, make it a 50 BTC bounty and we'll just see what springs forth..

Its not so trivial if you don't have any experience coding OpenCL kernels

if i had more of any other coin i'd gladly pay to get first crack at it 

You should probably offer a coin that's actually worth something Specially since if this became available to the general public, the whole premise of YAC would be defeated, and it would become even more worthless

My skills are lacking in the coding section, and i am also not a rich man. ergo i made it a community request. Though if you really were capable of such a feat , i believe you would have done so already due to what you would "rake in".

I bet it's already been done, why would anyone want to release that? 5000YAC is a joke of bounty compared to what they could be pulling in every day. It should be trivial to accomplish, I'd have done it ages ago if I didn't have a bunch of final exams next week to study for.

5000 YAC to whoever implements scrypt-jane on cgminer. Donations are welcome, even better for the donators coz we get to "test drive it for a few days to "make sure its bug free FOR THE COMMUNITY"