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Topic: RaspberryPi litecoin CPU and GPU miner bounty - page 2. (Read 19259 times)

legendary
Activity: 1372
Merit: 1003
LTC donation address - LKQ9ZKKBNHYcPjSkSK2GnkbYb7PeFgnSj7

BTC donation address - 1JooT9sKj3YG2k8i6MrH5DTo72g8rF7gKb

NMC donation address - NCvUBqH8bPGwybfWHWycF8dYiLYb8gg3VN

On the case the project not getting developed all donations will go to projects on http://litebit.co/
legendary
Activity: 1372
Merit: 1003
The Raspberry Pi has pretty much the same CPU as my iPhone 3G, only running at a higher clock speed.
On that CPU, the current version of cpuminer can do about 100 hashes/second at 412 MHz, so on the 700-MHz processor of the Pi (assuming everything else constant, which is almost certainly not the case) it should do less than 200 h/s. Of course this is using a C implementation of scrypt, but even if someone wrote optimized code for the ARM I doubt it would be possible to reach 1 kh/s.

As regards the GPU, it doesn't support OpenCL. It does support OpenGL ES, but that's not a viable option for GPGPU computing. (source)

Thanks I've also realised the Broadcom GPU doesn't have a "Cuda" or a "Catalyst" so would need Broadcoms help.  Anyway I've posted the idea in the RaspberryPi forum to see what developers interested in the board think.

The only positive thing I read from that link was -

"its a complete implementation of OGL ES2.0, so does support shaders. What you do with them is up to you!"
hero member
Activity: 848
Merit: 507
The Raspberry Pi has pretty much the same CPU as my iPhone 3G, only running at a higher clock speed.
On that CPU, the current version of cpuminer can do about 100 hashes/second at 412 MHz, so on the 700-MHz processor of the Pi (assuming everything else constant, which is almost certainly not the case) it should do less than 200 h/s. Of course this is using a C implementation of scrypt, but even if someone wrote optimized code for the ARM I doubt it would be possible to reach 1 kh/s.

As regards the GPU, it doesn't support OpenCL. It does support OpenGL ES, but that's not a viable option for GPGPU computing. (source)
legendary
Activity: 1372
Merit: 1003
ill chip in 200 ltc if you give me an addr

Before I can take donations we need more interest of a bounty of at least £100 and potential developers who can program its GPU (not easy I think and a £100 bounty may seem pity-full?).  The LTC CPU miner can probably be recompiled (we just need it optimising for the ARM instruction set) and maybe the "Reaper" program can be adjusted for its GPU and DSP?  I think all this will be eventually done anyway as the RaspberryPi is a development board I was just thinking a nice bounty might speed up the development.  As the RaspberryPi only cost £30 and runs on less than 4W so a dedicated optimised easy to use dedicated mining software for the board may see a lot of interest from hobby miners wanting to get a board or two. 
full member
Activity: 182
Merit: 100
How about we chip in on getting more companies involved in making these mini power efficient computers?  What do we have now, a 2 year wait list?  Good luck buying in bulk ANYTIME soon.  I'm all for development though, if someone wants to set up a pool, I'll chip in more as it gains relevance. 
member
Activity: 89
Merit: 10
ill chip in 200 ltc if you give me an addr
legendary
Activity: 1372
Merit: 1003
Is anyone interested in chipping into a bounty for someone to develop an optimised LTC miner for the RaspberryPi that mines on its ARM1176JZF-S CPU and its Broadcom VideoCore IV GPU ?


LTC donation address - LKQ9ZKKBNHYcPjSkSK2GnkbYb7PeFgnSj7

BTC donation address - 1JooT9sKj3YG2k8i6MrH5DTo72g8rF7gKb

NMC donation address - NCvUBqH8bPGwybfWHWycF8dYiLYb8gg3VN


On the case the project not getting developed all donations will go to projects on http://litebit.co/
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