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Comment by amalag | Hacker News Reader

Comparing it with a GPU is a natural discussion to have. I believe there is more information on their website to answer the question. But maybe someone else can explain the programming paradigm difference. http://www.adapteva.com/introduction/

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Each of the 64 cores can independently run arbitrary C/C++ code, which is much more flexible than a GPU. Each core has 32KB of local memory, which can also be accessed by the other cores, and there's 1GB of external memory too.

Specs: http://www.adapteva.com/products/silicon-devices/e64g401/

Architecture: http://www.adapteva.com/wp-content/uploads/2012/10/epiphany_...

SDK docs: http://www.adapteva.com/wp-content/uploads/2013/04/epiphany_...

I wonder how much work it would take to port cpuminer to this platform for use in mining bitcoins and litecoins. Probably not worth it for bitcoins with the new FPGA hardware but could be interesting for litecoin depending on the memory access speed to main memory.

You mean the new ASIC hardware? The FPGA are ancient in the crazy world of Bitcoin, although a Litecoin FPGA will emerge in the next few month considering Litecoins value.

Looks like I was about a year behind.

Interesting architecture. I like how well-documented everything is. Usually, either the low-level ISA for accelerator chips is not documented at all (like with GPUs), or detailed documentation is only available under NDA, and only proprietary development tools are available (like with FPGAs).

The topology reminds me of this paper "The Landscape of Parallel Computing Research: A View from Berkeley" http://www.eecs.berkeley.edu/Pubs/TechRpts/2006/EECS-2006-18...

> the low-level ISA for accelerator chips is not documented at all (like with GPUs)

Let me show you the AMD Southern Islands ISA specs: http://developer.amd.com/wordpress/media/2012/10/AMD_Souther...

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