The one really big difference between these two is scale: Adapteva is aiming for 40 times more cores than Tilera, which is moving up to 100 cores in their latest family. Whether the Tilera coherency scheme can survive an order of magnitude growth remains to be seen. On the other hand, the Adapteva scheme is best suited to the types of programs associated with DSP algorithms, where tight tasks focus on local data until done. The simplicity of their flat memory would break down given more general programs and data traffic, so it’s not a panacea for all programming.
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