I'm not sure about REX, but Esperanto is pretty far away from greenarrays. From what I got out of their talk at the latest Risc-V workshop[3] (video[1], slides[

I'm not sure about REX, but Esperanto is pretty far away from greenarrays. From what I got out of their talk at the latest Risc-V workshop[3] (video[1], slides[2]), they're going for the big high-performance end of the spectrum. The chip they were talking about is supposed to have 16 64-bit OoO Risc-V cores and 4096 RV64GC cores with vector units connected by some sort of network on chip. [1] https://www.youtube.com/watch?v=f-b4QOzMyfU https://www.youtube.com/watch?v=f-b4QOzMyfU [2] https://content.riscv.org/wp-content/uploads/2017/12/Tue1136-Industrial-Strength-High-Performance-RISC-V-Processors-for-Energy-Efficient-Computing-Ditzel-Esperanto.pdf https://content.riscv.org/wp-content/uploads/2017/12/Tue1136... [3] https://riscv.org/2017/12/7th-risc-v-workshop-proceedings/ https://riscv.org/2017/12/7th-risc-v-workshop-proceedings/