Nyuzi open GPU focused on GPGPU programming: https://github.com/jbush001/NyuziProcessor https://github.com/jbush001/NyuziProcessor J Core is the opened version

Nyuzi open GPU focused on GPGPU programming: https://github.com/jbush001/NyuziProcessor https://github.com/jbush001/NyuziProcessor J Core is the opened version of SuperH, and thus already has good OS and compiler support: http://0pf.org/j-core.html http://0pf.org/j-core.html J Core is perhaps the main ‘competitor’ to RISC-V: they're both fully open, unencumbered, well-designed architectures suitable for both embedded devices and full systems.