Yeah, the tricky bit is it's not just a new language but also laying out your data in a new way that compatible with vectorization/etc. Modern OO/etc techniques

Yeah, the tricky bit is it's not just a new language but also laying out your data in a new way that compatible with vectorization/etc. Modern OO/etc techniques love to litter pointers to random places in memory at nearly every step. It's partly what made the PS3 so hard to write for, the SPUs only have 256kb of directly addressable memory, everything else is DMA'd. That said when you had your code+data fitting in 256kb it screamed everywhere else as well since you fit in L1+L2 cache neatly.