This seems to be a design flaw, not an implementation flaw. Summary: Ethereum's proof-of-work function(called Dagger) is designed to be memory-hard, but someon

This seems to be a design flaw, not an implementation flaw. Summary: Ethereum's proof-of-work function(called Dagger) is designed to be memory-hard, but someone pointed out that it should be designed to be sequentially-memory-hard instead. Dagger is not, so you can parallelize the computation.