what is petascale
Definitions for petascale. Here are all the possible meanings and translations of the word petascale. Wiktionary(0.00 / 0 votes)Rate this definition: petascale(Adjective) A metric for objects on the scale of quadrillions (10 or 1,000,000,000,000,000) of elements. Most often used for computer systems; a petascale computer system operates at speeds measured in petaflops and has memory measured in petabytes.