(computing) Either of two units of measure of the calculating speed of a computer:
A metric for objects on the scale of quadrillions (1015 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.
a quadrillion (10¹⁵) floating point operations per second.
1,125,899,906,842,624 (2⁵⁰) floating point operations per second.