petaflop

noun

peta·​flop ˈpe-tə-ˌfläp How to pronounce petaflop (audio)
plural petaflops
: a unit of measure for the calculating speed of a computer equal to one quadrillion floating-point operations per second
The high-performance computing goal, known as a petaflop—one thousand trillion calculations per second—has long been viewed as a crucial milestone by military, technical and scientific organizations in the United States, as well as a growing group including Japan, China and the European Union.John Markoff

Examples of petaflop in a Sentence

Recent Examples on the Web
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During the experiment, the supercomputer, which uses over 150,000 CPUs to achieve over 442 petaflops of computing power, conducted one of the largest cosmological simulations to date. Chris Young, Interesting Engineering, 3 Oct. 2025 Our research shows that starting at around 10 16 floating-point operations per second (tens of petaflops) the superconducting computer handily becomes more power efficient than its classical cousin. IEEE Spectrum, 15 May 2024

Word History

Etymology

peta- + flop entry 4

First Known Use

1990, in the meaning defined above

Time Traveler
The first known use of petaflop was in 1990

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Cite this Entry

“Petaflop.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/petaflop. Accessed 17 Oct. 2025.

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