Exascale computing represents the latest milestone in the evolution of modern supercomputers—powerful machines capable of performing calculations at speeds currently unachievable using any other technology.
Exascale supercomputers are machines that operate at the exaflop level. The “exa” prefix stands for 1 quintillion, which is equivalent to 1 x 10^18 — or 1 followed by 18 zeros. Flop stands for “floating-point operations per second,” a type of calculation used to benchmark computers for comparison.
This means that an exascale computer is capable of processing at least 1 quintillion floating-point operations per second. By comparison, most personal computers operate in the teraflop range (usually around 5 teraflops), performing approximately 5 trillion (5 x 10^12) floating-point operations per second.
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