FLOPS means floating point operations per second -- an approximate measure of a computer's processing speed.
- Megaflops means one million FLOPS, and
- Gigaflops means 1000 million FLOPS.
- teraflops means 1012 FLOPS. The most powerful supercomputers have speeds measured in teraflops.
- Petaflops means 1015 FLOPS, or a million gigaflops.
- ZettaFLOP means 1021 FLOPS
FLOPS, like MIPS, are arguably not that useful as a benchmark for modern computers because there are many other factors in computer performance other than raw floating-point computation, such as interprocessor communication, cache coherence, and the memory hierarchy.
However, for purely mathematical calculations, such as analysis of data, the FLOPS measurement is effective.
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