Presented by Leo Pleše ScienceUp.org FLOPS Presented by Leo Pleše ScienceUp.org

What is FLOPS? floating-point operations per second FLOP measure of computer performance kFLOPS, MFLOPS, GFLOPS, TFLOPS, PFLOPS, EFLOPS… performance of supercomputers

Where is it used? scientific calculations accuracy (FLOPS better than IPS) kIPS, MIPS, GIPS Fixed-point numbers – integers Floating-point numbers – real numbers

Decimal → binary floating-point −23.65 (10) =− 10111+0.10 1 00 1 2 =− 10111.10 1 00 1 (2)

Floating-point notation (32-bit) - IEEE-754 − 10111.10 1 00 1 2 =− 1.011110 1 00 1 ∙ 2 4 (2) 1 1 1 1 1 1 sign exponent / characteristic mantissa

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