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Flops
Jul 20, 2023
Floating point benchmark to give your MFLOPS rating
flops.c is a C program which attempts to estimate your system’s floating- point ‘MFLOPS’ rating for the FADD, FSUB, FMUL, and FDIV operations based on specific ‘instruction mixes’ discussed below. The program provides an estimate of PEAK MFLOPS performance by making maximal use of register variables with minimal interaction with main memory. The execution loops are all small so that they will fit in any cache. The flops.c execution modules include various percent weightings of FDIV’s from 0 to 25 FDIV’s so that the range of performance can be obtained when using FDIV’s. FDIV’s, being computationally more intensive than FADD’s or FMUL’s, can impact performance considerably on some systems.
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