¡@
c++ Programming Glossary: gflopshow to achieve 4 FLOPs per cycle http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle @ 4.4 GHz. Theoretical SSE peak is 4 flops 4.4 GHz 17.6 GFlops . This code achieves 17.3 GFlops not bad. Output 8 threads 10000000.. is 4 flops 4.4 GHz 17.6 GFlops . This code achieves 17.3 GFlops not bad. Output 8 threads 10000000 iterations Compiled with.. Theoretical SSE peak is 4 flops 4 cores 4.4 GHz 70.4 GFlops. Actual is 65.5 GFlops . Let's take this one step further. AVX.....
how to achieve 4 FLOPs per cycle http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle x addmul x y n t stoptime t printf addmul t .3f s .3f Gflops res f n t double n t 1e9 x return EXIT_SUCCESS Compiled with.. on an Intel Core i5 750 2.66 GHz addmul 0.270 s 3.707 Gflops res 1.326463 i.e. just about 1.4 flops per cycle. Looking at.. run just for a few seconds though gcc O2 march nocona 5.6 Gflops out of 10.66 Gflops 2.1 flops cycle cl O2 openmp removed 10.1..
|