SHORT Double Precision MFLOP/s EVENTSET PMC0 SSE_RETIRED_ADD_DOUBLE_FLOPS PMC1 SSE_RETIRED_MULT_DOUBLE_FLOPS PMC2 CPU_CLOCKS_UNHALTED METRICS Runtime (RDTSC) [s] time Runtime unhalted [s] PMC2*inverseClock DP [MFLOP/s] 1.0E-06*(PMC0+PMC1)/time DP Add [MFLOP/s] 1.0E-06*PMC0/time DP Mult [MFLOP/s] 1.0E-06*PMC1/time LONG Formulas: DP [MFLOP/s] = 1.0E-06*(SSE_RETIRED_ADD_DOUBLE_FLOPS+SSE_RETIRED_MULT_DOUBLE_FLOPS)/time DP Add [MFLOP/s] = 1.0E-06*(SSE_RETIRED_ADD_DOUBLE_FLOPS)/time DP Mult [MFLOP/s] = 1.0E-06*(SSE_RETIRED_MULT_DOUBLE_FLOPS)/time - Profiling group to measure double SSE FLOPs. Don't forget that your code might also execute X87 FLOPs.