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36 lines
1.3 KiB
Plaintext
36 lines
1.3 KiB
Plaintext
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SHORT Single Precision MFLOP/s
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EVENTSET
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FIXC0 INSTR_RETIRED_ANY
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FIXC1 CPU_CLK_UNHALTED_CORE
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FIXC2 CPU_CLK_UNHALTED_REF
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PMC0 FP_COMP_OPS_EXE_SSE_FP_PACKED
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PMC1 FP_COMP_OPS_EXE_SSE_FP_SCALAR
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PMC2 FP_COMP_OPS_EXE_SSE_SINGLE_PRECISION
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PMC3 FP_COMP_OPS_EXE_SSE_DOUBLE_PRECISION
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METRICS
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Runtime (RDTSC) [s] time
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Runtime unhalted [s] FIXC1*inverseClock
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Clock [MHz] 1.E-06*(FIXC1/FIXC2)/inverseClock
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CPI FIXC1/FIXC0
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SP [MFLOP/s] 1.0E-06*(PMC0*4.0+PMC1)/time
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Packed [MUOPS/s] 1.0E-06*PMC0/time
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Scalar [MUOPS/s] 1.0E-06*PMC1/time
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SP [MUOPS/s] 1.0E-06*PMC2/time
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DP [MUOPS/s] 1.0E-06*PMC3/time
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LONG
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Formulas:
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SP [MFLOP/s] = 1.0E-06*(FP_COMP_OPS_EXE_SSE_FP_PACKED*4+FP_COMP_OPS_EXE_SSE_FP_SCALAR)/runtime
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Packed [MUOPS/s] = 1.0E-06*FP_COMP_OPS_EXE_SSE_FP_PACKED/runtime
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Scalar [MUOPS/s] = 1.0E-06*FP_COMP_OPS_EXE_SSE_FP_SCALAR/runtime
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SP [MUOPS/s] = 1.0E-06*FP_COMP_OPS_EXE_SSE_SINGLE_PRECISION/runtime
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DP [MUOPS/s] = 1.0E-06*FP_COMP_OPS_EXE_SSE_DOUBLE_PRECISION/runtime
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-
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The Nehalem has no possibility to measure MFLOPs if mixed precision calculations are done.
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Therefore both single as well as double precision are measured to ensure the correctness
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of the measurements. You can check if your code was vectorized on the number of
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FP_COMP_OPS_EXE_SSE_FP_PACKED versus the FP_COMP_OPS_EXE_SSE_FP_SCALAR.
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