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22 lines
544 B
Plaintext
22 lines
544 B
Plaintext
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SHORT Floating point exceptions
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EVENTSET
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PMC0 RETIRED_INSTRUCTIONS
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PMC1 RETIRED_FP_INSTRUCTIONS_ALL
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PMC2 FPU_EXCEPTION_ALL
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METRICS
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Runtime (RDTSC) [s] time
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Overall FP exception rate PMC2/PMC0
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FP exception rate PMC2/PMC1
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LONG
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Formulas:
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Overall FP exception rate = FPU_EXCEPTIONS_ALL / INSTRUCTIONS_RETIRED
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FP exception rate = FPU_EXCEPTIONS_ALL / FP_INSTRUCTIONS_RETIRED_ALL
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-
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Floating point exceptions occur e.g. on the treatment of denormal numbers.
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There might be a large penalty if there are too many floating point
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exceptions.
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