Which is fast?

Software Tuning, Performance Optimization & Platform Monitoring

Discussion regarding monitoring and software tuning methodologies, Performance Monitoring Unit (PMU) of Intel microprocessors, and platform updating.

Which is fast?

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Recently, I found a things.

The computiing "a=b*c" and "a+=b*c". In the same size, which runs fast on v3?

I complied it with "icc a.c -xAVX -O3".

"a+=b*c" runs faster than "a=b*c", almost 10 times performance.

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