Yep, on some processors with some workloads it really makes a huge difference. As others have commented, there may be significant trade-offs with regard to numerical behaviro.
Some of my observations:
dump1090 loses accuracy below the 7th digit when calculating precision, but consumes 10% less power on the device under test
rtl_433 runs about 35% faster
and acarsdec runs over 400% faster.
On Sun, Sep 1, 2019, 07:11 Albin Stigö <albin.stigo@gmail.com> wrote:
Anyone has experience with the real world impact of using gcc -ffast-math with SDR in general, and GNURadio/Volk in particular?_______________________________________________--Albin SM6WJM
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