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KHMan <> writes:
>> rk4-unroll.lua with LuaJIT2: 0m4.391
>> C code with GSL lib (opt -O2): 0m20.094
> Sorry to barge in, it is a worrying difference. One thing is bugging me:
> Is the C code running SSE2? IIRC gcc -O2 does not normally enable SSE2.

It will enable it by default when it thinks it's possible.

It's always a good idea to use "-march=native" if you're looking for the
best performance...


Mad, adj. Affected with a high degree of intellectual independence; not
conforming to standards of thought, speech, and action derived by the
conformants [sic] from study of themselves; at odds with the majority; in
short, unusual. It is noteworthy that persons are pronounced mad by officials
destitute of evidence that they themselves are sane.