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by wmf 3818 days ago
Emulation is never going to be fast.
1 comments
rodgerd 3818 days ago
Sure it is. The s390x instruction set is microcode emulation on top of a POWER-derived microarchitecture, just as modern x86 chips are microcode on an underlying microarch.
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filereaper 3817 days ago
Completely wrong. s390x runs on its own dedicated hardware, it is not emulated on POWER. POWER and s390x are completely separate.

source: worked at IBM on their compilers team.

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