You can always have same perf (assuming //izable jobs) just by adding more cores. At perf parity, ARM is ~half power consumption.
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Replying to @RichFelker @travisgoodspeed
That's what everyone thinks. Not people who know CPUs, of course, but everyone else.
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Replying to @ErrataRob @travisgoodspeed
Rich Felker Retweeted Matthew Prince
Apparently it's what
@Cloudflare thinks.https://twitter.com/eastdakota/status/976560820611031040?s=20 …Rich Felker added,
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That's because it's a network processor that includes fixed-function accelerators for crypto and compression that would otherwise be done in software on Intel CPUs.
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I've seen similar results on big compile jobs, no acceleration. Need to test myself sometime.
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Replying to @RichFelker @ErrataRob and
My semi-educated guess is that you can do way better than 1/2 power consumption (maybe as low as 10%) just by using a larger array of simpler cores rather than higher-end out-of-order ARMs.
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Replying to @RichFelker @ErrataRob and
Of course if Intel made simple cores they could be competitive here too, but they abandoned the Atom microarchitecture that was the closest thing they had (and likely their only hope for making chips unaffected by Spectre).
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I want to see a server using a Xeon Phi (72 Atom cores) do a Linux compile. The massive floating point logic may make things inefficient, but it'd still be fun to try.
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Wow interesting. I had no idea Larrabee was non-OOOE. I might have to pick one up as a better Spectre-free option than the S1260 I've got now.
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That's the old stuff. The latest (Knight's Landing) is OoO, using the newer Airmont cores that are OoO. It turns out that some OoO is still more power efficient than none at all.
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Right, but I specifically want non-OOOE. Thus looking at old stuff.
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Replying to @RichFelker @ErrataRob and
Sadly it looks like the old stuff was never produced in significant commercial quantities...
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