4 ms·

In the same vein, I'd be curious how much energy gets consumed by HFT.

• wglb 8y ago
  And how much by machinery to run advertising?
  • nimos 8y ago
    Not to mention all the extra CPU load the tracking and JS spam causes on everyone's phones and computers.
  • pbhjpbhj 8y ago
    There's a large overlap between serve farms and energy use backed-by/for marketing.
  • jerkstate 8y ago
    you're not going to hear the media complaining about that, though
• monochromatic 8y ago
  I would think far less. HFT isn’t intentionally computationally expensive.
  • foobarchu 8y ago
    And the HFT industry is incentivized to use as little processor time as possible, and thus as little power as possible.
    • gowld 8y ago
      That's not true. They'll take a 400W 10GHz CPU over a 5mW 1 GHz CPU every time, if it generates better financial returns.
      • ethbro 8y ago
        Parent was referring to latency optimization, I believe. But I'd assume most of those folks have ML / other slower models constantly churning away in the background, even if their HFT reactions are highly tuned and simpler.
    • perl4ever 8y ago
      My impression is that to the extent that HFT is about relative speed, competition can't reduce power usage.
• lallysingh 8y ago
  Not very much. A handful of machines per exchange colo, for each of a few hundred orgs? Probably about as much power as a small-midsize college, if I were to guess?