this post was submitted on 10 Mar 2024
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Climate - truthful information about climate, related activism and politics.

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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world.  About 1C of total warming.  Second chart:  about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability.  Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases.  About 0.5C of cooling with large error bars from SO2.

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[–] Zaktor@sopuli.xyz 19 points 8 months ago* (last edited 8 months ago) (7 children)

de Vries, who now works for the Netherlands’ central bank, estimated that if Google were to integrate generative A.I. into every search, its electricity use would rise to something like twenty-nine billion kilowatt-hours per year. This is more than is consumed by many countries, including Kenya, Guatemala, and Croatia.

Why on earth would they do that? Just cache the common questions.

It’s been estimated that ChatGPT is responding to something like two hundred million requests per day, and, in so doing, is consuming more than half a million kilowatt-hours of electricity. (For comparison’s sake, the average U.S. household consumes twenty-nine kilowatt-hours a day.)

Ok, so the actual real world estimate is somewhere on the order of a million kilowatt-hours, for the entire globe. Even if we assume that's just US, there are 125M households, so that's 4 watt-hours per household per day. A LED lightbulb consumes 8 watts. Turn one of those off for a half-hour and you've balanced out one household's worth of ChatGPT energy use.

This feels very much in the "turn off your lights to do you part for climate change" distraction from industry and air travel. They've mixed and matched units in their comparisons to make it seem like this is a massive amount of electricity, but it's basically irrelevant. Even the big AI-every-search number only works out to 0.6 kwh/day (again, if all search was only done by Americans), which isn't great, but is still on the order of don't spend hours watching a big screen TV or playing on a gaming computer, and compares to the 29 kwh already spent.

Math, because this result is so irrelevant it feels like I've done something wrong:

  • 500,000 kwh/day / 125,000,000 US households = 0.004 kwh/household/day
  • 29,000,000,000 kwh/yr / 365 days/yr / 125,000,000 households = 0.6 kwh/household/day, compared to 29 kwh base
[–] kibiz0r@midwest.social 2 points 8 months ago (3 children)

Just cache the common questions.

There are only two hard things in Computer Science: cache invalidation and naming things.

[–] boonhet@lemm.ee 4 points 8 months ago (1 children)

You mean: two hard things - cache invalidation, naming things and off-by-one errors

[–] kibiz0r@midwest.social 3 points 8 months ago

Reminds me of the two hard things in distributed systems:

  • 2: Exactly-once delivery
  • 1: Guaranteed order
  • 2: Exactly-once delivery
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