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From: John Levine <johnl@taugh.com>
Newsgroups: comp.arch
Subject: Re: Short Vectors Versus Long Vectors
Date: Thu, 25 Apr 2024 12:06:58 -0000 (UTC)
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According to Lawrence D'Oliveiro  <ldo@nz.invalid>:
>On Wed, 24 Apr 2024 23:10:47 -0600, John Savard wrote:
>
>> One of the things that those supercomputers that _do_ include GPUs are
>> praised for is being energy-efficient.
>
>That I never heard before. I heard it in relation to ARM CPUs, yes, GPUs, 
>no.

NVIDIA says their new Blackwell GPU takes 2000 watts, and is between
7x and 25x more power efficient than the current H100, but that's
still a heck of a lot of power. Data centers have had to come up with
higher capacity power and cooling when each rack can use 40 to 50KW.

I mean, my entire house is wired for 24KW and usually runs at more
like 4KW including a heat pump that heats the house.

-- 
Regards,
John Levine, johnl@taugh.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. https://jl.ly