←back to thread

261 points tosh | 3 comments | | HN request time: 0s | source
Show context
yapyap ◴[] No.42068374[source]
> But it turns out that if you IPC 1TB of video per second on AWS it can result in enormous bills when done inefficiently.

that’s surprising to.. almost no one? 1TBPS is nothing to scoff at

replies(1): >>42068504 #
1. blibble ◴[] No.42068504[source]
in terms of IPC, DDR5 can do about 50GB/s per memory channel

assuming you're only shuffling bytes around, on bare metal this would be ~20 DDR5 channels worth

or 2 servers (12 channels/server for EPYC)

you can get an awful lot of compute these days for not very much money

(shipping your code to the compressed video instead of the exact opposite would probably make more sense though)

replies(1): >>42070033 #
2. pyrolistical ◴[] No.42070033[source]
Terabits vs gigabytes
replies(1): >>42072147 #
3. blibble ◴[] No.42072147[source]
multiply 50 gigabytes * 20 and tell me what you get

pro-tip: it's quite a bit bigger than a terabit