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Hacker News on Rails, powered by React on Rails Pro. Open the source on GitHub by ShakaCode.

Commit 06fc0df

Rendered at 09:12:18 GMT+0000 (Coordinated Universal Time) with Rails + React on Rails RSC.

Meta's GB{2,3}00 Cluster (engineering.fb.com)

83 points by stokedmartin 1d ago | 35 comments

xeubie 11h ago
It seems that Meta didn't mention one aspect of their "next-generation" AI training system: their incompetent web crawler hammers websites while completely ignoring robots.txt. Meta's 57.141.0.0/24 made up about 90% of all requests to my server this past week, and it didn't stop after I blocked it. They continue to make a request every 2 seconds despite me responding with a 403 every time. Truly an engineering marvel that Meta has bestowed upon us.

edit: I just checked and they are back to hammering my server at 105 requests per minute. These are the Meta-owned ranges I'm blocking now, in case it helps anyone: 57.141.0.0/16, 57.142.0.0/15, 57.144.0.0/14, 57.148.0.0/15

imawakegnxoxo 1h ago
This sounds suspiciously close to what used to be called a DDoS attack

So they can do something which used to be considered stalking

Every single thing this company does would get an individual thrown in jail

Why do the zuck and his goon squad get a free pass to literally be criminals?

jacquesm 10h ago
I've blocked Meta, OpenAI and Anthropic and yet they seem to find ways to get back in. It's pretty annoying.
ctoth 11h ago
nft add table inet filter

nft add set inet filter meta_crawl '{ type ipv4_addr; flags interval; }'

nft add element inet filter meta_crawl '{ 57.141.0.0/24 }'

nft add chain inet filter input '{ type filter hook input priority 0; }'

nft add rule inet filter input ip saddr @meta_crawl tcp dport {80,443} reject with tcp reset

xeubie 10h ago
I did finally block them at the firewall level last night. They are constantly trying to connect anyway.
titzer 10h ago
When you're a celebrity, they let you do it.
marcyb5st 4h ago
Poison the responses with massive ai slop dumps.
peddling-brink 3h ago
Make them block you.
emmelaich 7h ago
maybe just drop them rather than reject with tcp reset
figmert 11h ago
> incompetent

I think that's not incompetence, I think that's by design.

solyin 10h ago
How? What's the incentive structure for that design? There are no extra ads to be displayed here, so how does Meta get value from that design? Seems way more likely to be incompetence in my world view. Explain why that design is superior!
nixon_why69 7h ago
Someone puts a high number of pages crawled per minute in their PSC. Doesn't matter if they're 403s.
zamadatix 8h ago
There are no extra ads to be had even by scanning sites with a robots.txt that allows them, because the value of pages could never have been in displaying ads but must have resided in the information on the pages itself.
abirch 9h ago
With Muse, people can enter their bank account information and medical information so that it can work hard for them. For this, they need a lot of training material.
schleck8 10h ago
LLM training data
water-drummer 5h ago
Reverse Hanlon's Razor
imawakegnxoxo 1h ago
Their apps and their hardware might be gorefests but you best believe their tracking software is rock solid with no possible failure modes
alex1138 9h ago
(Rhetorical question) Who would you trust scraping your website? Google, for who among all their issues I haven't seen complaints of "Google is ddosing the web", both pre and post LLM

Or Meta, run by someone of Zuckerberg's character that wants to dominate everything and it shows by how many requests per minute? He's one of the reasons sites now have to implement bot blocking technologies

maxlin 5h ago
bet it was written in PHP
jgalt212 10h ago
I didn't want to have to put everything behind cloudflare, but this sort of nonsense made it the least bad path forward for us.
sgvwthry 11h ago
Posting this two days before earnings seems to indicate that there is going to be some bad capex news.
downrightmike 5h ago
-10B on VR, -(The Compny's Future) on AI
zer00eyz 10h ago
Ya dont say.

Negative Free Cash Flow are the words every one on HN needs to learn.

Every thing before now, you will look back upon as the happy time. When every year storage, ram and compute grew and the prices went down. Your cloud provider made so much money they paid cash for hardware.

Now they borrow at 8% and net margins on ram/storage were around $0.10/GB ... today they sit at over a dollar. (SEE micron's s10's if you want to check the math on that).

Forget circular financing, its a circular firing squad because your going to have to figure out where the hell your going to run any of your gear.

4x to 10x for ram +8% for financing +30percent AWS margins. Good luck everyone its gonna get rough out there.

le-mark 10h ago
Or hyperscalers revenue will continue to disappoint, there is no $60 trillion market for ai and there will be a glut of capacity for years to come!
jacquesm 10h ago
The capital (heh) mistake in the whole assumption that these companies are worth that much is that they'll crash the economy in their zeal to get there. And when the economy goes down the drain so do the expenditures because in the end the companies that could spend money on AI are taking that money out of the economy to put it in the pockets of a tiny fraction of society. You can only do that if you are willing to leave the rest without food on the table and that sort of move is simply not very wise.
vkou 5h ago
There is definitely a $60 trillion market for AI, just not by next year.
jacquesm 10h ago
I am very lucky to have stocked up on RAM before this happened (256G) but I wished I had doubled or quadrupled that, an upgrade simply isn't going to happen now.
islewis 10h ago
> The Ariel variant of GB200 NVL72 pairs each NVIDIA Blackwell GPU with an NVIDIA Grace CPU and 2x NVIDIA ConnectX-7 400G NICs at a 1:1 CPU-to-GPU ratio, letting us deploy 800G of I/O per GPU earlier than the rest of the industry

If the 1:1 ratio was purely for I/O (big assumption, very likely wrong), I am curious why they did not just go with ConnectX-8? Other hyperscalers have been shipping NVL72 clusters with ConnectX-8 on roughly the same timeline, and it offers the same 800Gb/s of throughput.

Managing a custom Ariel variant (which seems to be a Meta-only build) is not insignificant complexity, I wonder if they had another need for that 2x CPU-GPU ratio in their workloads relative to the stock GB200s.

EDIT: I looked, the gb200s NVL72s never have shipped with CX-8s, I made this up. This decision could have totally been due to compute availability and timing

wmf 5h ago
IIRC one of the analysts said 1:1 CPU:GPU was for recommendation algorithms and 1:2 is better for LLMs.
alberth 11h ago
Actual title: ”Inside Prometheus: Meta’s Journey to a Gigawatt-Scale Supercluster”
lmc 11h ago
Is this one of the pilot models they claim R&D tax credits for?

https://news.ycombinator.com/item?id=49921118

markhahn 11h ago
shell glob rather than RE? what's the world coming to!
ma2kx 11h ago
Imagine your job is just replacing millions of Dollars worth of hardware every day. I mean there must be a reason the hold 8 GPUs per rack spare.
solyin 10h ago
Yes the reason is they're pushing the GPUs hard so that they fail, and having hot spares saves the job until helping hands can go replace the bad component.
boredatoms 10h ago
Theres a ton of people working at (neo)clouds doing exactly that