←back to thread

Lenovo Has a CXL Memory Monster with 128x 128GB DDR5 DIMMs

(www.servethehome.com)
28 points addaon | 2 comments | 20 Nov 24 02:53 UTC | HN request time: 0.419s | source
Show context
tuananh ◴[20 Nov 24 04:24 UTC] No.42190811[source]▶
it's 16TB of DDR5 btw
replies(1): >>42190905 #
metadat ◴[20 Nov 24 04:50 UTC] No.42190905[source]▶
Yes, 128x128.

Good for a database, maybe.

What else?

replies(6): >>42191283 #>>42191285 #>>42191559 #>>42191737 #>>42191960 #>>42192376 #
1. HeatrayEnjoyer ◴[20 Nov 24 08:51 UTC] No.42191960[source]▶
A half dozen GPT-4 instances
replies(1): >>42195659 #
2. metadat ◴[20 Nov 24 16:39 UTC] No.42195659[source]▶
LLM inference processors (GPUs) don't use DDR, it uses special, costly stacked HBM ram soldered to the board.

I tested out running Llama on a 512GB machine, it's rather slow and inefficient. Maybe 1-token/sec.