alt Hacker NewsThis is a 54 minute video. I watched about 3 minutes and it seemed like some potentially interesting info wrapped in useless visuals. I thought about downloading and reading the transcript (that's faster than watching videos), but it seems to me that it's another video that would be much better as a blog post. Could someone summarize in a sentence or two? Yes we know about the refresh interval. What is the bypass?
Update: found the bypass via the youtube blurb: https://github.com/LaurieWired/tailslayer
"Tailslayer is a C++ library that reduces tail latency in RAM reads caused by DRAM refresh stalls.
"It replicates data across multiple, independent DRAM channels with uncorrelated refresh schedules, using (undocumented!) channel scrambling offsets that works on AMD, Intel, and Graviton. Once the request comes in, Tailslayer issues hedged reads across all replicas, allowing the work to be performed on whichever result responds first."
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The video could be a shorter, some of the goofiness might not please the most pressed people but that is also what makes it fresh and stand out.
> using (undocumented!) channel scrambling offsets that works on AMD, Intel, and Graviton
Seems odd to me that all three architectures implement this yet all three leave it undocumented. Is it intended as some sort of debug functionality or what?
As requested:
https://news.ycombinator.com/item?id=47713090
I agree, not everyone has 54 minutes to watch a video full of fluff (I tried, but only got so far, even on 1.5x speed).
Just use the Ask button on YouTube videos to summarize, that's what it's for.
Unnecessarily negative imo.
I like the video because I cant read a blog post in the background while doing other stuff, and I like Gadget Hackwrench narrating semi-obscure CS topics lol
Your comment was several paragraphs, and I am busy so I can't read it all. Can you summarize what you are asking for, I might be able to help later.
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FYI if you have a video you can't be bothered watching but would like to know the details you have 2 options that I use (and others, of course):
1. Throw the video into notebooklm - it gives transcripts of all youtube videos (AFAIK) - go to sources on teh left and press the arrow key. Ask notbookelm to give you a summary, discuss anything etc.
2. Noticed that youtube now has a little Diamond icon and "Ask" next to it between the Share icon and Save icon. This brings up gemini and you can ask questions about the video (it has no internet access). This may be premium only. I still prefer Claude for general queries over Gemini.