#osdev on 2021-11-03 — irc logs at libera.irclog.whitequark.org

2021-05-23 01:57 klange changed the topic of #osdev to: Operating System Development || Don't ask to ask---just ask! || For 3+ LoC, use a pastebin (for example https://gist.github.com/) || Stats + Old logs: http://osdev-logs.qzx.com New Logs: https://libera.irclog.whitequark.org/osdev || Visit https://wiki.osdev.org and https://forum.osdev.org || Books: https://wiki.osdev.org/Books

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16:10 <geist> interesting, DDR5 has a local-write style command

16:10 <geist> ie, 'fill these lines with <pattern>'

16:11 <geist> was just reading about it because Alder Lake supports DDR5

16:17 <mxshift> curious if it actually helps with ECC DRAM init and bzero(). People have claimed those are purely bandwidth limited for over 2 decades. Time to see if it's true _and_ using specialized HW primitives is something OS developers are willing to do.

16:23 <geist> yeah

16:23 <geist> according to wikipedia it doesn't actually complete any faster but doesn't involve sending bits across the wire, so from a power point of view its a win

16:27 <mxshift> right, you're not sending a stream of literal zeros

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16:56 <zid> and even if it's not faster now, it might end up faster

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