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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Dan Kaminsky‏Verified account @dakami 8 Dec 2017
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      So why *aren't* there small bits of compute baked into RAM yet? Referring to highly local operations with fixed dimensionality, or reducing queries (return or update memory region where following constraint is true). We have TB+ EC2 nodes, after all. Why move the data?

      27 replies 24 retweets 132 likes
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    2. whitequark‏ @whitequark 8 Dec 2017
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      Replying to @dakami @mcclure111

      one reason is the wafers that are good for storage (high gate capacitance) suck for computation, and vice versa

      2 replies 0 retweets 13 likes
    3. Hector Martin‏ @marcan42 8 Dec 2017
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      Replying to @whitequark @dakami @mcclure111

      And this is why eDRAM isn't just "copy and paste a RAM design into the die".

      1 reply 0 retweets 2 likes
    4. Dan Kaminsky‏Verified account @dakami 8 Dec 2017
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      Replying to @marcan42 @whitequark @mcclure111

      eDRAM?

      2 replies 0 retweets 0 likes
      Hector Martin‏ @marcan42 9 Dec 2017
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      Replying to @dakami @whitequark @mcclure111

      DRAM implemented on the same die as the main logic. Also 1T-SRAM (a type of eDRAM). Used in POWER chips for cache, and also game consoles (PS2, Xbox 360, GameCube, Wii, Wii U all had some amount of eDRAM in the GPU, also CPU cache on the Wii U).

      12:23 AM - 9 Dec 2017
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      • whitequark ADoug
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