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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. Tiago Marques‏ @evrsr 23 Jan 2017
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      @marcan42 Hey, saw your recent PS4 talk. Per core CPU is slow but using 8 cores, how fast is it compiling Gentoo packages? Like glibc?

      1 reply 0 retweets 0 likes
    2. Hector Martin‏ @marcan42 23 Jan 2017
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      Replying to @evrsr

      Still pretty slow. They're Atom-class cores.

      1 reply 0 retweets 1 like
    3. Tiago Marques‏ @evrsr 23 Jan 2017
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      Replying to @marcan42

      I know, just curious. Athlon w/4x Jaguar cores are ok even when hampered on single-channel DDR3-1600. Those have Xeon like bandwidth to RAM.

      1 reply 0 retweets 0 likes
    4. Hector Martin‏ @marcan42 23 Jan 2017
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      Replying to @evrsr

      Dual channel DDR3-1333 would have more memory bandwidth than the PS4 has *for the CPU*. The CPU bus is relatively constrained, vs GPU

      1 reply 0 retweets 2 likes
      Hector Martin‏ @marcan42 23 Jan 2017
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      Replying to @marcan42 @evrsr

      But most compute workloads are not bottlenecked on memory bandwidth anyway, and the PS4 might have higher latency.

      9:43 PM - 23 Jan 2017
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        1. Tiago Marques‏ @evrsr 23 Jan 2017
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          Replying to @marcan42

          Latency for sure and w/ small cache prob hurts. Oh, didn't know it had a separate bus to CPU. Tks for input, very interesting.

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