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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. Hector Martin‏ @marcan42 1 Jun 2015
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      Working on an OpenCL version of waifu2x: https://github.com/marcan/cl-waifu2x … (not even remotely complete yet, please don't judge its performance!)

      3 replies 9 retweets 8 likes
    2. niklas‏ @drdaxxy 1 Jun 2015
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      Replying to @marcan42

      @marcan42 610k pixels/sec on a larger image with a larger (256x256) work size

      1 reply 0 retweets 0 likes
    3. niklas‏ @drdaxxy 1 Jun 2015
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      Replying to @drdaxxy

      @marcan42 ...though that reading is probably inaccurate, as execution time only decreased to 1/3 of 64x64

      1 reply 0 retweets 0 likes
    4. Hector Martin‏ @marcan42 1 Jun 2015
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      Replying to @drdaxxy

      @DrDaxxy Well, you *are* comparing a newer desktop GPU with an older mobile GPU :-)

      1 reply 0 retweets 0 likes
    5. Hector Martin‏ @marcan42 1 Jun 2015
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      Replying to @marcan42

      @DrDaxxy Since the kernel is pretty unoptimized, it's also probably vastly more sensitive to architectural differences.

      2 replies 0 retweets 0 likes
    6. Hector Martin‏ @marcan42 1 Jun 2015
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      Replying to @marcan42

      @DrDaxxy E.g. I'm pretty sure the bottleneck here is __global memory accesses, since I'm (dumbly) reading the same data 128 times.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 1 Jun 2015
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      @DrDaxxy Next step is to figure out how to load the data once into __local memory and work there. Need to figure out workgroup partitioning.

      10:21 AM - 1 Jun 2015
      0 replies 0 retweets 0 likes

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