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pcwalton's profile
Patrick Walton
Patrick Walton
Patrick Walton
@pcwalton

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Patrick Walton

@pcwalton

Research engineer at Mozilla

San Francisco, CA
pcwalton.github.io
Joined November 2009

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    1. Patrick Walton‏ @pcwalton 3 Apr 2018
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      Replying to @antumbral @slightlylate

      NVIDIA Tegra?

      1 reply 0 retweets 0 likes
    2. Katelyn Gadd‏ @antumbral 3 Apr 2018
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      Replying to @pcwalton @slightlylate

      Most of the chatter I saw about Denver from people in the know seemed to suggest it was a well-intentioned but ultimately underperforming and bad experiment

      2 replies 0 retweets 0 likes
    3. Patrick Walton‏ @pcwalton 3 Apr 2018
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      Replying to @antumbral @slightlylate

      Tegra X1 (Switch, SHIELD TV) isn’t Denver.

      2 replies 0 retweets 1 like
    4. Katelyn Gadd‏ @antumbral 3 Apr 2018
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      Replying to @pcwalton @slightlylate

      ah, i thought they shipped it in x1 AND x2! my mistake. I haven't ever had access to an x1 where I can actually run benchmarks... I guess switch jailbreaks are around the corner at least

      2 replies 0 retweets 0 likes
    5. Chad Blaze: Fundraising Edition (OVA)‏ @stdlib 3 Apr 2018
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      Replying to @antumbral @pcwalton @slightlylate

      Denver is also only 2 of the total 6 cores, the rest are standard A57s. but the heterogeneous nature makes the freqs a bit weird; you can just turn off the Denver cores and boost to 2GHz on the A57s though (TX1 could only do ~1.7ghz on the A57s it had)

      1 reply 0 retweets 2 likes
    6. Chad Blaze: Fundraising Edition (OVA)‏ @stdlib 3 Apr 2018
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      Replying to @stdlib @antumbral and

      it also has a decent amount of RAM, bigger bus speeds (vs a TX1) and caches, etc. it's a very, very solid chip in terms of raw horsepower, although my understanding is a lot of switch attacks are in part due to NVidia's Tegra being vulnerable, at the same time.

      1 reply 0 retweets 2 likes
    7. Patrick Walton‏ @pcwalton 3 Apr 2018
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      Replying to @stdlib @antumbral @slightlylate

      Yeah, I admit I haven’t run benchmarks. I guess I just trust NVIDIA to make a good chip, compared to Samsung or especially Qualcomm :)

      1 reply 0 retweets 1 like
    8. Chad Blaze: Fundraising Edition (OVA)‏ @stdlib 3 Apr 2018
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      Replying to @pcwalton @antumbral @slightlylate

      agreed. doubt you can do it on the Shield, but my TX2 is also equipped with a full-speed SATA drive (I could even do NVMe at ~full speed), so in practice it absolutely smokes everything else in a comparable TDP/form factor, ignoring the GPU entirely

      1 reply 0 retweets 1 like
    9. Katelyn Gadd‏ @antumbral 3 Apr 2018
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      Replying to @stdlib @pcwalton @slightlylate

      wow, fast storage is definitely a big one for me. storage is so slow on the typical android handset...

      1 reply 0 retweets 1 like
    10. Alex Russell‏ @slightlylate 3 Apr 2018
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      Replying to @antumbral @stdlib @pcwalton

      if this is the right set of specs, then I'd expect it to smoke everything else I've seen in handsets (short of Apple's bonkers parts). 2MB of L2:https://www.nvidia.com/en-us/autonomous-machines/embedded-systems-dev-kits-modules/ …

      2 replies 0 retweets 0 likes
      Patrick Walton‏ @pcwalton 4 Apr 2018
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      Replying to @slightlylate @antumbral @stdlib

      Update: I checked on my rooted SHIELD TV and it doesn’t tell me the cache size, either in cpuinfo or /sys. Typical NVIDIA. I’m too lazy to write a kernel module to read the cache size registers :)

      9:47 AM - 4 Apr 2018 from Civic Center Tenderloin, San Francisco
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