Wednesday, March 04

Geek

Daily News Stuff 4 March 2020

Alligator Gumbo Edition

Tech News

  • 80 is the new 64.  (AnandTech)

    Ampere's Altra is an 80 core Arm server processor, based on the N1 core design, which is in turn based on the A76.  Like AMD's Epyc processors it supports eight channels of DDR4 RAM and 128 lanes of PCIe 4.0.  Unlike the Epyc it's all on a single chip - possible because it only has 32MB of cache compared to 256MB on the high-end Epyc parts.

    Performance is, best case, sort of on par with the Epyc.  That's if you're running integer-only code that isn't too cache-sensitive, and you're using GCC.  But given that the 64-core Epyc and Threadripper arethe world's fastest CPUs, even matching them on some tasks is no small achievement.

    It uses 210W, so unlikely to show up in your next mobile phone.


  • Cypress is sampling USB4 controllers ahead of volume shipment in Q3.  (AnandTech)

    Exactly what parts of USB4 they support is another question, because USB4 is basically a merger of USB 3.2 and Thunderbolt 3, with the added option of USB at 40Gbps as well as PCIe.  But there will of course be USB 4 Gen 1, USB 4 Gen 2, USB 4 Gen 2x2, and so ad infinitum.


  • How did software get so reliable without proof?  (Surfing Complexity)

    Correctness proofs are the Holy Grail of computer science, but like the Holy Grail they don't get used a whole lot.  Nevertheless, software systems of astonding complexity actually work.

    Partly because we learn what breaks them and refrain from doing that.

    In the case of Ethereum, this includes using it for any purpose at all.



Disclaimer: Objects in the mirror are behind you.

Posted by: Pixy Misa at 11:25 PM | Comments (3) | Add Comment | Trackbacks (Suck)
Post contains 383 words, total size 3 kb.

1 Be forewarned: I do not use CAA records in my DNS setup, and still got the email from Let's Encrypt about my certs being affected. So also did my day job, which is in the same boat.

Posted by: Jay at Thursday, March 05 2020 12:27 AM (mrlXS)

2 Joy.  I only have about 30,000 domains I need to keep an eye on...

Posted by: Pixy Misa at Thursday, March 05 2020 10:38 AM (PiXy!)

3 Someone has made a tool for mass-checking your sites, that downloads the key signatures from LetsEncrypt:

https://github.com/hannob/lecaa

-j

Posted by: J Greely at Thursday, March 05 2020 12:44 PM (LGSd2)

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Apple pies are delicious. But never mind apple pies. What colour is a green orange?




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