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matt-p

HN member
Joined
Wed, Dec 18, 2019, 12:43 PM UTC
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1,305
Public activity
827 items

About matt-p

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Recent public activity

  1. comment
    Comment #49250958

    I'm not saying this is bad, or any worse than other marketplaces, but essentially a direct contract would typically have these 'protections' too. How do you enforce 'you can get a …

  2. comment
    Comment #49250615

    Yep, so basically the buyer has to trust the seller is honest and/or doesn't make a mistake (uploading the data for the wrong GPUs or something).

  3. comment
    Comment #49249929

    This is super cool! I agree the non-fungible nature of a H100 (or whatever) is a massive challenge. How do you actually verify usage/thermal history on these? Hours run and thermal…

  4. comment
    Comment #49157940

    Nothing, except that it's expensive to do on the carrier side and completely unsupported on any cheap CPE I know of. Aside from that is not a terrible idea, aside from being over e…

  5. comment
    Comment #49111890

    Cool work!

  6. comment
    Comment #49057244

    Yeah I agree, I understand a weekly reset in some cases could be over the top but if they did a 5-hour reset and took 20% off your weekly usage that would offset the additional cos…

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  8. comment
    Comment #48772213

    Rural is complicated. You have more distance between subscribers, but it's much more likely to just be grass which you can mole plough into for about a tenth of the cost per metre …

  9. comment
    Comment #48772126

    So why don't you have ISPs that focus on one state or one geographical area. We have that all over in Europe.

  10. comment
    Comment #48692180

    Yes very true, 2X is with the most modern 10G chipsets only.

  11. comment
    Comment #48692154

    I kind of a agree, but it's not going to happen for a long long time. The practicalities are just a nightmare. How do I power an access point with fiber? Ok we add an AC wall socke…

  12. comment
    Comment #48685788

    M3 ultra is obviously 1-2 generations behind and new the studio is expected 'any day now. Even if this was M4 Ultra it would still be ~comparable to any EPYC system in bandwidth, b…

  13. comment
    Comment #48685305

    I agree, but maybe not all slots need to be filled with blanks, maybe leaving one or two truly empty slots is OK.

  14. comment
    Comment #48685231

    Yeah kind of, I think a 24 channels DDR5 works out approx 1TB/s, but the cost is astronomical, a M5 studio would probably beat that performance for around half the cost. You also g…

  15. comment
    Comment #48684855

    A very good idea, the Mac Pro also had a rack mount option didn't it? That would be the kind of thing you could sell as many as you could make.

  16. comment
    Comment #48684840

    I don't think it's needs 'call us' just a separate SKU, I mean if they called it Xserve Ultra and it was just a studio in a 1u format with dual PSUs and extra RAM, it would fly off…

  17. comment
    Comment #48684748

    It uses 128b/132b encoding so 10Gb/s USB ≈ 9.69Gb/s you do then have USB framing overhead but it's probably around 2% on typical 1500B ethernet frames. So all in you are losing pro…

  18. comment
    Comment #48671589

    You would use a heat exchanger normally anyway. Forcing the outside (DH) to be slow would get you that, but there is cost in having low flow in that HXs are less efficient at the f…

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  20. comment
    Comment #48671365

    Yeah, I mean it does depend on the pipework and season/geography for sure. I was simplifying a bit in that a part of the 'distribution' losses are in the plate heat exchanger as yo…

  21. comment
    Comment #48667980

    Definitely!

  22. comment
    Comment #48667962

    In essence you can't really because slower flow rate makes the heat transfer less efficient. You'd be halfing the flow rate in that example.

  23. comment
    Comment #48666539

    are you manually maintaining the list of 'OSA censored' sites? Sounds great, just I'm lazy :')

  24. comment
    Comment #48666454

    Yes, but the heat will still likely need boosting by about a further 10 degrees either at the source or end user. DC inlet is 45°C, outlet is 55°C assuming a 10°C ΔT. By the time t…

  25. comment
    Comment #48666085

    Yeah, this is part of the issue to be honest. You'd need outdoor air to be below ~37°C to guarantee 45°C water outlet temperature. In most locations you still need cooling towers o…