Tuesday, May 12


Daily News Stuff 12 May 2020

Absolutely Nothing Edition

Tech News

  • Absolutely nothing.

  • The Ryzen 4700G has poked its nose above the waterline.  (Tom's Hardware)

    It looks like a fully-configured Ryzen 4000 APU - 8 cores, 8 CUs, 8MB cache.  With a desktop TDP and fast RAM it should be a pretty solid workhorse.  It probably only supports PCIe 3.0, but has the same lane configuration as existing dekstop Ryzens so that's not a huge drawback.

  • The 4900U has also been spotted in benchmark results unless that was swamp gas reflecting off the surface of Venus.  (WCCFTech)

    It's a very minor tweak to the 4800U, though.

  • Meanwhile the Core i9-10900K uses 235W at 4.8GHz and is hot enough to boil molasses in January, as the kids say.  (WCCFTech)

    Using a 240mm all-in-one water cooler it ran at an average temperature of 87C under load.  Higher clock speeds are temperature-controlled - it has to be running at 70C or lower to hit top speed - so that gives you an idea of what you'll need in the way of cooling.

    Liquid nitrogen it is then.

  • I got LXD virtual machines (as opposed to containers) working on Akane III.  It's completely painless to start a virtual machine under LXD 4.0 - you just use the same launch command as you would with a container and add --vm.

    Few differences: By default containers give you full access to the system's resources - though not control over them - and you can set limits on CPU, memory, and disk for individual containers or create profiles to apply the same limits across multiple containers.  And you can change all the settings live.

    Virtual machines start by default with one core, 1GB RAM, and 2GB of disk.  And a very stripped down version of Linux with broken networking.  Which means that you can't install new packages because it can't reach the server where the packages live.

    What I found today was the right sequence of commands with what is available in the minimal install to get networking working:
    ip addr add dev enp5s0
    ip link set enp5s0 up
    ip route add default via dev enp5s0
    echo "nameserver" > /etc/resolv.conf
    None of which will survive a reboot, though you can just stick it in /etc/rc.local as a quick fix.

    I'm not sure which of the three or four network configuration tools is supposed to be active, but none of them actually are, so it probably doesn't matter a whole lot.

    I managed to reconfigure the memory and CPU settings; apart from requiring a reboot that works exactly the same as with containers.  Increasing the disk space, however, didn't work at all.  I suspect that has to be done when you create the VM.

    I plan to run a speed comparison with my Python benchmark to compare running directly on the OS with running in a container (which should perform basically the same) with running in a full virtual machine (which anecdotally can be significantly slower) with running in a container inside a virtual machine.

    That last because it would be the easiest way to migrate this server - the one hosting this blog.  In fact, it is how this server is running right now, though with older virtualisation and container software.

    The new CPU is about 70% faster, and I'd like to see if the new software is also faster.

Anime Music Video of the Day

Chaosprojects hits it out of the park again.

Disclaimer:1200 games in my Steam library and I'm playing Faerie Solitaire Remastered.  They did a pretty good job with the update though.

Posted by: Pixy Misa at 05:19 PM | Comments (3) | Add Comment | Trackbacks (Suck)
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1 How all-out is the Aida64 stress test?  Are we talking Prime95-level power virus?  If not, that could mean regular application processing won't hit those temps.
It's kind of annoying that they're die-harvesting so you can only likely get the best overclocking headroom with the 10 core parts.

Posted by: Rick C at Wednesday, May 13 2020 12:32 AM (Iwkd4)

2 Yeah, 10 cores at 4.8GHz is not so bad - except for the 235W bit.  If a 125W part is using 235W sustained, the TDP numbers are useless.

Posted by: Pixy Misa at Wednesday, May 13 2020 02:00 AM (PiXy!)

3 The 3950X running in eco mode at 65W has a base clock of 3.0GHz - on all 16 cores - so it delivers roughly the same multi-threaded performance as an i9-10900 at 235W.

Posted by: Pixy Misa at Thursday, May 14 2020 05:15 PM (PiXy!)

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

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