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Thread: My ARM fleet

  1. #1
    Join Date
    Sep 2010
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    Leiden, the Netherlands
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    My ARM fleet, it ain't no Armada -yet

    My ARM fleet has grown over the years, but is as yet no Armada. What began with a single Raspberry Pi Model B+ and soon grew with Banana Pro and a BeagleBone Black to no less than four running ARM cores, was in the end of the 32-bit era a cluster-like stack of SBCs consisting of Raspberry Pi's 2, 3 and 4 (two examples of each), so 24 cores running, with the afore mentioned Raspberry Pi Model B+, Banana Pro and BeagleBone Black forming the reserve, together with a Cubieboard 4 that went out with a bang! due to overheating -and I still hope to be able to revive it -I hope it was the card or the PSU that went bang!, I can't find anything on the board. I must have a PSU that's able to deliver 5V-4A somewhere....

    Then the Raspberry foundation brought out their 8GB Raspberry Pi 4 Model, together with a 64-bit OS. So I went out and bought one, and I bought a 64-bit Odroid-N2+ as well -after my experiment with a 32-bit Odroid-XU4 went well.

    My 32-bit fleet now consists of two Raspberry Pi 2 Model B, two Raspberry Pi 3 Model B and an Odroid-XU4 (still 24 cores running, but a tad faster) with the Cubieboard 4 (8 cores) still in reserve. In the event the Cubieboard 4 is raised from the grave the Raspberry Pi 2's go to the reserve, as I expect the performance of the Cubieboard 4 to be about the same as that of the Odroid-XU4 -slightly less than four times that of a Raspberry Pi 2, two times that of a Raspberry Pi 3.

    The 64-bit fleet is in the build-up phase and will consist of three Raspberry Pi 4 Model B and two Odroid-N2+ (one with Android, the other with Linux), also 24 cores running.
    Last edited by Dirk Broer; 10-23-2020 at 12:28 PM.

  2. #2
    Join Date
    Sep 2010
    Location
    Leiden, the Netherlands
    Posts
    3,886
    Good news on the 32-bit front: the Cubieboard 4 lives! It is the PSU that died -just as I thought. I was able to flash a new OS to the onboard eMMC by using a USB 3.0 cable between a PC and the Cubieboard. Now to the hunt for a 5V 4A PSU with the right connector -those for e.g. an Odroid-XU4 don't fit, too big, but there might be an adapter. If the Cubie goes up, I'll have 40 32-bit ARM cores up and running! I think I'll try FreeBSD on the two Raspberry PI 2's by that time.

    Less good news on the 64-bit front: Though all my three Raspberry Pi 4's now merrily run Raspberry Pi OS 64-bit and my first Odroid-N2+ 64-bit does the same with Android64 9 PIE, my 2nd Odroid-N2+, the one I meant for Linux, gives big troubles. The HDMI port seems to have a problem, as I only get 'digital signal error' out of it. Going in via SSH -thanks to PuTTy- gives a sluggish, underperforming board, not the blistering fast cruncher I had in mind. So, I have 24 64-bit ARM cores running, but I am not happy with six of those.

    Edit: I don't know what I did -perhaps even nothing and the system just calibrated itself-, but the speed of the N2+ has improved dramatically. WEP M2 went from 7+ hours per WU to less than 2 -and it is not even running at 2400 MHz yet....
    Last edited by Dirk Broer; 10-23-2020 at 03:23 PM.

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