Turing Pi 2

Infrastructure

arm cluster hardware

SHOW HN2020

109points
71comments
#594of 3,028 in 2020
Top 20%of 2020 by points

How HN took it

MixedNo clear lean

7 positive, 25 neutral or asking, 2 mixed, 18 critical, out of 52 comments about the project. Thread score -0.18.

Idea: 4 for, 7 againstDesign: 2 for, 6 againstPricing: 0 for, 4 againstPerformance: 1 for, 1 against

The thread, comment by comment

Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.

positive neutral or mixed critical about another commenter or something else the maker

What HN said

What people liked

  • Compact cluster form factor and upgrade path from V1 are appealing

    From 2 comments
    • I spent a bit of time testing the v1 board, and while it isn't without fault, it's the best SBC-based cluster project I've used (haven't personally tested the SOPINE Clusterboard…
      geerlingguy on HN
    • IT's amazing device! For now i'm running a few RPi devices and i was dream about such device to put them in for more processing power.
      mobilio on HN
  • Useful for testing and CI on ARM

    From 2 comments
    • I use mine to host some non-revenue-generating websites (they are super cheap for that purpose), and also for some ARM image builds that I integrate into my Docker/Kubernetes…
      geerlingguy on HN
    • >>Besides academic uses to perhaps teach distributed systems on these are there any real world use cases for these clusters? A considerable amount of people is already assembling…
      barumi on HN

Objections

  • Cost is high compared with x86 hardware or a used laptop

    From 3 comments
    • ThinkPad W530 fits the bill quite well. Broken screen puts it at around $100-150, $300 gets you fully working one. Less tyhan 4 CM4 modules, and what about Turing Pi 2 case?…
      rasz on HN
    • i often see people claim raspberry pi cheap but in reality it's not. a cluster like this is probably not cheap and performance wise, it's slower than, say an AMD x86 system.
      tuananh on HN
    • Yes, but I would opt for the newly released HC4 if two drives were fine. If you are looking for four to five drives, I'm sure someone will make a PCB at some point that uses A…
      InvaderFizz on HN
  • Unclear practical use case beyond teaching

    From 3 comments
    • Besides academic uses to perhaps teach distributed systems on these are there any real world use cases for these clusters?
      dogma1138 on HN
    • Outside of doing it for the heck of it (which is a valid enough use case , IMHO), what practical use do you see out of this ? To me, it looks like I can do all of the same things…
      draklor40 on HN
    • Main use case might be doing whatever you would do on 10 year old laptop reused to be your home server. Similar performance, similar power usage.
      rasz on HN
  • Shared SATA and PCIe limited to two slots; no redundant power

    From 3 comments
    • Theoretically yes, but there seem to be only 2 PCIe (and probably x1 slots). And the interconnect will be quite slower (I suspect) btw. the modules. All those GPIO pins are gonna…
      draklor40 on HN
    • There is nothing in the schematics about multiple power supplies or battery backups, etc. If you are hooking up all 4 rpis to the same power source , might as well replace it…
      draklor40 on HN
    • But like, how? Mounting a volume in read/write mode on more than one machine is obviously going to corrupt it
      anaisbetts on HN
  • 32GB RAM claim is misleading since each CM4 has up to 8GB

    From 3 comments
    • I don’t understand the claim about 32GB RAM. The diagram shows slots for four RPi compute modules, each of which has 1GB RAM.
      billsmithaustin on HN
    • The new compute modules comes with up to 8 Gb of RAM. Here is a detailed review of new CMs https://www.jeffgeerling.com/blog/2020/raspberry-pi-compute-module-4-review
      nsky-world on HN
    • Reading https://turingpi.com/turing-pi-2-announcement/, they have designed a “Raspberry Pi 4 Compute Module (CM4)” with 8GB RAM.…
      Someone on HN

Requests

  • Rack mount case

    From 2 comments
  • PCIe switching

    From 2 comments
    • PCIe switching would have been really interesting to see, even in a non-concurrent mode. One also desperately wishes that multi-host network adapters had a low-end market. A 1 x…
      rektide on HN
    • PCIe switching sounds nice, but let me tell you that it is a terrible nightmare on every level. Hardware: these PCIe switches are finicky as all get out; will it link up to your…
      jackyinger on HN
  • Mixed CPU architectures in one box

    From 1 comment
    • Long term request for the next Turing ( mixed CPU cards together - in a Box! ) + ARM cards + X86 cards + RISC-V cards
      pella on HN

Questions

  • What is the price?

    From 2 comments
  • How does shared SATA work across nodes?

    From 2 comments
    • Stupid question, how do these 4 SoCs share the 2x SATA ports? Do you assign them to a specific processor somehow? Are the other machines booting off of PXE boot?
      anaisbetts on HN
    • But like, how? Mounting a volume in read/write mode on more than one machine is obviously going to corrupt it
      anaisbetts on HN
  • Does the CM4 firmware support PXE boot?

    From 1 comment
    • Out of curiosity, does the firmware in the Compute Module allow for PXE boot? Would be a neat way to handle corruptions of the SD / eMMC. Flick the power off through the Turing…
      capt_hotpants on HN

Alternatives named

  • Used x86 laptops or mini PCs with VMs

    From 3 comments
    • Main use case might be doing whatever you would do on 10 year old laptop reused to be your home server. Similar performance, similar power usage.
      rasz on HN
    • You could get an off-the-shelf x86 machine in the same form factor and run the cluster nodes in VMs, for instance. Maybe you could argue that four RPis on a network are more…
      ianhowson on HN
    • ThinkPad W530 fits the bill quite well. Broken screen puts it at around $100-150, $300 gets you fully working one. Less tyhan 4 CM4 modules, and what about Turing Pi 2 case?…
      rasz on HN
  • Raspberry Pi with the Pi Dramble cluster

    From 1 comment
    • I spent a bit of time testing the v1 board, and while it isn't without fault, it's the best SBC-based cluster project I've used (haven't personally tested the SOPINE Clusterboard…
      geerlingguy on HN
  • AWS Graviton ARM instances

    From 1 comment
    • Today we are thrilled to announce the Turing Pi V2. The Turing Pi V2 is s compact cluster in a mini ITX form factor with 4 x cluster nodes, 2x mini PCIe (Gen 2) ports, 2x SATA…
      nsky-world on HN

Category, keywords, summaries and labels on this page were made by AI (Thread Reader v2) and not checked by hand. Each point links to the comments it came from.

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